The key feature of green laser pointer contains the important parameters of green laser pointer . Many different types of resistance welding, can be classified according to the form of lap joints and butt resistance welding resistance welding two. Combination of process methods, can be divided into lap resistance welding, spot welding, seam welding and projection welding of three, resistance butt welding and resistance welding are generally two kinds of flash butt welding. Shown in Figure 3, when the laser power density to the metal surface is greater than 1000000W/cm2, the metal surface temperature in a very short period of time (1 / 1000000 ~ 1/100000s) increased to above the boiling point and melting point metal to melting and vaporization, the formation of liquid metal and metal vapor, metal vapor can produce enough pressure to overcome the surface tension of liquid metal and gravity, which arranged part of the liquid metal, the laser irradiation of the pool concave, forming holes. Holes in the bottom of the laser beam to heat the metal liquefaction and vaporization, the resulting metal vapor continues to oppress the Bottom of the liquid metal and make it exclusive to the pool four weeks (or overflow), so that the hole deepened, the process is continuous and proceed, in the liquid metal to form an elongated hole. The payment method of led flash light can use the credit card.
When the laser beam generated in the holes of the metal vapor pressure and liquid metal equilibrium surface tension and gravity, not to deepen the hole to form a stable depth of the hole, which is the hole effect. When the forward movement of the laser beam to form a stable hole is forward movement, the hole in front of the constantly melting and vaporization of metal, molten metal flows to the rear hole, and with the liquid metal surface tension and gravity to close, the formation of solidification weld. Compared with the resistance welding, laser welding have a greater advantage: single-sided welding. Double-sided sheet is generally spot welding, welding flanges need to reserve sufficient, and to both sides of flange welding torch can be achieved. Laser welding of the flange side just welding, the welding can greatly reduce the reserve flange, these materials can make the entire body to reduce weight and make the design more flexible body. Distorted. Compared with spot welding, laser welding of hot deformation zone is very narrow. Because it is a non-contact process, so the mechanical distortion associated with welding and the edge waves in the laser welding does not produce. At the same time, this non-contact feature also eliminates the high frequency of wearing parts and maintenance parts, such as the electrode cap, electrode rods and cables. The green laser pointer has the various and powerful functions.
Welding speed and welding strength. One of the main advantages of laser welding is the welding speed it can reach 5m/min, while producing very little heat distortion, but also for the neighboring metal without mechanical distortion, and the welding of high strength, can greatly improve the body's strength and stiffness.
Wednesday, May 23, 2012
The quality of welding of stainless steel involves the appearance of quality
the quality of welding of stainless steel involves the appearance of quality and ease of assembly assembly, therefore, the production process welding process in the four play the role of nexus. The payment of led flash light should be finished on line.
During drawing deformation calculations, we can ignore the effects of forming the bottom of flat-shaped parts directly from the calculation. The calculation shows, the piece can be a drawing shape. Such as drawing punch and die shape parts made by the top four with oblique deformation in the drawing to the workpiece before the end of the top shape. So the pieces can be combined deep drawing and forming the top in a process to complete. Welding is the use of the substance of local heating or pressure, or both at the same time pressure in the heating means, so that the metal is melted or connections into the plastic state, contributed to the metal atoms are connected at the mutual penetration and close to 0.3 to 0.5 nm from the metal lattice, take full advantage of the binding force between the metal atoms into two separate pieces of metal plate connected. In the welding process, the local metal is heated to above the melting temperature, then cooling and crystallization, in this process will occur to varying degrees various metallurgical phenomena and heat treatment process, the complex deformation and stress occur also in the process, so welding process is not just an assembly, or a complex metallurgy, heat treatment and welding deformation and stress generated by the process. The customer should complete the payment of green laser pointer according to the stipulation described in the note.
At present, the welding methods used in stainless steel boxes there are many, are presented today the most widely used resistance welding process, and has wide application prospect of laser welding process. Also known as contact welding resistance welding is the most widely used manufacturing process of welding. Shown in Figure 2, the workpiece between two electrodes placed in pressure and welding current through the use of current through the resistance of the workpiece itself, the heat generated to heat the formation of partial melting, cooling off in the formed under pressure to a solid joint, such as resistance welding process. Thus, resistance welding has the following characteristics: the use of welding current through the resistance of the workpiece and the heat generated by the heating of the workpiece. Heat from the workpiece that is not outside, but internal heat source. The welding process is completed under pressure, that pressure must be applied. Without any increase in the weld filler material, but also without any protective agent. The general specification of green laser pointer is included in the manual.
During drawing deformation calculations, we can ignore the effects of forming the bottom of flat-shaped parts directly from the calculation. The calculation shows, the piece can be a drawing shape. Such as drawing punch and die shape parts made by the top four with oblique deformation in the drawing to the workpiece before the end of the top shape. So the pieces can be combined deep drawing and forming the top in a process to complete. Welding is the use of the substance of local heating or pressure, or both at the same time pressure in the heating means, so that the metal is melted or connections into the plastic state, contributed to the metal atoms are connected at the mutual penetration and close to 0.3 to 0.5 nm from the metal lattice, take full advantage of the binding force between the metal atoms into two separate pieces of metal plate connected. In the welding process, the local metal is heated to above the melting temperature, then cooling and crystallization, in this process will occur to varying degrees various metallurgical phenomena and heat treatment process, the complex deformation and stress occur also in the process, so welding process is not just an assembly, or a complex metallurgy, heat treatment and welding deformation and stress generated by the process. The customer should complete the payment of green laser pointer according to the stipulation described in the note.
At present, the welding methods used in stainless steel boxes there are many, are presented today the most widely used resistance welding process, and has wide application prospect of laser welding process. Also known as contact welding resistance welding is the most widely used manufacturing process of welding. Shown in Figure 2, the workpiece between two electrodes placed in pressure and welding current through the use of current through the resistance of the workpiece itself, the heat generated to heat the formation of partial melting, cooling off in the formed under pressure to a solid joint, such as resistance welding process. Thus, resistance welding has the following characteristics: the use of welding current through the resistance of the workpiece and the heat generated by the heating of the workpiece. Heat from the workpiece that is not outside, but internal heat source. The welding process is completed under pressure, that pressure must be applied. Without any increase in the weld filler material, but also without any protective agent. The general specification of green laser pointer is included in the manual.
Led flash light can effectively manipulate the turning over of the multimedia
The user should simply press the pageup button of green laser pointer to turn over the page.
Blue spark method: remove the nozzle, blowing air, the pulse laser in a stainless steel plate, so that the cutting head from the top down movement, until the blue spark at maximum focus. For the light path of the cutting machine, the beam divergence angle, cutting the length of the proximal and distal processes of different time, pre-focused beam size there are some differences. Larger the diameter of the incident light beam, the smaller the focal spot diameter. In order to reduce the beam size before the change in focus brought about changes in the focus spot size, domestic and foreign manufacturers of laser cutting system provides a number of special devices for users to choose: collimator. This is a commonly used method, namely CO2 laser output plus an expanded beam collimator for processing, after the beam expander larger beam diameter, divergence angle becomes smaller, so that within the scope of work in cutting the proximal and distal focused beam size close to the front line. Increase in the cutting head of an independent movement under the lens axis, it nozzles to the surface and control the distance (stand off) the Z-axis are two independent parts. When moving the machine table or moving the optical axis, the beam axis from proximal to distal F also move, so after focusing the beam spot diameter is consistent throughout the processing area. led flash light can effectively manipulate the turning over of the multimedia.
Obviously, compared with inert gas, the use of oxygen as an aid to get a higher gas cutting speeds. Has two sources of heat in the oxidation of molten cutting process, if the oxygen burning faster than the laser beam speed, kerf width and rough look. If the speed of the laser beam moves faster than the combustion of oxygen, the resulting narrow kerf and smooth. For easy heat damage to the brittle material, heated by the laser beam for high-speed, controlled cut-off, called the control fracture cutting. This cutting process is the main content: the laser beam to heat a small area of brittle materials, causing a large thermal gradient in the region and severe mechanical deformation, leading to the formation of cracks in materials. As long as a balanced heat gradient, the laser beam can be guided cracks produced in any desired direction. It should be noted that this control is not suitable for cutting acute fracture and cutting edge kerf angle. Closed form is not easy to cut big success. Control fracture cutting speed, does not require high power, otherwise it will cause surface melting, destruction kerf edge. The main control parameter is the laser power and spot size. This kind of green laser pointer is very electricity-saving.
Control focusing mirror (usually metal reflector focusing system) pressure. If the focused beam size before leaving the smaller focus spot diameter becomes larger, the automatic control of pressure to change the focus of curvature smaller focal spot diameter. Flying optics cutting machine by x, y direction of the optical system of compensation. That is, when cutting a remote optical path increases to compensate for optical path shortened; the other hand when cutting near the optical path is reduced, the optical path to increase compensation in order to maintain the same optical path length. Any kind of thermal cutting technology, except for a few cases can be started from the edge of the board, in general, must wear a hole in the board. Compound earlier in the laser punching machine is the first out of a hole punch, and then use the laser from the hole to start cutting. green laser pointer with remote control is composed of a emitter, a receiver and a USB port.
Blue spark method: remove the nozzle, blowing air, the pulse laser in a stainless steel plate, so that the cutting head from the top down movement, until the blue spark at maximum focus. For the light path of the cutting machine, the beam divergence angle, cutting the length of the proximal and distal processes of different time, pre-focused beam size there are some differences. Larger the diameter of the incident light beam, the smaller the focal spot diameter. In order to reduce the beam size before the change in focus brought about changes in the focus spot size, domestic and foreign manufacturers of laser cutting system provides a number of special devices for users to choose: collimator. This is a commonly used method, namely CO2 laser output plus an expanded beam collimator for processing, after the beam expander larger beam diameter, divergence angle becomes smaller, so that within the scope of work in cutting the proximal and distal focused beam size close to the front line. Increase in the cutting head of an independent movement under the lens axis, it nozzles to the surface and control the distance (stand off) the Z-axis are two independent parts. When moving the machine table or moving the optical axis, the beam axis from proximal to distal F also move, so after focusing the beam spot diameter is consistent throughout the processing area. led flash light can effectively manipulate the turning over of the multimedia.
Obviously, compared with inert gas, the use of oxygen as an aid to get a higher gas cutting speeds. Has two sources of heat in the oxidation of molten cutting process, if the oxygen burning faster than the laser beam speed, kerf width and rough look. If the speed of the laser beam moves faster than the combustion of oxygen, the resulting narrow kerf and smooth. For easy heat damage to the brittle material, heated by the laser beam for high-speed, controlled cut-off, called the control fracture cutting. This cutting process is the main content: the laser beam to heat a small area of brittle materials, causing a large thermal gradient in the region and severe mechanical deformation, leading to the formation of cracks in materials. As long as a balanced heat gradient, the laser beam can be guided cracks produced in any desired direction. It should be noted that this control is not suitable for cutting acute fracture and cutting edge kerf angle. Closed form is not easy to cut big success. Control fracture cutting speed, does not require high power, otherwise it will cause surface melting, destruction kerf edge. The main control parameter is the laser power and spot size. This kind of green laser pointer is very electricity-saving.
Control focusing mirror (usually metal reflector focusing system) pressure. If the focused beam size before leaving the smaller focus spot diameter becomes larger, the automatic control of pressure to change the focus of curvature smaller focal spot diameter. Flying optics cutting machine by x, y direction of the optical system of compensation. That is, when cutting a remote optical path increases to compensate for optical path shortened; the other hand when cutting near the optical path is reduced, the optical path to increase compensation in order to maintain the same optical path length. Any kind of thermal cutting technology, except for a few cases can be started from the edge of the board, in general, must wear a hole in the board. Compound earlier in the laser punching machine is the first out of a hole punch, and then use the laser from the hole to start cutting. green laser pointer with remote control is composed of a emitter, a receiver and a USB port.
The normal operation of led flash light should be ensured at first
Processing of small parts of the electrode should be fabricated on the same machine tool Taipower, otherwise the connection and installation of the electrode is difficult to process the error is less than 100μm in diameter micro-hole. If the micro-EDM process on the electrode or ultrasonic machining tools, can be processed out of 5 ~ 10μm micro-holes. Micro-EDM and micro-machining material removal rates, although lower than, but the process can be even smaller size, higher aspect ratio holes up to 5 to 10, especially for fine processing of more complex the superior concave cavity of. Laser processing for re-manufacturing and applied to other manufacturing industries, has its irreplaceable advantages, and better than other processing techniques. The charger of battery of green laser pointer can be bought easily in the ordinary store.
Laser processing for re-manufacturing is the development of the laser transformation hardening and laser cladding surface alloying by laser alloy coating to the composite coating and the development of ceramic coating, which makes the laser surface processing technology into a remanufacturing important tool. It is mainly used 5KW ~ 10KWCO2 high-power lasers and systems. Laser processing system with the international comparison, the gap between China's laser processing systems is very large, accounting for only about 4% of global sales. Mainly as follows: high-end laser processing system, little or nothing; the main laser, but off; fine laser processing equipment, a larger gap. These areas of production and processing enterprises in China are steadily accumulating strength to enter the domestic market has ample room for the application. Predict the next 2-3 years, our sales will be determined by the laser processing of 3.5 billion yuan in 2008 increased to double, that will reach 70 billion yuan output value. Received various types of domestic manufacturing of laser processing technology, which enable them to increase the technological content of products, speed up product upgrading to meet the 21st century high-tech industry, to meet the needs of macro-and micro-manufacturing, research and development of high performance light source is imperative. The normal operation of led flash light should be ensured at first.
Is now actively developing extreme ultraviolet, ultra-short pulse, ultra-high power, high beam quality and other characteristics of the laser, in particular, to adapt to the requirements of micro-manufacturing technology is well-focused laser light source, and has formed an international competition. It can also be micro stepped shaft machining, the minimum diameter of 30μm, processing of the keyway section of 10μm × 10μm. Processing of small parts of the electrode should be fabricated on the same machine tool Taipower, otherwise the connection and installation of the electrode is difficult to process the error is less than 100μm in diameter micro-hole. If the micro-EDM process on the electrode or ultrasonic machining tools, can be processed out of 5 ~ 10μm micro-holes. Micro-EDM and micro-machining material removal rates, although lower than, but the process can be even smaller size, higher aspect ratio holes up to 5 to 10, especially for fine processing of more complex the superior concave cavity of. The availability of the improved design of green laser pointer should be determined soon.
Micro-laser processing equipment, a larger gap; and these areas of production and processing enterprises in China are steadily accumulating strength to enter the domestic market has ample room for the application.
Laser processing for re-manufacturing is the development of the laser transformation hardening and laser cladding surface alloying by laser alloy coating to the composite coating and the development of ceramic coating, which makes the laser surface processing technology into a remanufacturing important tool. It is mainly used 5KW ~ 10KWCO2 high-power lasers and systems. Laser processing system with the international comparison, the gap between China's laser processing systems is very large, accounting for only about 4% of global sales. Mainly as follows: high-end laser processing system, little or nothing; the main laser, but off; fine laser processing equipment, a larger gap. These areas of production and processing enterprises in China are steadily accumulating strength to enter the domestic market has ample room for the application. Predict the next 2-3 years, our sales will be determined by the laser processing of 3.5 billion yuan in 2008 increased to double, that will reach 70 billion yuan output value. Received various types of domestic manufacturing of laser processing technology, which enable them to increase the technological content of products, speed up product upgrading to meet the 21st century high-tech industry, to meet the needs of macro-and micro-manufacturing, research and development of high performance light source is imperative. The normal operation of led flash light should be ensured at first.
Is now actively developing extreme ultraviolet, ultra-short pulse, ultra-high power, high beam quality and other characteristics of the laser, in particular, to adapt to the requirements of micro-manufacturing technology is well-focused laser light source, and has formed an international competition. It can also be micro stepped shaft machining, the minimum diameter of 30μm, processing of the keyway section of 10μm × 10μm. Processing of small parts of the electrode should be fabricated on the same machine tool Taipower, otherwise the connection and installation of the electrode is difficult to process the error is less than 100μm in diameter micro-hole. If the micro-EDM process on the electrode or ultrasonic machining tools, can be processed out of 5 ~ 10μm micro-holes. Micro-EDM and micro-machining material removal rates, although lower than, but the process can be even smaller size, higher aspect ratio holes up to 5 to 10, especially for fine processing of more complex the superior concave cavity of. The availability of the improved design of green laser pointer should be determined soon.
Micro-laser processing equipment, a larger gap; and these areas of production and processing enterprises in China are steadily accumulating strength to enter the domestic market has ample room for the application.
The ventilated condition of the warehouse of green laser pointer
Plastic optical fiber is very soft and can be bent, the processing is also very convenient, so in optical information processing, optical metrology, short-distance transmission, etc. have been better applied. In this experiment, the use of low-loss transmission fiber is imported plastic optical fiber, the fiber diameter, it is 1mm, the core diameter of 990μm, thin thickness of 5μm. Figure 1 shows an audio signal optical transmission system structure diagram, in which electro-optical conversion and analog channels for the transmission between the optical fiber; electro-optical conversion of part of the optical signal before sending part, mainly by the modulation circuit, drive circuit and composed of light-emitting diode LED ; analog channels after the part optical signal receiving part, mainly by silicon photovoltaic cells, pre-amplifier circuit and the circuit. The factory is working on the new revision of working instruction of green laser pointer.
Background noise filtering technology issues, if the use of narrow-band optical filtering techniques, but also there is the laser frequency stability of technical problems. Understand the basic structure of electro-optic modulator; familiar with the basic principles of laser atmospheric communication; master audio signal of the laser atmospheric communication debugging techniques; explore the impact of the effect of laser atmospheric communication factors. Adjust electro-optic modulators, modulator rotation, changes in the amplitude of the carrier signal, waveform, frequency changes, only a suitable place in a maximum amplitude, frequency signal generated. Laser atmospheric communication experiment, the rotating analyzer, oscilloscope waveform amplitude changes on the speaker sound will be smaller, rotating modulator, wave size and frequency of the sound changes. The equipment of manufacturing green laser pointer needs to be maintained.
Integrated with DWDM equipment. Rapid service provisioning. Rapid atmospheric laser communication network construction, simple operation, flexibility, strong, temporary emergency situations can be opened for quick service. Other special occasions. As the laser communication system both atmospheric optical fiber communication and wireless communication advantages, can be applied to other needs of high-speed access in the terminal, some of the wiring should not be large or dangerous places. Military applications. As the light frequency much higher than the wave frequency, but also has good resistance to electromagnetic interference. The communication capacity is sufficient to meet the needs of tactical and even strategic communications, low power consumption, simple structure, easy to carry, fast and flexible networking is another highlight its advantages, so the atmosphere laser communication system is also suitable for short-range information in short-range mobile security line communication. The dispatcher adjusted the worker number of the day shift of green laser pointer .
In particular Turbo code and RS (30, 10) this system the two error-correcting codes have better error correction performance, the effect of significantly improving system performance, they are correcting the error rate of the system in 10 ? 5 the following. Rain in the general weather conditions in the system, the average bit error rate remains at 10 ? 4, the use of RS (15, 9) and LDPC codes for atmospheric laser communication systems to improve performance, improve the system bit error rate of 10 ? 6. If the sunny and cloudy days in the case, error correction, the average bit error rate before the system has less than 10 ? 7, the BER after error correction is to achieve a 10 ? 9. The ventilated condition of the warehouse of green laser pointer can ensure the good working status of led flash light .
Background noise filtering technology issues, if the use of narrow-band optical filtering techniques, but also there is the laser frequency stability of technical problems. Understand the basic structure of electro-optic modulator; familiar with the basic principles of laser atmospheric communication; master audio signal of the laser atmospheric communication debugging techniques; explore the impact of the effect of laser atmospheric communication factors. Adjust electro-optic modulators, modulator rotation, changes in the amplitude of the carrier signal, waveform, frequency changes, only a suitable place in a maximum amplitude, frequency signal generated. Laser atmospheric communication experiment, the rotating analyzer, oscilloscope waveform amplitude changes on the speaker sound will be smaller, rotating modulator, wave size and frequency of the sound changes. The equipment of manufacturing green laser pointer needs to be maintained.
Integrated with DWDM equipment. Rapid service provisioning. Rapid atmospheric laser communication network construction, simple operation, flexibility, strong, temporary emergency situations can be opened for quick service. Other special occasions. As the laser communication system both atmospheric optical fiber communication and wireless communication advantages, can be applied to other needs of high-speed access in the terminal, some of the wiring should not be large or dangerous places. Military applications. As the light frequency much higher than the wave frequency, but also has good resistance to electromagnetic interference. The communication capacity is sufficient to meet the needs of tactical and even strategic communications, low power consumption, simple structure, easy to carry, fast and flexible networking is another highlight its advantages, so the atmosphere laser communication system is also suitable for short-range information in short-range mobile security line communication. The dispatcher adjusted the worker number of the day shift of green laser pointer .
In particular Turbo code and RS (30, 10) this system the two error-correcting codes have better error correction performance, the effect of significantly improving system performance, they are correcting the error rate of the system in 10 ? 5 the following. Rain in the general weather conditions in the system, the average bit error rate remains at 10 ? 4, the use of RS (15, 9) and LDPC codes for atmospheric laser communication systems to improve performance, improve the system bit error rate of 10 ? 6. If the sunny and cloudy days in the case, error correction, the average bit error rate before the system has less than 10 ? 7, the BER after error correction is to achieve a 10 ? 9. The ventilated condition of the warehouse of green laser pointer can ensure the good working status of led flash light .
A large mount of parts and components of green laser pointer
If a suitable choice of parameters, and ultrasonic strong enough, can make all the laser energy transferred to almost zero level or +1 (or -1 level) of the diffraction extreme direction, so laser energy can be fully utilized. Therefore, use of Bragg diffraction acousto-optic devices made efficient. In theory, Maxwell's equations can be analyzed using the diffraction of light distribution. Analysis showed that the resulting Bragg diffraction conditions: where is the Bragg angle. Bragg diffraction of the zero-order diffracted light and an angle between the diffraction intensity of expression is. The worker should pay attention to self protection during manufacture process of led flash light.
Control of ultrasonic power to control the refractive index variation, so, there, that all the incident light energy is transformed into a diffraction light. The acousto-optic devices typically include four parts: power supply, transducer, and acoustic sound and light medium medium. Drive power was ultra-high frequency power signal generator, the output frequency, power Jieke tune. When added to the output signal on the transducer, then due to the piezoelectric crystal (such as quartz, LiNb, etc.) or piezoelectric semiconductors (CdS, ZnO, etc.) of the anti-piezoelectric effect produces mechanical vibration, the vibration in the sound and light media generated ultrasonic field. Acousto-optic medium is sound and light effects of the place, usually glass, fused silica, aluminum molybdate, antimony oxide and other materials. The warehouse stores a large mount of parts and components of green laser pointer .
Acousto-optic medium in the other side of sound-absorbing material, generally used in the lead-rubber or glass wool, etc., to absorb through the medium of ultrasound, to avoid reflections. He-Ne laser light, pre-combustion 20 minutes, it was basically stable. Adjust system components to coaxial. Added the source sound and light device, change the frequency and tuning system components, until the emergence of Raman - Ness diffraction observations. Acousto-optic devices to change the angle of the Bragg diffraction observations. According to the experimental apparatus to determine the diffraction angle measurement method. Observed Raman - Ness diffraction (tuning range of 30 ~ 60MHz): fixed light intensity, measured diffraction signal frequency of extreme deflection angle and the curve. Fixed light intensity, measured diffraction intensity and signal frequency curve. The worker is loading green laser pointer into the truck.
The observational data and theoretical calculations fitted to simple forms. Observed Bragg diffraction (tuning range of 100 ~ 150MHz): fixed light intensity, measured with a zero-order diffraction angle and signal frequency curve. To maintain the same frequency, measure the zero level, a strong diffraction bare, and the ultrasonic power curve. Adjust the He-Ne laser, aperture, acousto-optic devices and focusing lens, the laser beam hit the length measuring instrument panel, in the length measuring instrument among the most read highlights from the second point, and then tape measure sound and light measuring device with a long distance between the instrument, can be obtained using the diffraction angle arc tangent. The drawing of green laser pointer has to be renewed.
Control of ultrasonic power to control the refractive index variation, so, there, that all the incident light energy is transformed into a diffraction light. The acousto-optic devices typically include four parts: power supply, transducer, and acoustic sound and light medium medium. Drive power was ultra-high frequency power signal generator, the output frequency, power Jieke tune. When added to the output signal on the transducer, then due to the piezoelectric crystal (such as quartz, LiNb, etc.) or piezoelectric semiconductors (CdS, ZnO, etc.) of the anti-piezoelectric effect produces mechanical vibration, the vibration in the sound and light media generated ultrasonic field. Acousto-optic medium is sound and light effects of the place, usually glass, fused silica, aluminum molybdate, antimony oxide and other materials. The warehouse stores a large mount of parts and components of green laser pointer .
Acousto-optic medium in the other side of sound-absorbing material, generally used in the lead-rubber or glass wool, etc., to absorb through the medium of ultrasound, to avoid reflections. He-Ne laser light, pre-combustion 20 minutes, it was basically stable. Adjust system components to coaxial. Added the source sound and light device, change the frequency and tuning system components, until the emergence of Raman - Ness diffraction observations. Acousto-optic devices to change the angle of the Bragg diffraction observations. According to the experimental apparatus to determine the diffraction angle measurement method. Observed Raman - Ness diffraction (tuning range of 30 ~ 60MHz): fixed light intensity, measured diffraction signal frequency of extreme deflection angle and the curve. Fixed light intensity, measured diffraction intensity and signal frequency curve. The worker is loading green laser pointer into the truck.
The observational data and theoretical calculations fitted to simple forms. Observed Bragg diffraction (tuning range of 100 ~ 150MHz): fixed light intensity, measured with a zero-order diffraction angle and signal frequency curve. To maintain the same frequency, measure the zero level, a strong diffraction bare, and the ultrasonic power curve. Adjust the He-Ne laser, aperture, acousto-optic devices and focusing lens, the laser beam hit the length measuring instrument panel, in the length measuring instrument among the most read highlights from the second point, and then tape measure sound and light measuring device with a long distance between the instrument, can be obtained using the diffraction angle arc tangent. The drawing of green laser pointer has to be renewed.
The teacher gives led flash light back to the student
Electro-optical efficiency of the laser diode is greater than 30%, compared to CO2 and Nd: YAG laser, the efficiency of their respective values were 10% and 4%. Currently available high-power diode laser output power greater than 6KW, this strength is sufficient to meet the cladding, welding, heat treatment and metal surfaces. However, in the automobile industry, the initial application of laser welding in connection polymers. Although thermoplastics easily absorbed far infrared radiation, but generated by near-infrared diode laser light is opaque. Most of the energy is not absorbed by the polymer. However, you can have a choice of adding additives such as pigments, fillers, enhancer, etc. to make the plastic absorbs the laser energy. Some students want to buy green laser pointer .
Transmission welding of polymers and additives used in different absorption and transmission characteristics, using a form with some overlap to achieve welding. By careful selection of materials and additives, making contacts in the upper part and lower part can be transmitted laser was designed to absorb enough laser energy, which makes the interface melting, welding in order to achieve the purpose. In this application, the carbon is an ideal additive because it is easy to absorb the energy of the laser diode. Laser transmission welding of plastics welding technology with the existing number of advantages compared to. And the vibration / ultrasonic welding of different, non-contact laser transmission welding process, so are less likely to sensitive components, such as with electronic circuit components, causing damage. In addition, it almost does not require any special tools, and most of the vibration / ultrasonic, hot plate welding system requires many specialized tools for processing of components. The teacher gives led flash light back to the student.
In the laser processing of the key factors include: selection adding polymer additives (ie, pigments, reinforcing agent, processing aids), joint design, processing path design. UK Warwick Laser Systems, Inc. (Coventry City) has developed a laser transmission welding of plastic devices and achieve commercialization. The applicability of a thermoplastic assessment has identified a number of materials, welding conditions, the color of these materials include materials, polypropylene, polyethylene, acrylic resin, polycarbonate, glass fillers and thin film materials. As a non-contact technique, laser welding and other traditional techniques to avoid the related tools and product placement pollution problems. From the diode laser beam injection system is highly controllable, and the output is stable and can be pre-set, and allows continuous welding. High laser power, beam width, it can be a large area of the weld, in fact, the size and structure for the components without any restrictions. If necessary, the height of the beam control and beam transport accuracy is very precise to ensure the welding operation. green laser pointer can be very useful in the class.
In food packaging, medical equipment, and scientific equipment have been put to good use in the field of laser transmission welding technology, and the automotive industry is still the most important uses of this technology area. Recently, the British Birkby's Plastics, Inc. (West Yorkshire, Oliver Milicic) the use of laser transmission welding technology to create a new electronically controlled throttle (ETC) pedal for motor vehicles. Pedal as shown in Figure 1, it is made of glass-filled nylon mold, is widely used in the automotive industry.
Transmission welding of polymers and additives used in different absorption and transmission characteristics, using a form with some overlap to achieve welding. By careful selection of materials and additives, making contacts in the upper part and lower part can be transmitted laser was designed to absorb enough laser energy, which makes the interface melting, welding in order to achieve the purpose. In this application, the carbon is an ideal additive because it is easy to absorb the energy of the laser diode. Laser transmission welding of plastics welding technology with the existing number of advantages compared to. And the vibration / ultrasonic welding of different, non-contact laser transmission welding process, so are less likely to sensitive components, such as with electronic circuit components, causing damage. In addition, it almost does not require any special tools, and most of the vibration / ultrasonic, hot plate welding system requires many specialized tools for processing of components. The teacher gives led flash light back to the student.
In the laser processing of the key factors include: selection adding polymer additives (ie, pigments, reinforcing agent, processing aids), joint design, processing path design. UK Warwick Laser Systems, Inc. (Coventry City) has developed a laser transmission welding of plastic devices and achieve commercialization. The applicability of a thermoplastic assessment has identified a number of materials, welding conditions, the color of these materials include materials, polypropylene, polyethylene, acrylic resin, polycarbonate, glass fillers and thin film materials. As a non-contact technique, laser welding and other traditional techniques to avoid the related tools and product placement pollution problems. From the diode laser beam injection system is highly controllable, and the output is stable and can be pre-set, and allows continuous welding. High laser power, beam width, it can be a large area of the weld, in fact, the size and structure for the components without any restrictions. If necessary, the height of the beam control and beam transport accuracy is very precise to ensure the welding operation. green laser pointer can be very useful in the class.
In food packaging, medical equipment, and scientific equipment have been put to good use in the field of laser transmission welding technology, and the automotive industry is still the most important uses of this technology area. Recently, the British Birkby's Plastics, Inc. (West Yorkshire, Oliver Milicic) the use of laser transmission welding technology to create a new electronically controlled throttle (ETC) pedal for motor vehicles. Pedal as shown in Figure 1, it is made of glass-filled nylon mold, is widely used in the automotive industry.
The engineer should describe the result of the appearance inspection of led flash light
Laser tracking measurement system (Laser Tracker System) is a high precision industrial measurement systems in large-size measuring instruments. It is a collection of laser interference distance measuring technology, optical detection technology, precision machinery technology, computers and control technology, the modern theory of advanced numerical techniques for tracking moving objects in space and real-time measurement of target space three-dimensional coordinates. It has high accuracy, high efficiency, real-time tracking, quick installation, easy operation, etc., suitable for large-size workpieces equipped with measurement. The testing center of green laser pointer has the advanced inspecting instrument.
SMART310 is the Leica company in 1990 produced the first Laser Tracker, Leica 1993, the company launched a SMART310 the second generation product, then, Leica also introduced the LT / LTD series of laser tracker, to meet different industrial production. LTD series Leica laser tracker with a patented absolute rangefinder, high speed, high precision, Leica supporting software in a unified platform Axyz industrial measurement systems under development, including theodolite measurement module, total station measurements modules, laser tracker measurement module and digital photogrammetry module. The engineer should describe the result of the appearance inspection of led flash light .
Laser tracking system application in China began in 1996, on the fly, Shenyang Aircraft Group in China for the first time introduced SMART310 laser tracking system; 2005 Shanghai shield the company introduced a LTD600 Leica's tracking system, used in three-dimensional control mode detection. In recent years, laser tracking measurement system in the expanding field of applications, many companies have launched their own brand of laser tracker, but all of the basic laser tracking measurement system are tracked by the laser head (tracker), the controller, the user computer, reflector (mirror target) and measuring the composition of accessories. In this paper, experimental uses LTD600 laser tracking measurement system (Figure 2.1), so the specific discussion of the basic principle is based on LTD600 laser tracking measurement system. The customer asks to add one testing item of appearance inspection of green laser pointer .
Laser tracker is the essence of a laser interferometer to measure distance and angular distance of the automatic tracking total station, the difference is that it does not telescope, the laser beam to track the head, rotating mirror and form the axis of rotation of the laser tracker three axes, three-axis intersects the center of the origin of the coordinate system is measured. Principles of its structure shown in Figure 2.2. The main components of the system hardware, including: sensor head, controller, motor and sensor cable, LAN cable with the application of computers and reflector. Sensor head: Read the angle and distance measurements. Laser tracker head rotation around two orthogonal axes. Each axis has an encoder for angle measurement and a direct power of the DC motor to move the remote control. green laser pointer should be detected immediately.
Sensor head from the cylinder contains a measure of poor single frequency laser range finder interferometer (IFM), there is an absolute distance measuring device (ADM). Laser beam through the installation of the tilt axis and the axis of rotation directed at the intersection of the mirror reflector. Laser beam is used as the instrument axis is parallel to aim. Next to the laser interferometer photodetector (PSD) to receive part of the reflected beam, the tracker to follow the reflector. Controller: include power, encoder and interferometer with counter, motor amplifiers, processors and card track (Figure 2.3). Some minor defects of green laser pointer can be repaired.
SMART310 is the Leica company in 1990 produced the first Laser Tracker, Leica 1993, the company launched a SMART310 the second generation product, then, Leica also introduced the LT / LTD series of laser tracker, to meet different industrial production. LTD series Leica laser tracker with a patented absolute rangefinder, high speed, high precision, Leica supporting software in a unified platform Axyz industrial measurement systems under development, including theodolite measurement module, total station measurements modules, laser tracker measurement module and digital photogrammetry module. The engineer should describe the result of the appearance inspection of led flash light .
Laser tracking system application in China began in 1996, on the fly, Shenyang Aircraft Group in China for the first time introduced SMART310 laser tracking system; 2005 Shanghai shield the company introduced a LTD600 Leica's tracking system, used in three-dimensional control mode detection. In recent years, laser tracking measurement system in the expanding field of applications, many companies have launched their own brand of laser tracker, but all of the basic laser tracking measurement system are tracked by the laser head (tracker), the controller, the user computer, reflector (mirror target) and measuring the composition of accessories. In this paper, experimental uses LTD600 laser tracking measurement system (Figure 2.1), so the specific discussion of the basic principle is based on LTD600 laser tracking measurement system. The customer asks to add one testing item of appearance inspection of green laser pointer .
Laser tracker is the essence of a laser interferometer to measure distance and angular distance of the automatic tracking total station, the difference is that it does not telescope, the laser beam to track the head, rotating mirror and form the axis of rotation of the laser tracker three axes, three-axis intersects the center of the origin of the coordinate system is measured. Principles of its structure shown in Figure 2.2. The main components of the system hardware, including: sensor head, controller, motor and sensor cable, LAN cable with the application of computers and reflector. Sensor head: Read the angle and distance measurements. Laser tracker head rotation around two orthogonal axes. Each axis has an encoder for angle measurement and a direct power of the DC motor to move the remote control. green laser pointer should be detected immediately.
Sensor head from the cylinder contains a measure of poor single frequency laser range finder interferometer (IFM), there is an absolute distance measuring device (ADM). Laser beam through the installation of the tilt axis and the axis of rotation directed at the intersection of the mirror reflector. Laser beam is used as the instrument axis is parallel to aim. Next to the laser interferometer photodetector (PSD) to receive part of the reflected beam, the tracker to follow the reflector. Controller: include power, encoder and interferometer with counter, motor amplifiers, processors and card track (Figure 2.3). Some minor defects of green laser pointer can be repaired.
The green laser pointer is sensitive to operate and it would be a good tool at meeting
Seize this opportunity to vigorously popularize scientific knowledge, spread scientific spirit, improve the scientific quality of young people, our whole society is an important issue. Science education is an important factor in improving the quality of young people is the core of modern education, which not only make the young people to obtain life and knowledge and skills required in the future, more important is to make young people access to scientific thinking, scientific spirit, scientific attitude and scientific method of nurturing and training. The applied imported LD and fittings add the useful time of green laser pointer.Science education, so that the young people to establish such a strong belief: Science is always looking for, find and understand the world of new phenomena, study and master the new law, it is creative, it is the relentless pursuit of truth, we need to continue to work hard. In the new century, with the high-tech sector continues to develop new technologies for our science education provides a vast world. Throughout the history of human civilization, the development of science and technology, every major breakthrough in productivity will lead to profound changes and great progress of human society. With the increasing penetration of science and technology in economic development and social life in all areas for promoting the development of modern society, the most active factor in the progress of modern society and decisive force. The built-in laser module has improved the heat abstractor of green laser pointer.Economic growth in developed countries, modern war, the increasingly well-developed communication media business, everywhere reflects the power of technology, but also rapidly changing the traditional concept of people, full of scientific knowledge makes it a strong desire. The rapid development of high-tech science and technology popularization of knowledge, not only can make young people understand today's technology development status, and can make small lofty ideals: to learn scientific knowledge, human civilization grow up to make its due contribution.The green laser pointer is sensitive to operate and it would be a good tool at meeting. To this end, we have compiled a set of "youth science knowledge" series, including "fighter Grand," "ships Expo", "missile encyclopedia", "artillery of the Library", "chariot Kingdom", "military vanguard" "Arms forward," "Space Age", "moon Fax", "Space Station Window", "Air Files," "space age", "Time mystery," "weather microcosm", "laser focus", "communication Outlook "," nano research, "" family material "," nuclear energy outlook, "" energy treasure, "" architectural wonders "," bionic experiment "," new agricultural empty "," green end "," The health care revolution ", "window of Civil Aviation", "traffic aspect," "computer rookie", "Network World" and "micro-password", "Life Revisited", "the future of mankind."The protective design for the circuit wafer collector of green laser pointer is a big advantage of it. The contents of the main selection of modern cutting-edge technology in various projects or areas to introduce the research process, scientific principles, and application development prospects, the young people standing in today's technology to find a new starting point for the future of science and technology join the points and the breakthrough constant pursuit of new scientific and technological future. led flash light This set of comprehensive youth science books and foreign knowledge the latest technology research, has a strong science, knowledge, cutting-edge, readability and systematic, the young people understand the science and technology, increase knowledge, broaden horizons and improve the quality of the to stimulate exploration and enlightened wisdom of the spectrum of reading good subjects, all levels of the library collection is the best version.
The new production line of green laser pointer
The equivalent of one day LISA interferometer, laser interferometry to measure relative distance changes. MS-LRF is a Japan Aerospace Research Division (ISAS) plans for the micro-satellite formation in the inter-satellite laser measurement system state measurements. Since the narrow laser beam, using the traditional laser radar satellites can not be observed simultaneously, so the formation of satellites. Require the use of scanning laser detection equipment, rotating the device by scanning multiple target search and measurement. MS-LRF is based on micro-mechanical technology, dual-axis scanning system (Figure 4). The new production line of green laser pointer will greatly increase the output of green laser pointer .
The system consists of optical scanning devices, micro-lens, beam splitter, laser diodes, avalanche photodiodes, used to drive the piezoelectric scanner gear, drive circuit and signal processing loop composition. MS-LRF measurement principle: laser diodes, respectively, by spectroscopic and laser scanning micro-mirror reflection plane after the shooting at the target. Received by the target by the laser part of the launch angle reflector. Return along the original path. And eventually be sensitive avalanche photodiodes to detect. Formation of satellites used in MS-LRF requires very high accuracy and frame rate, so the use of a continuous wave laser phase-ranging. For 0.1> 10km distance between the star, the semiconductor laser 5kHz and 1MHz were used to modulate two frequencies. The director will be directly in charge of the new production line of led flash light.
Measurement accuracy of 1m. In summary, laser ranging technology in space has been used widely. Because of its all-weather, precision, interference, and other unique advantages of miniaturization, laser ranging and more attention, has become the field of space exploration - an important technical means, in the military and industrial applications has a very high value. Engineering applications, especially as the needs of aerospace applications, laser ranging technology is constantly evolving and progress. Laser ranging device is now moving to a small (small size, low power consumption), precision (high precision), far (far measurement range), fast (short measuring time, high repetition rate) and direction. Laser ranging technology easily and other detection technology integration, resulting in more powerful, multi-detection system. The new manufacture base of green laser pointer will be equipped with the advanced technology.
In recent years, the study of laser ranging technology attaches great importance to many domestic universities and research institutes are carrying out this research and engineering work. But space laser ranging is a very complex technology, there are still many key technologies to be resolved, so the field of application for space exploration is not much research in the field of aerospace and even less real practical application. Chang-e lunar satellite laser altimeter used in China is currently the only set of the first set of laser ranging equipment into space. The field of space exploration as an important technology, accelerate the development of space technology in the field of laser ranging applied research work is very necessary and needed. The new manufacture base of green laser pointer draws a lot of attention.
In addition, avalanche photodiodes, high-frequency current modulation of laser technology, laser ranging and critical components and technology is still lagging behind the international advanced level, domestic laser ranging equipment ranging accuracy, reliability, and the international advanced level, there are a gap. So. The laser ranging method in research and applications, but also in some of the key components, critical technology to carry out focused research, which for the promotion of domestic technological progress and laser ranging in the field of space applications is necessary and reliable. Can say for sure. In the near future, laser ranging technology in the military and the national economy will play an increasingly important role. The testing center of green laser pointer has five floors.
The system consists of optical scanning devices, micro-lens, beam splitter, laser diodes, avalanche photodiodes, used to drive the piezoelectric scanner gear, drive circuit and signal processing loop composition. MS-LRF measurement principle: laser diodes, respectively, by spectroscopic and laser scanning micro-mirror reflection plane after the shooting at the target. Received by the target by the laser part of the launch angle reflector. Return along the original path. And eventually be sensitive avalanche photodiodes to detect. Formation of satellites used in MS-LRF requires very high accuracy and frame rate, so the use of a continuous wave laser phase-ranging. For 0.1> 10km distance between the star, the semiconductor laser 5kHz and 1MHz were used to modulate two frequencies. The director will be directly in charge of the new production line of led flash light.
Measurement accuracy of 1m. In summary, laser ranging technology in space has been used widely. Because of its all-weather, precision, interference, and other unique advantages of miniaturization, laser ranging and more attention, has become the field of space exploration - an important technical means, in the military and industrial applications has a very high value. Engineering applications, especially as the needs of aerospace applications, laser ranging technology is constantly evolving and progress. Laser ranging device is now moving to a small (small size, low power consumption), precision (high precision), far (far measurement range), fast (short measuring time, high repetition rate) and direction. Laser ranging technology easily and other detection technology integration, resulting in more powerful, multi-detection system. The new manufacture base of green laser pointer will be equipped with the advanced technology.
In recent years, the study of laser ranging technology attaches great importance to many domestic universities and research institutes are carrying out this research and engineering work. But space laser ranging is a very complex technology, there are still many key technologies to be resolved, so the field of application for space exploration is not much research in the field of aerospace and even less real practical application. Chang-e lunar satellite laser altimeter used in China is currently the only set of the first set of laser ranging equipment into space. The field of space exploration as an important technology, accelerate the development of space technology in the field of laser ranging applied research work is very necessary and needed. The new manufacture base of green laser pointer draws a lot of attention.
In addition, avalanche photodiodes, high-frequency current modulation of laser technology, laser ranging and critical components and technology is still lagging behind the international advanced level, domestic laser ranging equipment ranging accuracy, reliability, and the international advanced level, there are a gap. So. The laser ranging method in research and applications, but also in some of the key components, critical technology to carry out focused research, which for the promotion of domestic technological progress and laser ranging in the field of space applications is necessary and reliable. Can say for sure. In the near future, laser ranging technology in the military and the national economy will play an increasingly important role. The testing center of green laser pointer has five floors.
A very small green laser pointer alignment
The laser beam curing a particular area, to form parts of a physical level - the gradual accumulation of physical shape to form part of a gradual accumulation of the formation of a prototype level (three-dimensional solid) into prototypes (three-dimensional solid) with a simple repetition of the operation of forming two-dimensional complex three-dimensional parts manufacturing optical laser rapid prototyping technology is an important application manufacture of complex shaped parts rapid prototyping manufacture a variety of materials, parts or non-homogeneous material small batch production of plastic parts manufacture all kinds of mold or model of the laser.The 18650 battery applied to the green laser pointer has high capacity. Metrology applications in laser measurement features: laser measurement characteristics: light and the measured object non-contact, non-contact light and the measured object can be measured in the field of laser working distance optical detection of laser interferometry analysis of optical fiber sensor to measure the distance measurement position, determination of position, direction, determination of flow measurement of non-destructive inspection environment collimated laser microscope, laser alignment: the use of laser has a very good direction, a very small green laser pointer alignment: divergence angle, etc., used in construction, surveying buildings , building surveying, etc., and high accuracy. The 18650 battery used by green laser pointercould easily be purchased.Collimation available low-cost, low-energy He-Ne, semiconductor lasers, laser material laser radiation detector telescope laser ranging SLR advantages: convenience, laser ranging advantages: easy, accurate interferometry interferometry - accurate measuring short-range, accurate measurement of short-range accuracy, accurate measurement of short-range order of magnitude to the wavelength used for long distance measurements: measuring distance from the pulsed laser is used to measure: the laser to the target location and back to the target and back to the time t full-time location of the laser reflection angle prism features fully backward reflected light and incident light parallel to the laser laser ranging instrument than the length of the laser radar system for other purposes (short-range) laser radar system for other purposes (short distance) measurement of the atmospheric environment (by measuring the light scattering properties of atmospheric environment measurement and time delay information, testing air pollution) the distance between aircraft and ground vehicles and ground positioning satellite distance (satellite positioning satellite positioning) rocket or missile tracking laser speed measurement.The new battery of green laser pointer could work for a long time. In the Michelson interferometer, the Michelson interferometer to measure distance and time of the mirror, and stripe count N, distance and time, and stripes count, to measure speed. To measure speed. Blood flow velocity gun for laser treatment laser is used for agriculture 1 seeds: role of the seed laser, capable of handling the seed: role of the laser seed, seed treatment to the appropriate intake of the photon cell, the appropriate intake of the photon cells, enhanced cell biological capacity, promote seed development, the biological capacity to promote seed development, improve the photosynthetic effect, shorten the maturity, the combined effect of shorter maturity, and can enhance the disease resistance of crops.The fore button on the green laser pointer body makes it convenient to control the condition of led flash light.
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Young scientific knowledge scientific knowledge of the laser focus Foreword Foreword young science is the driving force of human progress, and the popularization of scientific knowledge is the only way to achieve this promotion. In the new era of social progress, technological development, the continuous improvement of living standards, science education for our young people to provide a new opportunity.
Found the quality of printing equipment, affect the reading, please contact the exchange and printing.
Young scientific knowledge scientific knowledge of the laser focus Foreword Foreword young science is the driving force of human progress, and the popularization of scientific knowledge is the only way to achieve this promotion. In the new era of social progress, technological development, the continuous improvement of living standards, science education for our young people to provide a new opportunity.
The material the workshop needs from the warehouse of green laser pointer
However, even in sunny weather conditions, light intensity and the transmission direction of the radiation will fluctuate, this fluctuation is a popular molecules, aerosol particles and air turbulence caused by the inhomogeneity. Such as laser range finder even after years of development, technology, engineering, when there are many problems to be solved. If these problems are not addressed, will be brought to the volume of manufacturing difficulties, while production costs will increase and the promotion of the laser range finder to bring some adverse effects. Only the complete and signed material inquisition sheet of green laser pointer can get the material the workshop needs from the warehouse of green laser pointer.
The issue comes from the semiconductor laser ranging system. Narrow pulse laser alignment system as a subsystem of a whole range finder, laser range finder is an important part, both from the improved system stability and efficiency, or from industrial production to achieve the system in terms of miniaturization, launch the design alignment are key. Therefore, the semiconductor laser ranging system, part of the launch of alignment design is very meaningful. 1940s, due to electromagnetic theory and technology, while the urgent need because of the war, the British first developed the radar. Its appearance is a historic breakthrough ranging technology. It allows people the first time at a fixed point in different directions on the rapid determination of the instantaneous distance of the target in the battle of Germany played a key role. led flash light of different specifications can meet different needs of different customers.
But it also has some shortcomings, the relatively long wavelength emission of electromagnetic waves, early radar beam is wider, lower spatial resolution, only applies to the monotonous background of target detection, but also susceptible to interference and attacks with serious shortcomings. 1960s appeared laser technology has greatly promoted the scientific, technical, economic and social development. Laser because of its good directivity, monochromaticity, high brightness, and soon to be used in distance. Although only a band with the radar compared to the change, but it has greatly expanded its ranging capability, such as accurately measuring the distance from Earth to the Moon. Laser ranging in the following advantages: high precision ranging, Damien level can be even higher; laser beam divergence angle is small, strong directional; anti-electromagnetic interference capability, able to adapt to battlefield conditions are very complex electromagnetic environment ; of microwave radar stealth targets, while the laser is usually not stealth, stealth target distance relative improvement. The expert group will start the manufacture supervision of green laser pointer in the workshop tomorrow.
Since the 1960s, the first since the advent of the laser range finder, laser ranging technology is developing rapidly. Until now, laser rangefinder has been developed to the third generation: the first material for the work on behalf of the ruby laser rangefinder; second generation in Nd: YAG working material for the laser range finder; third behalf of the human eye safe laser rangefinder. The first generation of laser range finder came in the early 1960s, working material for the ruby laser, wavelength of 0.69μm. Early 1961, Hughes Aircraft Company Culver City, Malibu, and the two groups, respectively, created the first active laser ranging system, and operate the [2]. As the launch of the red light, easy to expose, plus the low efficiency of the system, size, power consumption than other shortcomings, will soon be
The issue comes from the semiconductor laser ranging system. Narrow pulse laser alignment system as a subsystem of a whole range finder, laser range finder is an important part, both from the improved system stability and efficiency, or from industrial production to achieve the system in terms of miniaturization, launch the design alignment are key. Therefore, the semiconductor laser ranging system, part of the launch of alignment design is very meaningful. 1940s, due to electromagnetic theory and technology, while the urgent need because of the war, the British first developed the radar. Its appearance is a historic breakthrough ranging technology. It allows people the first time at a fixed point in different directions on the rapid determination of the instantaneous distance of the target in the battle of Germany played a key role. led flash light of different specifications can meet different needs of different customers.
But it also has some shortcomings, the relatively long wavelength emission of electromagnetic waves, early radar beam is wider, lower spatial resolution, only applies to the monotonous background of target detection, but also susceptible to interference and attacks with serious shortcomings. 1960s appeared laser technology has greatly promoted the scientific, technical, economic and social development. Laser because of its good directivity, monochromaticity, high brightness, and soon to be used in distance. Although only a band with the radar compared to the change, but it has greatly expanded its ranging capability, such as accurately measuring the distance from Earth to the Moon. Laser ranging in the following advantages: high precision ranging, Damien level can be even higher; laser beam divergence angle is small, strong directional; anti-electromagnetic interference capability, able to adapt to battlefield conditions are very complex electromagnetic environment ; of microwave radar stealth targets, while the laser is usually not stealth, stealth target distance relative improvement. The expert group will start the manufacture supervision of green laser pointer in the workshop tomorrow.
Since the 1960s, the first since the advent of the laser range finder, laser ranging technology is developing rapidly. Until now, laser rangefinder has been developed to the third generation: the first material for the work on behalf of the ruby laser rangefinder; second generation in Nd: YAG working material for the laser range finder; third behalf of the human eye safe laser rangefinder. The first generation of laser range finder came in the early 1960s, working material for the ruby laser, wavelength of 0.69μm. Early 1961, Hughes Aircraft Company Culver City, Malibu, and the two groups, respectively, created the first active laser ranging system, and operate the [2]. As the launch of the red light, easy to expose, plus the low efficiency of the system, size, power consumption than other shortcomings, will soon be
Health Laser Laser green laser pointer in the beginning
This radiation output of the light received, amplified, and is coherent light, such as the number of photons that transmit direction, frequency, phase, polarization identical. 2 Since then, many laboratories the world have been involved in the development of a fierce competition to see who can successfully build and operate the world's first laser. December 1960, Iranian-born American scientist who Jia Wan rate finally succeeded in creating and running the world's first gas laser - He-Ne laser.The automatic coding technology avoids the mutual interference of adjacent green laser pointer users. In 1962, there are three groups of researchers almost simultaneously invented the semiconductor laser. In 1966, scientists have developed into a range of wavelengths can be continuously adjusted in the organic dye laser. In addition, the output energy, high power, and do not rely on the grid of chemical lasers have come out. 3 by the time the popular "electronic center, laser universal" view of the river more than 70 years, developed a 6328AHe-Ne laser; and had infrared receiver devices; carbon dioxide laser scanner; laser gas alarm; laser scalpel; infrared auto-oriented car; laser-breeding; low-power infrared light source research.The emitter of green laser pointer is round and smart. Company information 11 laser laser-generated definitions and conditions 1 Definitions Light Amplification by Stimulated Emis sion of Radiation, which means light amplification by stimulated emission of radiation. Visible laser stimulated laser radiation is to produce the first laser to condition 2 laser to produce the conditions for the formation of the laser laser, the material must have a working laser metastable level. This is the second generation laser laser conditions. Laser select the appropriate material to the electronic energy levels in the sub-level than the low-energy electron more than that the formation of inversion, so that stimulated emission than absorption. This is a laser-produced the third condition. Health Laser Laser green laser pointer in the beginning is the spontaneous emission of photons of laser produced raw, chaotic frequency and direction.The body of green laser pointer has been sprayed metallic paint on the surface. For frequency simple, centralized direction, there must be a resonant cavity. This is the fourth generation laser laser conditions. Company information 12 laser laser laser category classification: are many types of lasers. Here, the laser will work from the material, incentives, operating mode, the output wavelength range, and several other aspects of classification introduced. ① solid (crystal and glass) lasers; ② gas lasers, they work the material used is a gas, can be further divided into atomic gas lasers, ion gas lasers, molecular gas lasers, excimer gas lasers; ③ liquid laser, a class of organic fluorescent dye solution, and the other is the rare earth ion containing solution of inorganic compounds, including metal ions (such as Nd) particles from the work role, and inorganic compounds, liquid (such as SeOCl) will play the role of matrix; Pull out the receiver of led flash light and insert it into the USB interface port.④ semiconductor lasers, which semiconductor lasers based on a certain class of substances that produce material for the work of the role of stimulated emission, the principle is certain incentives (power into the optical pump or high-energy electron beam injection), in the semiconductor material of the band or band and between between the impurity levels, by stimulating non-equilibrium carriers and to achieve population inversion, resulting in the role of stimulated emission of light; Company's basic structure information 13 laser 14 laser company name information for the Cartesian coordinate system axis z axis to the center of the cavity as the origin, with the z-axis perpendicular to the laser plane to take the laser to take each other on the x-axis and vertical y-axis.
Laser pointer to the receiver you must use to the receiver must use it
315MHZ and 433MHZ is our country free of transmitting and receiving frequency of application for long-distance transmission, strong diffraction. This product is used in the field of wireless meter reading than the more launch power, energy consumption is relatively large, is not suitable for battery-powered applications. disk functionality? Q: Your products are with u disk function? CD Xin laser pointer can be customized according to customer requirements u disk size, different capacity, the price difference. standard is without capacity. that looks like u disk, is the product of the receiver, does not contain capacity system, the receiver indicator light, but still have to install the driver. is how it happened?When select a green laser pointer, remember to check if the optical spot is big and light. Q: My computer is XP system, the receiver indicator light, but still have to install the driver. is how is it? A: hello, only Xin Laser Pointer full line of products are supported windows 2000/XP/viata/win7 system if the problem occurs in XP, please try on another computer. may be your system is a streamlined version installed, the lack of certain procedures is recommended to download the patch and then try sp3 can be a transmitter simultaneously control multiple receivers it? Q: Can a transmitter to control multiple receivers simultaneously? Yes. multiple receivers connected to the usb port, click the transmitter.Remember to check what kinds of computer files the led flash light can identify. The flip key, you can achieve the code this time, a transmitter can simultaneously control multiple receivers. The receiver has an internal memory, the receiver in the state of the code, you can receive the address code stored in memory We called it "code." receivers and transmitters to the code after the formation of a one to one relationship, only to receive the control signal transmitter, so a transmitter in order to control multiple receivers, you need With this transmitter and each receiver for the job of the code. on the code after all receivers have the same address code stored on the same transmitter can be controlled while the products need to install driver? Q: product needs install driver? any USB devices plugged into the USB port on your computer, operating system such as Windows, Linux, Mac are the first to install the device driver, then the user can operate the equipment. The page-turning green laser pointer has already been widely used in society.The difference is that operating systems have built- USB driver for this device now a common operating system, Windows XP, such as Windows 2003, Windows Vista, WINDOWS 7, Windows Server 2008, Linux, Mac comes with CD Xin laser pointer used by the driver when the CD Xin Laser pen into the USB port on the computer, the operating system automatically recognizes the device and automatically install the driver that comes with the operating system so the user only needs to insert the CD on your computer's USB port receiver Xin laser pointer , and then wait 3-5 seconds, you can use, and do not need to download and install the driver does not need to use the driver CD to install the driver. laser pointer to the receiver you must use to the receiver must use it?All teachers can use green laser pointer to get rid of the embarrassment of being restricted by the dais. Q: laser pointer to the receiver must use it? page by wireless green laser pointer is a page of instructions to achieve the computer.
The technical innovation group of green laser pointer
Process parameters on the cladding layer size and organizational impact. In conventional power density (103-l06W/cm2) when the laser cladding, the 0.1-1s can be completed within the time course of the cladding, such a high rate of heating and cooling of the organization making the cladding layer has many features. In general, the laser cladding layer structure is divided into three zones: melting zone, transition zone and heat affected zone, in a different alloy composition and process conditions, there are some differences between the actual shape. Energy distribution of laser processing equipment as well as supporting uniformity and stability of the device has not yet reached the level of industrial production applications. Laser cladding process requires high-power laser beam stability, uniform distribution of the energy spot higher. The current management of laser melting of the main problems is the surface of the cladding layer is not flat, large amount of subsequent machining, and the alloy layer and the substrate at the junction prone to cracks and holes and other defects, to the great practical difficulties. At present, the laser processing system of fixed assets and maintenance costs relative to conventional welding and spray coating is more expensive, which makes laser-treated higher product cost, which is not laser cladding process on a large scale in the field one of the main practical application. The technical innovation group of green laser pointer will try to solve the innovation problem of green laser pointer.
High concentration of laser radiation energy, can be transported over long distances through the air. Approach is a fast, efficient use of energy. Can accurately control the heating power density and speed, and thus the deformation is small, but hardened and plasma arc spraying uses a non-uniform heating and cooling in the quenching process in thermal shock, resulting in cross-shaped and crack, often requires straightening and polishing process . Make inaccessible areas and local alloying, and the use of the laser depth focus on the parts available in the irregular uniform alloying depth. Based on the above characteristics, laser alloying the metal processing industry gradually began to get a variety of applications. So far for laser alloying the substrate with ordinary carbon steel, alloy steel, stainless steel, cast iron, cobalt and aluminum alloys, alloying elements, including Cr, Ni, W, Ti, Mn, B, V, Co, Mo and so on. Laser alloying process method is generally used in three ways: pre-law materials, hard particle injection at the same time and gas phase alloy method. The more commonly used methods. The use of electro-deposition, vapor deposition, ion implantation, brush, layer remelting, flame and plasma spraying, adhesive coating and other methods will be required prior Xu alloy powder to cover the surface alloying, and laser heating melting, the alloy surface to form a new layer. This approach in some iron-based alloy surface when widely used. The requirements of the deposited film substrate is a clean, smooth surface film interface. The director of led flash light will announce the administration decision of the manager.
In summary, the laser cladding process is a rapid solidification technique, it can produce a state of equilibrium can not be obtained under the excellent organization and performance. Restrictions on the substrate can be used according to design performance coating composition, can be prepared in a low-cost steel high-performance alloy and the substrate surface and the combination of high strength, is the other surface treatment processes can not match, is particularly suitable for oilfield corrosion, friction and wear of working conditions common surface of wearing parts and repair. Although there are still some problems on the application, but with the people of their study of theory and technology tend to improve gradually in-depth and I believe that in the near future will be excavated in the industry and its potential far-reaching impact. Laser alloying (Laser Surface Alloying, LSA) is a partial modification of metal surface, a new method, laser surface alloying process is a material modification of the scope. The technical innovation of green laser pointer is in the process.
High concentration of laser radiation energy, can be transported over long distances through the air. Approach is a fast, efficient use of energy. Can accurately control the heating power density and speed, and thus the deformation is small, but hardened and plasma arc spraying uses a non-uniform heating and cooling in the quenching process in thermal shock, resulting in cross-shaped and crack, often requires straightening and polishing process . Make inaccessible areas and local alloying, and the use of the laser depth focus on the parts available in the irregular uniform alloying depth. Based on the above characteristics, laser alloying the metal processing industry gradually began to get a variety of applications. So far for laser alloying the substrate with ordinary carbon steel, alloy steel, stainless steel, cast iron, cobalt and aluminum alloys, alloying elements, including Cr, Ni, W, Ti, Mn, B, V, Co, Mo and so on. Laser alloying process method is generally used in three ways: pre-law materials, hard particle injection at the same time and gas phase alloy method. The more commonly used methods. The use of electro-deposition, vapor deposition, ion implantation, brush, layer remelting, flame and plasma spraying, adhesive coating and other methods will be required prior Xu alloy powder to cover the surface alloying, and laser heating melting, the alloy surface to form a new layer. This approach in some iron-based alloy surface when widely used. The requirements of the deposited film substrate is a clean, smooth surface film interface. The director of led flash light will announce the administration decision of the manager.
In summary, the laser cladding process is a rapid solidification technique, it can produce a state of equilibrium can not be obtained under the excellent organization and performance. Restrictions on the substrate can be used according to design performance coating composition, can be prepared in a low-cost steel high-performance alloy and the substrate surface and the combination of high strength, is the other surface treatment processes can not match, is particularly suitable for oilfield corrosion, friction and wear of working conditions common surface of wearing parts and repair. Although there are still some problems on the application, but with the people of their study of theory and technology tend to improve gradually in-depth and I believe that in the near future will be excavated in the industry and its potential far-reaching impact. Laser alloying (Laser Surface Alloying, LSA) is a partial modification of metal surface, a new method, laser surface alloying process is a material modification of the scope. The technical innovation of green laser pointer is in the process.
Let’s get to know something about the identity of green laser pointer
As the laser processing is non-contact machining, tool and the workpiece surface is not observed directly generate resistance to wear, so fast laser processing, processing of objects and small heat affected area will not produce noise. As the laser beam energy and beam speed can be adjusted so the laser processing can be applied to different levels and scope. Currently, the accepted principle of laser processing are two: namely laser thermal processing and photochemical processing (also known as cold). Laser thermal processing means that when the laser beam to the surface, causing rapid heating, thermal properties of the object changes or the material melting evaporation.The receiver of led flash light has no capacity even it looks like a USB drive. Thermal processing of high energy density laser beam (which is to focus on the energy flow), irradiation in the surface to be machined on the surface absorb the laser energy, heat generated in the irradiated region to stimulate the process, so that surface (or coating ) temperature rise, resulting in abnormal, melting, ablation, evaporation and other phenomena. Photochemical processing means that when the laser beam is added to an object, high-density energy photon trigger or control the processing of photochemical reactions. Cold with a high load energy (UV) photons to break material (especially organic material) or the chemical bonds within the surrounding medium, to make the material non-thermal process damage occurred.Let’s talk about something about the working theory of green laser pointer . This cold processing laser tag has a special significance, because it is not thermal ablation, but do not have a "thermal damage" side effects, break chemical bonds of the cold strip, and thus be processed in the surface layer and in the vicinity do not produce heat or thermal deformation and so on. For example, the electronics industry in the use of excimer laser deposition of chemicals on the substrate film on the semiconductor substrate out of the narrow slot. Third edition of the key technologies of laser cutting laser processing technology is widely used in laser cutting of metal and non-metallic materials, processing, can significantly reduce processing time, reduce processing costs, improve quality of the workpiece. Laser cutting is laser focused by the generation of high power density energy to achieve.Let’s get to know something about the identity of green laser pointer . With the traditional plate processing methods, laser cutting of its high quality cutting, high cutting speed, high flexibility (free to cut any shape), a wide range of materials, adaptability and so on. Laser welding Laser welding laser materials processing technology of the important aspects of the welding process is a thermal conductivity type, that is, laser radiation heating surface, the surface of the heat through the heat transfer-based internal diffusion, by controlling the laser pulse width, energy, peak power and repetition frequency and other parameters, so that the workpiece melt to form a specific pool. Because of its unique advantages, have been successfully applied to micro, small parts welding. Compared with other welding, laser welding of the main advantages are: laser welding speed, depth, and deformation. At room temperature or under special conditions for welding, welding equipment installation simple. Do you know any application of green laser pointer ?Laser drilling with portable electronic products towards, the direction of miniaturization, miniaturization of the circuit board raised higher and higher demand, improve the level of a small circuit board that is more critical and different levels of narrow linewidth line between the smaller micro-vias and blind holes. Traditional mechanical drilling the smallest size of only 100? M, which obviously does not meet the requirements, on behalf of and is taken from a new type of laser micro-vias processing methods.
The director in charge of led flash light will host the meeting
The director of green laser pointer is in charge of the quality control of green laser pointer. It refers to the high-energy laser beam irradiation, the substrate surface with a thin layer of alloy elements added as needed while rapid melting, mixing, forming a thickness of 10 ~ l000 um layer of surface melting, solidification of molten layer to obtain the cooling rate of up to l05-108 ℃ / s, equivalent to quench hardening technology can achieve the cooling rate, and because the memory in a liquid melt layer diffusion and surface tension effects and other physical phenomena, so that surface only in the short report time (50us-2ms) with required depth and chemical composition of the surface alloying layer, non-equilibrium rapid melting process allows alloying elements in the organization after solidification had reached a high saturation, and thus form a common alloying method does not Rongyi the compounds, metastable phase and new phase, but also elements in the combined consumption of low Qian obtained under conditions of surface alloys with specific properties. Because of this alloy layer above the substrate of some performance, so we reached the table and modification purposes. The director in charge of green laser pointer is in the workshop.
Laser surface alloying process has been characterized only in the melting zone and the area had little impact on composition, structure and properties change, the thermal effect of the matrix can be reduced to a minimum, causing the deformation is minimal. It can satisfy the need to use the surface, without sacrificing the overall characteristics of the structure. As alloying elements are completely dissolved in the surface, the composition thus obtained is very uniform thin layer of cracking and spalling tendency is not so sensitive. The other notable feature is the use of laser power density is high (104-108 W/cm2). Melting depth by the laser power and exposure time to control, in the base metal surface to form a depth of 0.01 ~ 2mm of the alloy layer. As the cooling rate is high, so segregation is extremely small, and the grain refinement effect is remarkable. Laser alloying technique using cheap common materials can be useful for surface abrasion, corrosion, heat and other properties, from the surface can replace expensive overall alloy; and improved stainless steel, aluminum and titanium alloy wear resistance; Preparation of conventional metallurgical methods may not be some special materials, such as superconducting alloy, metal and glass. Surface hardening and ordinary arc and plasma spraying, laser alloying of the following advantages. The director in charge of led flash light will host the meeting.
Thin film can usually be pre-vapor deposition, vacuum sputtering, ion implantation by means of the system, and for the production of thick film presets. Can be used electroplating, spraying, rolling, diffusion (such as boronizing), pre-coated alloy powder or diaphragm and other methods. Rigid ion injection method is characterized by the same laser to melt the substrate surface while spraying people in the pool or hard alloy powder particles in order to achieve surface alloying. Laser gas alloying: refers to the appropriate atmosphere (nitrogen, carburizing atmosphere, etc.), the substrate using laser heating and melting the surface of the gas through the atmosphere, the reaction with the substrate, the thickness of the surface solid than those of normal processing to obtain the thickness of the reaction is much greater. It is mainly used in the A1, Ti and its alloys and other soft alloy substrate treatment, respectively, obtained TiN, TiC or Ti (C, N) compound layer such as surface hardness of up to l 000Hv more. Convection in the molten pool, the alloying elements can quickly penetrate the deeper parts. Laser surface alloying layer of tissue is characterized by alloying tissue heterogeneity. Includes three aspects: First, alloying heterogeneity within the pool, in its cross-section will be organized within the gradient; second alloy pool within the macro-organizational heterogeneity; third is covered in front of the large cyclical changes area alloying lap area. The workshop of green laser pointer is well organized.
Gradient in the organization, the common characteristics of complex organizations, there are three: flat crystal - crystal-like cells - cellular dendrite - dendrite; cellular crystal - cellular dendrite - dendrite; cellular dendrite - dendrite. Laser alloying of the macro-organizational heterogeneity is in some cases low magnification macro-organization of its non-uniform, which, from a physical metallurgy point of view, the formation of macroscopic tissue heterogeneity is mainly due to laser melting the alloy under not melt pool convection in the melt of the alloy elements within his mixing, the composition of the present macro-heterogeneity. Using laser surface alloying process can be in some cheap, poor surface properties of the system out of the base metal surface wear and corrosion, high temperature alloy surface, the overall alloy to replace expensive, saving precious materials and strategic materials, the Authority, the low-cost alloy for more widely used, thus greatly reducing costs. In addition, it can also be used to create a performance with the conventional metallurgical methods fundamentally different surface alloy, for example, foreign laser surface alloying process developed superconducting alloy MoN, MoC and V3Si, the surface of the metal used to make glass FeCrCB, NiNB and so on. The workshop of green laser pointer is under construction.
Laser surface alloying process has been characterized only in the melting zone and the area had little impact on composition, structure and properties change, the thermal effect of the matrix can be reduced to a minimum, causing the deformation is minimal. It can satisfy the need to use the surface, without sacrificing the overall characteristics of the structure. As alloying elements are completely dissolved in the surface, the composition thus obtained is very uniform thin layer of cracking and spalling tendency is not so sensitive. The other notable feature is the use of laser power density is high (104-108 W/cm2). Melting depth by the laser power and exposure time to control, in the base metal surface to form a depth of 0.01 ~ 2mm of the alloy layer. As the cooling rate is high, so segregation is extremely small, and the grain refinement effect is remarkable. Laser alloying technique using cheap common materials can be useful for surface abrasion, corrosion, heat and other properties, from the surface can replace expensive overall alloy; and improved stainless steel, aluminum and titanium alloy wear resistance; Preparation of conventional metallurgical methods may not be some special materials, such as superconducting alloy, metal and glass. Surface hardening and ordinary arc and plasma spraying, laser alloying of the following advantages. The director in charge of led flash light will host the meeting.
Thin film can usually be pre-vapor deposition, vacuum sputtering, ion implantation by means of the system, and for the production of thick film presets. Can be used electroplating, spraying, rolling, diffusion (such as boronizing), pre-coated alloy powder or diaphragm and other methods. Rigid ion injection method is characterized by the same laser to melt the substrate surface while spraying people in the pool or hard alloy powder particles in order to achieve surface alloying. Laser gas alloying: refers to the appropriate atmosphere (nitrogen, carburizing atmosphere, etc.), the substrate using laser heating and melting the surface of the gas through the atmosphere, the reaction with the substrate, the thickness of the surface solid than those of normal processing to obtain the thickness of the reaction is much greater. It is mainly used in the A1, Ti and its alloys and other soft alloy substrate treatment, respectively, obtained TiN, TiC or Ti (C, N) compound layer such as surface hardness of up to l 000Hv more. Convection in the molten pool, the alloying elements can quickly penetrate the deeper parts. Laser surface alloying layer of tissue is characterized by alloying tissue heterogeneity. Includes three aspects: First, alloying heterogeneity within the pool, in its cross-section will be organized within the gradient; second alloy pool within the macro-organizational heterogeneity; third is covered in front of the large cyclical changes area alloying lap area. The workshop of green laser pointer is well organized.
Gradient in the organization, the common characteristics of complex organizations, there are three: flat crystal - crystal-like cells - cellular dendrite - dendrite; cellular crystal - cellular dendrite - dendrite; cellular dendrite - dendrite. Laser alloying of the macro-organizational heterogeneity is in some cases low magnification macro-organization of its non-uniform, which, from a physical metallurgy point of view, the formation of macroscopic tissue heterogeneity is mainly due to laser melting the alloy under not melt pool convection in the melt of the alloy elements within his mixing, the composition of the present macro-heterogeneity. Using laser surface alloying process can be in some cheap, poor surface properties of the system out of the base metal surface wear and corrosion, high temperature alloy surface, the overall alloy to replace expensive, saving precious materials and strategic materials, the Authority, the low-cost alloy for more widely used, thus greatly reducing costs. In addition, it can also be used to create a performance with the conventional metallurgical methods fundamentally different surface alloy, for example, foreign laser surface alloying process developed superconducting alloy MoN, MoC and V3Si, the surface of the metal used to make glass FeCrCB, NiNB and so on. The workshop of green laser pointer is under construction.
The stipulation of working instruction of green laser pointer
Computing, high-speed, large amount of information transmission, laser applications in the field of information storage, large capacity, high-density information storage become possible, as described in the textbook DVD is actually a magnetic media to store data, it can be dual layer double-sided, the run time of up to 484 min, the storage capacity of VCD several times or even several times, with up to 17GB. At present, the laser has become an important strategic weapons in the field of defense and military applications, such as laser ranging, laser radar, laser-guided, laser simulation technology. The dispatcher added 2 more workers to the night shift of led flash light .
Laser weapons, blinding laser weapons, laser interference weapons, laser anti-aircraft weapons, these weapons of modern warfare had a profound influence on the laser-guided bombs can quickly hit the target accurately. Ignite the nuclear fuel is a major topic of research scientists from various countries compete with a laser, is expected around 2010 with a laser to achieve fusion, the energy crisis is expected to be the fundamental solution. Teacher: the students before class to do a lot of preparation, reading a lot of relevant information, and certainly have a good harvest. I collected some of the video and laser data, please take a look at. The group leader is presenting the drawing of green laser pointer through the projector.
Through the learning of this lesson, we understand the characteristics and applications of the laser. Know that the laser is an artificially produced by coherent light, with a high degree of coherence, the use of this feature of the laser can be used in optical fiber communication, holographic; parallel to the laser is very good, able to accurately measure the distance and speed; laser The brightness is very high, can be used to control nuclear fusion, used as a "knife" in the medical surgery. Complete the P80, and practice the subject. Way of thinking is to solve the problem of the soul, is the fundamental of physics teaching; hands-participation in the knowledge discovery process is the key to fostering students' abilities to leave the ways of thinking and practice, physics teaching has become a river without water, without trees . The worker will operate as per the stipulation of working instruction of green laser pointer .
The training of student quality has become a Flower in the Mirror, in the water. Laser holographic photo film records the interference fringes of light, containing all the information of the subject reflected light, three-dimensional photo if the camera when the subject was blocking part of, by adjusting the line of sight can still see block part; photo was cut in half, and can still see the object from the half on, the photos only as an observation of the object window. The Holography use the good nature of the laser coherence. The inspector issued the qualification report for green laser pointer .
The power consumption of a pulsed laser for 2 × 103 W per second output 10 light pulses, each pulse duration of 10-8 s, to carry the energy of 0.2 J, the power of each pulse of 2 × 107W The laser converts electrical energy efficiency of the laser energy of 10-3. The targeted launch a very short laser pulse, measured transmit pulse and receive echo time interval, we can calculate the distance to the target, which is the use of directional laser. If measured by a laser pulse and received echo time interval of 0.1 s, can be obtained from the target of 1.5 × 107m. The workshop has the strict procedure of manufacturing green laser pointer .
Laser weapons, blinding laser weapons, laser interference weapons, laser anti-aircraft weapons, these weapons of modern warfare had a profound influence on the laser-guided bombs can quickly hit the target accurately. Ignite the nuclear fuel is a major topic of research scientists from various countries compete with a laser, is expected around 2010 with a laser to achieve fusion, the energy crisis is expected to be the fundamental solution. Teacher: the students before class to do a lot of preparation, reading a lot of relevant information, and certainly have a good harvest. I collected some of the video and laser data, please take a look at. The group leader is presenting the drawing of green laser pointer through the projector.
Through the learning of this lesson, we understand the characteristics and applications of the laser. Know that the laser is an artificially produced by coherent light, with a high degree of coherence, the use of this feature of the laser can be used in optical fiber communication, holographic; parallel to the laser is very good, able to accurately measure the distance and speed; laser The brightness is very high, can be used to control nuclear fusion, used as a "knife" in the medical surgery. Complete the P80, and practice the subject. Way of thinking is to solve the problem of the soul, is the fundamental of physics teaching; hands-participation in the knowledge discovery process is the key to fostering students' abilities to leave the ways of thinking and practice, physics teaching has become a river without water, without trees . The worker will operate as per the stipulation of working instruction of green laser pointer .
The training of student quality has become a Flower in the Mirror, in the water. Laser holographic photo film records the interference fringes of light, containing all the information of the subject reflected light, three-dimensional photo if the camera when the subject was blocking part of, by adjusting the line of sight can still see block part; photo was cut in half, and can still see the object from the half on, the photos only as an observation of the object window. The Holography use the good nature of the laser coherence. The inspector issued the qualification report for green laser pointer .
The power consumption of a pulsed laser for 2 × 103 W per second output 10 light pulses, each pulse duration of 10-8 s, to carry the energy of 0.2 J, the power of each pulse of 2 × 107W The laser converts electrical energy efficiency of the laser energy of 10-3. The targeted launch a very short laser pulse, measured transmit pulse and receive echo time interval, we can calculate the distance to the target, which is the use of directional laser. If measured by a laser pulse and received echo time interval of 0.1 s, can be obtained from the target of 1.5 × 107m. The workshop has the strict procedure of manufacturing green laser pointer .
The performance characteristics of green laser
Wuhan the Sangong photoelectric is National Science and Technology Commission, "science and technology enterprises technological innovation fund Project undertaking unit, the company has a number of long-term commitment to the laser industry experts and senior professional and technical personnel, and also has a number of national patents, and received two province Scientific and Technological Progress Award, and research organizations with close and extensive cooperation. Wuhan three workers photoelectric always stand in the forefront of laser technology and applications of the laser industry, revitalize national industry "as its mission, adhering to the" customer-centric and customer win-win "business philosophy, adhere to professional and practical "product design principles, dedicated to Chinese and foreign enterprises to provide a full range of laser applications solutions and sound system services, casting a brand new image of corporate integrity. Some of the paintings must be kept in dark places so that green laser pointer should be used with great care.
Able to adapt to the monocrystalline silicon, polycrystalline silicon, amorphous silicon cell scribing and dicing of silicon, germanium, gallium arsenide semiconductor material and cutting. Thick slices (such as AP 0.7mm monocrystalline polysilicon; 1.2mm amorphous silicon, etc.) can also be high-efficiency, high-speed, high-quality, low-current cutting. Maturity. Solar industry and widely used, and full practice test, summed up a set of optimization feasible process. Advanced. Recognized process to ensure maximum efficiency with the industry, the highest yield. Equipment performance indicators: the SDS50 type semiconductor laser scribing machine series equipment, work light pumped semiconductor laser sound and light modulation system, numerical control the X / Y-table, stepper motor drives, in the computer-controlled precision movement, dedicated control software, editing and revising of the program is simple and convenient, and real-time display of the trajectory. Some high power laser pointer has an obvious heating effect.
Workbench with double air positions vacuum adsorption system and bit alternating pairs of the T-type structure. The system uses the international popular modular design, key components are imported products. Reasonable structure, relatively light pump dicing machine faster, more precise, simple operation, a 24-hour long-term continuous work, the stable and reliable performance indicators, a higher degree of integration, better beam quality, run lower cost, maintenance-free longer and low failure rate, high rate of finished products, the wide range of applications in the solar industry, the high degree of recognition of the wide range of applications and users. The development of laser technology. It is the performance characteristics of green laser .
"Laser" is a paraphrase of the "LASER". LASER was a Light, amplification by stimulated emissi on of radiation to take the prefix a combination of technical terms in our country have been translated as "les", "optical maser", "light by stimulated emission amplifier". 1964, Academician Qian proposed name for the "laser", which reflects not only the scientific connotation of "stimulated emission", but also that it is a very strong light source, appropriate, expressive and simple, get the scientific community in China consensus and still in use. From the first laser in 1961 announced the successful development so far, the joint efforts in laser research, teaching, production and use of the unit. led flash light can display PPT in the computer.
China has formed a complete range of advanced level, and a wide range of applications of laser science and technology, and industrialization have made gratifying progress made positive contributions to China's science and technology, national economy and national defense construction, and in the international arena to win a place. .1957 Years of the early development of laser technology, Wang Daheng, in Changchun, China's first Institute of Optics - Chinese Academy of Sciences (Changchun) optical precision instruments, machinery Research Institute (referred to as "light machine"). Under the leadership of the older generation of experts, a group of young scientists grow rapidly, Deng Ximing is one of the prominent representatives. Xiao Luo, Townes, American physicist, well-known papers on laser principle as early as 1958 published soon. Insert green laser pointer into the interface of the computer case.
Able to adapt to the monocrystalline silicon, polycrystalline silicon, amorphous silicon cell scribing and dicing of silicon, germanium, gallium arsenide semiconductor material and cutting. Thick slices (such as AP 0.7mm monocrystalline polysilicon; 1.2mm amorphous silicon, etc.) can also be high-efficiency, high-speed, high-quality, low-current cutting. Maturity. Solar industry and widely used, and full practice test, summed up a set of optimization feasible process. Advanced. Recognized process to ensure maximum efficiency with the industry, the highest yield. Equipment performance indicators: the SDS50 type semiconductor laser scribing machine series equipment, work light pumped semiconductor laser sound and light modulation system, numerical control the X / Y-table, stepper motor drives, in the computer-controlled precision movement, dedicated control software, editing and revising of the program is simple and convenient, and real-time display of the trajectory. Some high power laser pointer has an obvious heating effect.
Workbench with double air positions vacuum adsorption system and bit alternating pairs of the T-type structure. The system uses the international popular modular design, key components are imported products. Reasonable structure, relatively light pump dicing machine faster, more precise, simple operation, a 24-hour long-term continuous work, the stable and reliable performance indicators, a higher degree of integration, better beam quality, run lower cost, maintenance-free longer and low failure rate, high rate of finished products, the wide range of applications in the solar industry, the high degree of recognition of the wide range of applications and users. The development of laser technology. It is the performance characteristics of green laser .
"Laser" is a paraphrase of the "LASER". LASER was a Light, amplification by stimulated emissi on of radiation to take the prefix a combination of technical terms in our country have been translated as "les", "optical maser", "light by stimulated emission amplifier". 1964, Academician Qian proposed name for the "laser", which reflects not only the scientific connotation of "stimulated emission", but also that it is a very strong light source, appropriate, expressive and simple, get the scientific community in China consensus and still in use. From the first laser in 1961 announced the successful development so far, the joint efforts in laser research, teaching, production and use of the unit. led flash light can display PPT in the computer.
China has formed a complete range of advanced level, and a wide range of applications of laser science and technology, and industrialization have made gratifying progress made positive contributions to China's science and technology, national economy and national defense construction, and in the international arena to win a place. .1957 Years of the early development of laser technology, Wang Daheng, in Changchun, China's first Institute of Optics - Chinese Academy of Sciences (Changchun) optical precision instruments, machinery Research Institute (referred to as "light machine"). Under the leadership of the older generation of experts, a group of young scientists grow rapidly, Deng Ximing is one of the prominent representatives. Xiao Luo, Townes, American physicist, well-known papers on laser principle as early as 1958 published soon. Insert green laser pointer into the interface of the computer case.
The green laser beam green laser is more expensive
Another classification is a single function and multifunction. The printer now can be multi-functional focus with what fax, scan, plug a variety of digital memory cards. However, the use of fill ink or CISS best single machine as well for easy modification and maintenance. Understanding of classification, or easy to select models. Some of the features in the printer of the manufacturers. Since it is optional printer, knows in advance that some of the features optional targeted. Print head. The first is to recognize the nozzle. The inkjet ink-jet, the first spray, the spray word, indicating two things: First, the print used is in fact spray, spray - is not directly touch the paper. The operation of green laser pointer is easy and the use is very convenient.
Instructions from the nozzle (also called the print head) of the nozzle spray nozzle is the key to the printer capable of printing and print quality is good or bad, of course, the ink is also important, but only want to nozzle, from this point that, then the nozzle is the printer's CPU. Nozzle when the spray, when to stop spraying when the spray color, need to rely on the circuit to drive it, so there are circuits on the nozzle, this circuit printer board connected. In order to facilitate connection, the nozzle above, there is a circuit board. If the nozzle is fixed in the printer, the nozzle of the circuit board and printer using the cable plug-in, that is, the printer circuit board through the cable into the slot of the nozzle circuit board. It is the multiple function laser pointer .
If the nozzle can be taken down the nozzle circuit board and the printer uses the spring-contact, both the printer circuit board in front of the nozzle position is a spring contact nozzle board can be regular contact. Piezoelectric nozzle. Epson (EPSON) uses a Micro Piezo print head technology, voltage change, the crystal to vibrate to spray ink. Many tiny piezoelectric ceramic placed near the print head nozzles, piezoelectric ceramic in the altered role of the voltage across the stretch or contraction, the stretching vibration of the piezoelectric ceramics with the image when the image data voltage is applied on the piezoelectric ceramic information voltage changes. The first generation green laser pointer is a kind of laser pointer.
The ink in the steady state under normal temperature and pressure evenly and accurately spray ink, and effective control of droplet size, higher accuracy and resolution of color printout. Piezoelectric ceramic is timely, moderate shrinkage deformation is able to accurately print the core. Micro Piezo technology in front of the ink jet operation, the piezoelectric element, the first signal under the control of a slight contraction; components and then produce a larger extension of the droplet launch of the nozzle; moment, soon exited the nozzle in droplet components will shrink, neatly retracted liquid ink from the nozzle exit. In this way, the surface of the droplet precise control of spray droplet has the perfect shape and in the right direction. The green laser beam green laser is more expensive.
Of course, these are in theory, the entire injection process can not see, but by the above principle, the main use of micro Piezo print head technology ink without heating to emit, corrosion of the nozzle components is small, slow aging, the ink is no need heating also makes the color reproduction is better. The piezoelectric inkjet technology also has the regular shape of the dots, no sputtering, easy to control ink dot size and injection speed, accurate positioning and nozzle life expectancy, etc. Generally speaking, high-quality print images. Another point is that you can choose to use more of the chemical composition of the ink. However, the high cost of piezoelectric inkjet print head, so all the printheads and ink cartridges for the separation of structure, the cartridge above, without a nozzle, so the price of ink cartridges is relatively low. The receiver of the wireless presenter led flash light is small, exquisite and aesthetic.
Instructions from the nozzle (also called the print head) of the nozzle spray nozzle is the key to the printer capable of printing and print quality is good or bad, of course, the ink is also important, but only want to nozzle, from this point that, then the nozzle is the printer's CPU. Nozzle when the spray, when to stop spraying when the spray color, need to rely on the circuit to drive it, so there are circuits on the nozzle, this circuit printer board connected. In order to facilitate connection, the nozzle above, there is a circuit board. If the nozzle is fixed in the printer, the nozzle of the circuit board and printer using the cable plug-in, that is, the printer circuit board through the cable into the slot of the nozzle circuit board. It is the multiple function laser pointer .
If the nozzle can be taken down the nozzle circuit board and the printer uses the spring-contact, both the printer circuit board in front of the nozzle position is a spring contact nozzle board can be regular contact. Piezoelectric nozzle. Epson (EPSON) uses a Micro Piezo print head technology, voltage change, the crystal to vibrate to spray ink. Many tiny piezoelectric ceramic placed near the print head nozzles, piezoelectric ceramic in the altered role of the voltage across the stretch or contraction, the stretching vibration of the piezoelectric ceramics with the image when the image data voltage is applied on the piezoelectric ceramic information voltage changes. The first generation green laser pointer is a kind of laser pointer.
The ink in the steady state under normal temperature and pressure evenly and accurately spray ink, and effective control of droplet size, higher accuracy and resolution of color printout. Piezoelectric ceramic is timely, moderate shrinkage deformation is able to accurately print the core. Micro Piezo technology in front of the ink jet operation, the piezoelectric element, the first signal under the control of a slight contraction; components and then produce a larger extension of the droplet launch of the nozzle; moment, soon exited the nozzle in droplet components will shrink, neatly retracted liquid ink from the nozzle exit. In this way, the surface of the droplet precise control of spray droplet has the perfect shape and in the right direction. The green laser beam green laser is more expensive.
Of course, these are in theory, the entire injection process can not see, but by the above principle, the main use of micro Piezo print head technology ink without heating to emit, corrosion of the nozzle components is small, slow aging, the ink is no need heating also makes the color reproduction is better. The piezoelectric inkjet technology also has the regular shape of the dots, no sputtering, easy to control ink dot size and injection speed, accurate positioning and nozzle life expectancy, etc. Generally speaking, high-quality print images. Another point is that you can choose to use more of the chemical composition of the ink. However, the high cost of piezoelectric inkjet print head, so all the printheads and ink cartridges for the separation of structure, the cartridge above, without a nozzle, so the price of ink cartridges is relatively low. The receiver of the wireless presenter led flash light is small, exquisite and aesthetic.
Tuesday, May 22, 2012
Green laser pointer helps to improve working efficiency
Near-infrared semiconductor laser diodes is mainly used for optical fiber communications and solid-state laser as the pump source (flashlamp-pumped source alternative). 1.3m and 1.55m in the near-infrared semiconductor laser diode after the commercialization of its development momentum has been greatly affected, even to stop the development of signs. With the short-range local area network and diode pumped solid state laser's rapid development, the emergence of new development. green laser pointer could be used in exhibition institutions.Current research and development work focused on a single frequency, mode stability, and increase the output power and so on. Near-infrared light-emitting diodes are ultra-light-emitting diodes and resonant cavity light emitting diodes. Ultra-light-emitting diode is the best choice FOG light, compared with the general light-emitting diodes can provide higher output power and a relatively narrow emission spectra. At present, 50mA operating current, single-tube study of ultra-radiation output power level of up to 50MW, the narrowest spectral width of 15nm. led flash light could be used in training organizations.Resonant cavity light emitting diode is a promising light-emitting diode, the experimental and theoretical high-efficiency than conventional light-emitting diodes 5 to 10 times. 1.3m and 1.55m near-infrared semiconductor lasers and light emitting diode is the current communication system, high-speed optical fiber communication system is an important optical components, has become a wide research and development of the light source. Japan's NEC has developed a single chip to create a different emission wavelength near-infrared laser diode, which can greatly reduce the use of multi-wavelength long-distance communications equipment prices. In recent years, overseas and have developed a semiconductor soliton lasers, quantum-well laser line or point and vertical-cavity surface-emitting lasers and other new semiconductor laser diode. Laser technology is a cutting-edge scientific and technological development are indispensable pillar. As the laser photoelectron leading product development, through the principle of the four changes, the increasing size smaller, increasing power, reliability and power has been greatly improved. Semiconductor diode lasers and solid-state laser technology and development is very rapid, the most prominent development is the solid-state. green laser pointer could help to solve difficult problems in physical application.Today, solid-state laser average output power from 100 W to the kilowatt level. The power semiconductor lasers have greatly improved, and its structure and other properties are also undergoing major changes. At the same time, also developed a new high practical value and broadband wavelength tunable lasers, including the human eye without injury to 1.54m and 2m of the laser, blue laser and X-ray lasers. Fiber optical communication with the evolving development of various types of fiber structures and supports the development of optical communication industry. Currently, single-fiber transmission of the amount of information has reached the one trillion. Optical fiber as a communication and information transmission medium, its dispersion and loss will directly affect the transmission capacity of communication systems and relay distance, while the conventional single-mode fiber can not meet the requirements of next-generation communications technology, optical technology, there has been so new development. green laser pointer helps to improve working efficiency. So far, the fiber has been experienced by the short wavelength (0.85m) to the long-wavelength (1.3 ~ 1.55m), the multi-mode to single-mode fiber and specialty fiber development process, and developed a dispersion shifted fiber, non-zero dispersion fiber and dispersion compensation fiber.
Flat panel display (FPD) technologies include liquid crystal display (LCD), plasma display (PDP), electroluminescent display (EL), vacuum fluorescent display (VFD) and light-emitting diode display (LED), etc., in addition to a wide range of applications in the civilian sphere addition, in the virtual display, high-definition display, language and pattern recognition applications such as military applications.
Flat panel display (FPD) technologies include liquid crystal display (LCD), plasma display (PDP), electroluminescent display (EL), vacuum fluorescent display (VFD) and light-emitting diode display (LED), etc., in addition to a wide range of applications in the civilian sphere addition, in the virtual display, high-definition display, language and pattern recognition applications such as military applications.
A brief introduction of green laser pointer
Rare earth in the laser crystal laser crystal is composed of the crystal matrix and the active ion. Laser crystal laser performance and crystal matrix, activation of the ion features a great relationship. Known laser crystal can be roughly divided into fluoride crystals, the three categories of oxysalt crystal and oxide crystals. Active ions can be divided into transition metal ions, rare earth ions and actinide ions. Known for about 320 kinds of laser crystal, about 290 kinds of mixed rare earth as the active ion. Seen rare earth an important role in the development of the laser crystal materials. The customer wants to take some pictures for this kind of green laser pointer .
11 trivalent ion Ce, Pr, Nd, Sm, Eu and Tb, Dy and Ho, and Er and Tm, and Yb, and Sm, Dy and Tm three divalent ions in the rare earth elements in the laser output. The laser properties of rare earth is generated due to the 4f electrons of rare earth ions in the transition between different energy levels. As many rare earth ions have abundant energy levels and transitions of 4f electrons, the rare earth become indispensable for the activation of ions in the laser crystal, high-tech superior performance of high power LD pumped, tunable wavelength rare earth-doped laser crystals. High-power rare earth-doped laser crystals there is a neodymium doped yttrium aluminum garnet (Nd: YAG), neodymium-doped aluminum acid yttrium (Nd: YAP), aluminum doped gadolinium the Jia garnet (Nd: GGG) and neodymium-doped aluminum magnesium lanthanum ( Nd: LMA). The battery of this kind of led flash light has the leakage-proof design.
Among them, the Nd: YAG, the most important and most widely, the largest amount. Countries have already put into production in the United States of Nd: YAG crystal has been the commercialization of new product quality and stability, and occupy the international most of the market. Tunable laser crystal is equally compelling. Ce ions broadband transitions from the Ce: YLF and Ce: of LaF3 crystal tunable UV laser. Currently the most effective and tunable UV laser crystal Ce: LiCAF, Ce: LiSAF. For LD-pumped laser crystal Nd: YVO 4, Nd: YAG and Nd: YLF, etc., other suitable pump crystal there of Yb: YAG and so on. China's YVO 4, Nd: YVO 4 crystal have been renowned international market, it is estimated that 1/3 of its products now account for the international market. The material acceptance of green laser pointer should be in accordance with the stipulation.
The rare earth active ion Nd ions, it is an output wavelength of 1.06μm. Over the years people have been carrying out exploratory work of the new wavelength of the laser crystal. One of the more successful and practical application of Er and Ho laser crystal. These crystals the output wavelength eye-safe, atmospheric transport, battlefield smoke penetration ability, confidentiality, suitable for military use. And the wavelength easily absorbed by water is more suitable for laser medical treatment, in terms of surface dehydration and biological engineering, will also receive applications. Our ability to Ho: Cr: Tm: YAG and Er: YAG and Ho: Er: Tm: YLF has a small batch trial, but the end of the formation of bulk products. It is a brief introduction of green laser pointer .
Prospects for the development of rare earth rare earth in the crystal Nd: YAG crystal with good optical homogeneity, high mechanical strength, stable physical and chemical properties, high thermal conductivity, good laser performance and mature growth technology advantages. It is because of the Nd: YAG crystal with the excellent performance and can be at room temperature, pulse and continuous operation of a variety of ways, so it is widely used in military, industrial and medical, is the solid-state laser the largest amount of laser crystal material. In the military aspects of Nd: YAG crystal is the most widely used solid-state laser working substance, is the backbone of the military solid-state laser technology. More than 90 percent of military solid-state lasers based on Nd: YAG laser crystal as the working substance. The common laser ray color of green laser pointer contains green, red and blue.
11 trivalent ion Ce, Pr, Nd, Sm, Eu and Tb, Dy and Ho, and Er and Tm, and Yb, and Sm, Dy and Tm three divalent ions in the rare earth elements in the laser output. The laser properties of rare earth is generated due to the 4f electrons of rare earth ions in the transition between different energy levels. As many rare earth ions have abundant energy levels and transitions of 4f electrons, the rare earth become indispensable for the activation of ions in the laser crystal, high-tech superior performance of high power LD pumped, tunable wavelength rare earth-doped laser crystals. High-power rare earth-doped laser crystals there is a neodymium doped yttrium aluminum garnet (Nd: YAG), neodymium-doped aluminum acid yttrium (Nd: YAP), aluminum doped gadolinium the Jia garnet (Nd: GGG) and neodymium-doped aluminum magnesium lanthanum ( Nd: LMA). The battery of this kind of led flash light has the leakage-proof design.
Among them, the Nd: YAG, the most important and most widely, the largest amount. Countries have already put into production in the United States of Nd: YAG crystal has been the commercialization of new product quality and stability, and occupy the international most of the market. Tunable laser crystal is equally compelling. Ce ions broadband transitions from the Ce: YLF and Ce: of LaF3 crystal tunable UV laser. Currently the most effective and tunable UV laser crystal Ce: LiCAF, Ce: LiSAF. For LD-pumped laser crystal Nd: YVO 4, Nd: YAG and Nd: YLF, etc., other suitable pump crystal there of Yb: YAG and so on. China's YVO 4, Nd: YVO 4 crystal have been renowned international market, it is estimated that 1/3 of its products now account for the international market. The material acceptance of green laser pointer should be in accordance with the stipulation.
The rare earth active ion Nd ions, it is an output wavelength of 1.06μm. Over the years people have been carrying out exploratory work of the new wavelength of the laser crystal. One of the more successful and practical application of Er and Ho laser crystal. These crystals the output wavelength eye-safe, atmospheric transport, battlefield smoke penetration ability, confidentiality, suitable for military use. And the wavelength easily absorbed by water is more suitable for laser medical treatment, in terms of surface dehydration and biological engineering, will also receive applications. Our ability to Ho: Cr: Tm: YAG and Er: YAG and Ho: Er: Tm: YLF has a small batch trial, but the end of the formation of bulk products. It is a brief introduction of green laser pointer .
Prospects for the development of rare earth rare earth in the crystal Nd: YAG crystal with good optical homogeneity, high mechanical strength, stable physical and chemical properties, high thermal conductivity, good laser performance and mature growth technology advantages. It is because of the Nd: YAG crystal with the excellent performance and can be at room temperature, pulse and continuous operation of a variety of ways, so it is widely used in military, industrial and medical, is the solid-state laser the largest amount of laser crystal material. In the military aspects of Nd: YAG crystal is the most widely used solid-state laser working substance, is the backbone of the military solid-state laser technology. More than 90 percent of military solid-state lasers based on Nd: YAG laser crystal as the working substance. The common laser ray color of green laser pointer contains green, red and blue.
The technical problem analysis of led flash light
Today, the rapid development of science and technology, medicine has also been a surprise to the human one, excimer laser surgery worldwide, 40 million patients with myopia of the same choice. But recently, many patients ask to question the side effects of excimer laser surgery. So what exactly does the existence of this side effect? New Vision Eye Hospital following Quanzhou "Sino-US cooperation in height, correction of high myopia clinical base," chief expert Professor Cai Guoling, combined with their more than 36,000 cases of laser treatment of myopia surgery experience for everyone to do the next detail. The expert group of green laser pointer will carry out the technical problem analysis of led flash light .
Excimer laser treatment of myopia correction is the ideal high-tech projects, the set of computers, lasers, biomedical engineering technology, and the use of excimer laser beam energy is high, penetrating very weak, cutting accuracy and reproducibility of the characteristics of accurately cutting the corneal layer of the organization, reducing refraction in order to achieve the purpose of correction of myopia, the operation of the surrounding tissue and no effect on the deep structure of the eye, with the whole Qi Guangjie cutting, high precision, forecasting strong, good stability, great complications less so, in patients with surgery without pain, without hospitalization, does not affect the normal work and life, is the ideal treatment of myopia surgery program. Already has 40 million myopia surgically remove the glasses. A well-known health magazine reporter had the "excimer laser have side effects?" The technical problem analysis of green laser pointer will be finished in the afternoon.
Interviewed Professor Cai Guoling, Professor Cai Guoling replied: "No surgery is not an absolute one hundred percent secure, even if the correction as Lasik surgery, already have very high security, and accuracy, there are inevitably has its dangers, but since the new vision of Quanzhou Eye Hospital to build hospital for treatment of myopia has nearly 40,000 cases of myopia surgery success stories record: never in one case of blindness caused by the example of serious complications is 0! and most of cure or recovery with the wound to improve, and only a few more some degree of visual effect, so patients must have a reasonable expectation of surgery, and risk awareness. " After the acceptance, the summary meeting of green laser pointer will be held.
Some patients appear to do the side effects of excimer laser? Photophobia: after surgery three to six months, increased sensitivity to light, but many will gradually disappear after 6 months, very few cases will continue. Correction of deficiencies or over-correction: residual myopia after surgery, or more than the expected degree of correction into hyperopia, is the most common side effects, as the case may be re-stabilized laser correction degree. Glare or double vision: early surgery is more common, especially at night will have a pupil larger than the majority will gradually disappear, only a small part of it will continue. Corneal flap folds or displacement: only in LASIK, may be due to trauma, can cause irregular astigmatism affect vision, surgery may be re-paved. Epidermal healing: more common in PRK, contact lenses can be therapeutic and artificial tears to help recovery. The company will make the improvement actions of green laser pointer in the summary meeting of green laser pointer.
Corneal opacity: only occur after PRK, with the higher degree of personal physical fitness and a positive correlation correction, 1-3 months after the most obvious point of steroid eye drops to be controlled, then most will slowly fade. Surgery complications: corneal flap cutting is bad in most, if not completely cut or cutting is not smooth; reset as long as the corneal flap can be restored, three months after reoperation. Impurities under the skin flap or invasion: a minor who does not affect vision, severe corneal flap to be opened to remove. Infection: a result of surgery or postoperative dirty, so that the wound to bacteria infection, the probability is very low, as long as early detection, most available medications. Some foreign experts of green laser pointer will attend the meeting.
Excimer laser treatment of myopia correction is the ideal high-tech projects, the set of computers, lasers, biomedical engineering technology, and the use of excimer laser beam energy is high, penetrating very weak, cutting accuracy and reproducibility of the characteristics of accurately cutting the corneal layer of the organization, reducing refraction in order to achieve the purpose of correction of myopia, the operation of the surrounding tissue and no effect on the deep structure of the eye, with the whole Qi Guangjie cutting, high precision, forecasting strong, good stability, great complications less so, in patients with surgery without pain, without hospitalization, does not affect the normal work and life, is the ideal treatment of myopia surgery program. Already has 40 million myopia surgically remove the glasses. A well-known health magazine reporter had the "excimer laser have side effects?" The technical problem analysis of green laser pointer will be finished in the afternoon.
Interviewed Professor Cai Guoling, Professor Cai Guoling replied: "No surgery is not an absolute one hundred percent secure, even if the correction as Lasik surgery, already have very high security, and accuracy, there are inevitably has its dangers, but since the new vision of Quanzhou Eye Hospital to build hospital for treatment of myopia has nearly 40,000 cases of myopia surgery success stories record: never in one case of blindness caused by the example of serious complications is 0! and most of cure or recovery with the wound to improve, and only a few more some degree of visual effect, so patients must have a reasonable expectation of surgery, and risk awareness. " After the acceptance, the summary meeting of green laser pointer will be held.
Some patients appear to do the side effects of excimer laser? Photophobia: after surgery three to six months, increased sensitivity to light, but many will gradually disappear after 6 months, very few cases will continue. Correction of deficiencies or over-correction: residual myopia after surgery, or more than the expected degree of correction into hyperopia, is the most common side effects, as the case may be re-stabilized laser correction degree. Glare or double vision: early surgery is more common, especially at night will have a pupil larger than the majority will gradually disappear, only a small part of it will continue. Corneal flap folds or displacement: only in LASIK, may be due to trauma, can cause irregular astigmatism affect vision, surgery may be re-paved. Epidermal healing: more common in PRK, contact lenses can be therapeutic and artificial tears to help recovery. The company will make the improvement actions of green laser pointer in the summary meeting of green laser pointer.
Corneal opacity: only occur after PRK, with the higher degree of personal physical fitness and a positive correlation correction, 1-3 months after the most obvious point of steroid eye drops to be controlled, then most will slowly fade. Surgery complications: corneal flap cutting is bad in most, if not completely cut or cutting is not smooth; reset as long as the corneal flap can be restored, three months after reoperation. Impurities under the skin flap or invasion: a minor who does not affect vision, severe corneal flap to be opened to remove. Infection: a result of surgery or postoperative dirty, so that the wound to bacteria infection, the probability is very low, as long as early detection, most available medications. Some foreign experts of green laser pointer will attend the meeting.
The file management of led flash light is of vital importance
In the above parameters, the corneal flap thickness is a variable, the preoperative estimate to be fully considered. The results of ultrasonic corneal thickness measurement error is greater, usually three times the data close to the continuous measurement, (standard deviation ± 3 μm) can be determined. Topography examination: Keratoconus is a corneal refractive excimer laser surgery contraindications. Type of clinical signs and symptoms of keratoconus because obviously, no more difficult to diagnose. Subclinical keratoconus corneal excimer laser surgery is the focus before the screening, although no uniform standards, but for the local central corneal curvature greater than the 47D, with a large degree of apparent asymmetry astigmatism, need to be cautious identification. The document of green laser pointer should be archived after being reviewed.
Keratoconus is very similar to the early progress of myopia development process, therefore, the above-mentioned characteristics of myopia or astigmatism, corneal topography with progressive deepening, the best observation, do not rush surgery. Reflect the curvature of the cornea after corneal topography and corneal refractive power. Some type of topographer and still identify as dark as the pupil diameter, corneal diameter, corneal thickness. Preoperative analysis of collected data can determine the ease of operation, such as flat-steep cornea and corneal free flap and button holes occur the higher the probability, according to the form of corneal surgery to choose the right ring to reduce the negative pressure of the corneal flap complications. Scotopic pupil size adjusted according to the cutting zone diameter, to minimize postoperative glare and halos at night. The file management of led flash light is of vital importance.
Adjusted according to the diameter lamellar corneal knife stopper to prevent stalls and other free flap occurred. Diopter check: As preoperative examination to determine the refractive error is a prerequisite for successful surgical treatment, preoperative refractive error the smaller the better, so in order to ensure the accuracy of the expected results after surgery. Ciliary muscle paralysis for the need to do retinoscopy after refractive examination there are different views. The author argues that the determination should be based on objective refractive retinoscopy and subjective refraction method of combining, full paralysis of ciliary muscle that is done after retinoscopy, supplemented by comprehensive optometry refractor or hand lens to determine the effect of refraction rule out regulation. Be adjusted after the resumption, under physiological conditions to do it again the main sleep optometry, and ultimately to the best corrected visual acuity with lenses designed for the surgery based on. The file management of green laser pointer is good for the document management of green laser pointer workshop.
To ensure that the inspection reduce human error and eliminate subjective factors examiner, preferably cross-examination, that objective retinoscopy and subjective refraction implemented by different examiners. Our approach is dilated with amide compound, 5 minute intervals for 4 times, 20 minutes after the examination after pupil fully dilated, so the computer optometry, then manual retinoscopy, refraction based on test results plus lenses. Ciliary muscle in future be fully restored after the call the shots felt optometry, as a result of this examination the physiological state of refraction, best corrected visual acuity patients often become the basis for their evaluation of surgical results. Fundus examination: Since the end of high myopia often associated with retinal degeneration, tear, and sometimes even the existence of retinal detachment and retinal hemorrhage. Different green laser pointer manufactured by different companies have different qualities.
Fundus examination is a necessary check items. Inspection should be fully dilated pupil, it is recommended to use an indirect binocular ophthalmoscope, when more severe retinal degeneration that area, dry holes, the limitations of the claim with no vitreous traction from retinal light can advance the treatment of retinal laser photocoagulation , usually 2 weeks after photocoagulation pigment appeared, closed hole, retinal calm down even after the line excimer laser treatment. After a systemic disease investigation and a detailed eye examination, on a comprehensive analysis of the data collected to determine. Can I do laser surgery, select the appropriate surgical procedures. Different green laser pointer of different prices have different prices.
Keratoconus is very similar to the early progress of myopia development process, therefore, the above-mentioned characteristics of myopia or astigmatism, corneal topography with progressive deepening, the best observation, do not rush surgery. Reflect the curvature of the cornea after corneal topography and corneal refractive power. Some type of topographer and still identify as dark as the pupil diameter, corneal diameter, corneal thickness. Preoperative analysis of collected data can determine the ease of operation, such as flat-steep cornea and corneal free flap and button holes occur the higher the probability, according to the form of corneal surgery to choose the right ring to reduce the negative pressure of the corneal flap complications. Scotopic pupil size adjusted according to the cutting zone diameter, to minimize postoperative glare and halos at night. The file management of led flash light is of vital importance.
Adjusted according to the diameter lamellar corneal knife stopper to prevent stalls and other free flap occurred. Diopter check: As preoperative examination to determine the refractive error is a prerequisite for successful surgical treatment, preoperative refractive error the smaller the better, so in order to ensure the accuracy of the expected results after surgery. Ciliary muscle paralysis for the need to do retinoscopy after refractive examination there are different views. The author argues that the determination should be based on objective refractive retinoscopy and subjective refraction method of combining, full paralysis of ciliary muscle that is done after retinoscopy, supplemented by comprehensive optometry refractor or hand lens to determine the effect of refraction rule out regulation. Be adjusted after the resumption, under physiological conditions to do it again the main sleep optometry, and ultimately to the best corrected visual acuity with lenses designed for the surgery based on. The file management of green laser pointer is good for the document management of green laser pointer workshop.
To ensure that the inspection reduce human error and eliminate subjective factors examiner, preferably cross-examination, that objective retinoscopy and subjective refraction implemented by different examiners. Our approach is dilated with amide compound, 5 minute intervals for 4 times, 20 minutes after the examination after pupil fully dilated, so the computer optometry, then manual retinoscopy, refraction based on test results plus lenses. Ciliary muscle in future be fully restored after the call the shots felt optometry, as a result of this examination the physiological state of refraction, best corrected visual acuity patients often become the basis for their evaluation of surgical results. Fundus examination: Since the end of high myopia often associated with retinal degeneration, tear, and sometimes even the existence of retinal detachment and retinal hemorrhage. Different green laser pointer manufactured by different companies have different qualities.
Fundus examination is a necessary check items. Inspection should be fully dilated pupil, it is recommended to use an indirect binocular ophthalmoscope, when more severe retinal degeneration that area, dry holes, the limitations of the claim with no vitreous traction from retinal light can advance the treatment of retinal laser photocoagulation , usually 2 weeks after photocoagulation pigment appeared, closed hole, retinal calm down even after the line excimer laser treatment. After a systemic disease investigation and a detailed eye examination, on a comprehensive analysis of the data collected to determine. Can I do laser surgery, select the appropriate surgical procedures. Different green laser pointer of different prices have different prices.
The infrared defect of led flash light
One of the differences, there is a blue filter colors in the infrared part of the waveform, that is, wavelength 780 ~ 1000 nm, peak of the condition is indeed the reduction of down, closer to AM1.5G spectrum (yellow waveform) Company name information photoelectron can produce 8 photoelectric effect depends on photoelectron energy is greater than the surface of the object of electronic work function A0. Different substances have different work function, that every object has a corresponding optical frequency threshold, called the red limit of frequency or wavelength limit. 2.4GHz technology of green laser pointer contains advantages of anti-interference, transmission speed, transmission distance and so on.Red light at frequencies below the frequency limit, the photon energy is not enough to escape the object of the e, which is less than the limit frequency of the incident light red, light intensity and then it does not produce large photoelectron emission; the other hand, the incident light frequency is higher than the red limit frequency, even low light, a photoelectron will be shot. 1, outside the photoelectric effect, in the light under the action of objects within the launch of electronic escape out of the surface photoelectric effect phenomenon known as the outside. Electrons emitted to the outside called a photoelectron. Based optoelectronic devices outside of the photoelectric effect photoelectric tubes, photomultiplier tubes.The 2.4GHz technology applied by green laser pointer is widely used currently. (2) of the photoelectric effect when light shines on an object, so that the object of the resistivity ρ changes, or photo-electromotive force generated within the phenomenon called the photoelectric effect, which occurred in the semiconductor. According to different works, within the photoelectric effect is divided into photoconductive effect and photovoltaic effect into two categories: (1) photoconductive effect in the influence of light, electron absorbs photon energy from the bonding state of transition to a free state, which leads to material conductivity changes, a phenomenon known as the photoconductive effect. Optoelectronic devices based on this effect have photosensitive resistance. 2) the photovoltaic effect in the light so that objects can be produced under the direction of the electromotive force of a certain phenomenon called the photovoltaic effect. The 2.4GHz wireless linking technology could overcome the infrared defect of led flash light.Optoelectronic devices based on the effect of light cells and photosensitive diodes, transistors. 1 2 hν = mυ0 + A0 2 Company Information 9 QE measuring instrument measuring principle Definition: Number of collected electrons per incident photon at a specific wavelength in percent units definition: incident solar photons of a specific wavelength generated by electronic ( ratio) as a percentage of units + N, hν = hc / λ n, e-IPCE = n / N (%) Company information 10 History of the development of laser invention of laser science and technology in the 20th century, a major achievement. It allows people to drive finally have the ability to measure very small number of very, very chaotic movement of molecules and atoms of light-emitting process, resulting in generation, coherent light amplification ability. The rise of science and technology of laser light to the understanding and use of human has reached a new level.The 2.4GHz wireless linking technology helps green laser pointer to cross through obstruction. The birth of the history of lasers can be divided into several stages, one of which Einstein's 1916 concept of stimulated emission is an important theoretical basis. This theory that the particles of matter in high energy state by an energy equal to the energy difference between two energy levels of photons role will shift to the lower state, and produce a second photon, with the first photon emitted at the same time, this is the stimulated emission.
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