excimer laser for the treatment of myopia

According to statistics, in 1986, 21 million U.S. hospital surgeries have been 2.5 million cases in the use of CO2 laser scalpel, 12% of the total operation, the U.S. National 2 / 3 of outpatient has laser medical equipment. In the U.S. the new laser medical equipment and medical technology continues to occur, for example, disc 20-25 million U.S. patients each year, of which 10-20% can be removed with a laser; the United States, 14 million people who want to remove the tattoo, the United States each year 450,000 patients diagnosed with kidney stones, of which 1 / 3 or with endoscopic laser lithotripsy technology, characterization of the cornea with the excimer laser for vision correction has been made to more than 20,000 cases, the United States in 1995 FDA approved for use, expected in 1996 may have 200-300 units sold in the U.S. excimer laser for the treatment of myopia, the output value of about 8000-12000 million dollars; in 1995 to promote the CO2 laser cosmetic surgery, especially to remove wrinkles surgery are welcome to promote the cause of these two operations in 1995 increased the income of medical lasers. The quality of laser pointer has been improved more after the technical problem was tackled.
This method is called to remove wrinkles and then smooth the skin laser therapy, the price of each treatment in the United States from $ 800 to $ 4,500 (not including insurance premiums), which estimated the market size of the skin and then smooth up to 1.5 billion dollar, which has attracted at least eight companies for the smooth skin and then release CO2 laser laser therapy system. It is predicted that the first generation of soft-tissue dental laser machine in the early nineties up to several thousand units sold, sales of $ 090 million, the second generation of hard-tissue dental laser machine may replace most of the mechanical dental drill market. In early 1994, the Japanese optoelectronics industry in Japan Technology Promotion Association announced the laser - optoelectronics industry production value in 1992-1993, here only the situation in 1993. 1993 Japanese optoelectronics industry output value of 3.785 trillion yen forecast (If 110 Japan: 1 U.S. dollar terms, should be $ 34.4 billion), compared with 3.5066 trillion yen in 1992 rose by 7.9%. Opto-electronics industry, including optoelectronic devices and optoelectronic components in two parts, which optoelectronic devices is 2.8086 trillion yen (about 255 million), optoelectronic components for the 976.4 billion yen (about $ 8.9 billion). The disassembly procedure of laser pointer is easy actually.

the semiconductor laser diode chip

Laser technology is the laser display industry, one of the main support conditions. This requires us to strengthen the development of laser technology, especially in laser technology breakthrough, because the laser will have a direct effect of the decision of the laser display. At present, China is still relatively lacking in this respect, any course is the main imports. Laser technology is another major investment in the support conditions. Laser display industry is a relatively long process of industrial development, long-term R & D investment is that many companies can not afford, so need the government investment in research funds for research and development. The only way to ensure that the field of laser technology research to move forward quickly. Laser display industry chain is very long, from the semiconductor laser diode chip R & D R & D production and then laser TV development, production spread to microelectronics, optical electronics, white goods, black appliances fields. Downstream industries which are the end product manufacturing industry (such as monitors, projectors and other equipment of the production), the upstream industry with the production of semiconductor devices. Greater efforts to promote the laser display industry will be able to bring a lot of high-tech industry. A new warehouse of laser pointer is under the construction. The production of laser pointer needs the guide of technical theory of laser pointer . It is reported that by 2000 the three major U.S. car companies 50% of the resistance spot welding line will be replaced by laser-welding production lines. 1995 World sales of laser processing system to account for the 1950 units, 640 units of which the United States, accounting for 34%. Mainly used in laser processing CO2 lasers and Nd: YAG laser. 58% in the U.S. for CO2 laser cutting, welding for 12%, 11% for the mark, 1% for the heat treatment, the other is 18%; Nd: YAG lasers for welding 24%, 39% for the mark, 7 % used for cutting, 18% for micro-machining, 3% for drilling, other 9%. In the medical laser, the United States is a world leader. Laser medical equipment is widely available not only in the United States, and a large number of exports, the United States, laser medical equipment by the U.S. Food and Drug Administration (FDA) unified management, and only approved registered before use and production, thus ensuring the products of laser medical equipment quality and reliability and security. The technical problems of laser pointer have been solved.

Carbon monoxide laser power

laser companies: Coherent, Spectra Physics Inc., United Technology (URTC) company, PRC company, Combustion Engineering, Lumonics Corporation, Synrad company, Marted Lasers company, Electrox Company and ESI Corporation. Coherent and Spectra-Physics laser two largest U.S. companies, accounting for U.S. laser company more than 40% of total sales. The technology is the newly rising technology of laser pointer .
Spectra-Physics Department of the company's industrial laser of high power CO2 lasers equity Rofin-Sinar in Germany has acquired the company, mainly produces 1.5kW-6kW cross-flow CO2 laser. Joint technology company mainly produces iodine laser wavelength of 1.3 microns and solid-state laser diode excitation UV excimer lasers. Now more than carbon dioxide laser power of 500W, and in theory up to 100KW, recent reports have reached 20kW. And its power is bigger, the better, so the Japanese research and development of the carbon dioxide laser to send to expectations. Carbon monoxide laser power industry to create the Institute of Japan jointly developed with Mitsubishi Heavy Industries, 89 years to achieve a continuous four hours 5kW, 7kW short period of oscillation output. 93 years of its output power has reached 20kW, it is cutting welding Chiang Kai-shek to emerge, and the high-power iodine laser is the Japanese industry to create research and Kawasaki Heavy Industries developed together in 1989 and a near-infrared oscillation, which is the chemical laser, characterized by high efficiency oscillation, 5kW CO laser, 1kW iodine laser device has been set up in April 1992 established the laser application engineering center. The child only can use the  laser pointer under the supervision of the parents. laser pointer is in the good appearance. The expert has noticed the technology difference of laser pointer . In addition, the arc lamp excitation solid laser amplification are 3kW, because there is increased power led to beam divergence angle is too large and low pulse repetition frequency oscillation drawback, Japan is trying to develop semiconductor excitation YAG laser to replace it. According to reports, 1kW diode excitation by a YAG laser is made by the Japanese National Research Institute. Currently, high-power excimer lasers and their applications in materials processing research and development aroused great interest. It can make use of short-wavelength high-energy photons do not produce heat at the molecular level of processing.

laser technology top the list in optoelectronics

Promote advances in medical technology, improve people's health medical laser technology currently in ophthalmology, surgery, internal medicine, gynecology, ENT, cardiology, dermatology and other fields are widely used, laser medical equipment has entered the hospital above the county level, which of medical and technological progress and improving people's health plays an important role. Accelerate the modernization of national defense technology laser technology has been used in the military distance, direction, guidance, communications and tactical weapons, weapons and equipment to improve performance, increase the hit rate and reliability play an important role, and there is a certain number of products exported. Development of laser industry abroad, according to "Laser Collection" 1997 report, the world laser market can be divided into three regions: the United States (including North America) 55%, 22% Europe, Japan and the Pacific region accounted for 23%. Japanese market in the world of laser technology top the list in optoelectronics, the United States ranked second; in medical laser and laser detection is the United States top the list; in laser materials processing equipment is Germany top the list. Therefore, we chose the United States, Japan, Germany three countries to present their development of laser industry, laser market will reflect the basic situation of the world and its development trend. The expected use time of laser pointer can be really long.
Development of the U.S. laser industry has yet to see the full description American Laser - Optoelectronics Industry Development of the complete data are only based on the literature reviewed. 1994 U.S. Optoelectronics Industry Development Association, the 1993 World Laser - Optoelectronics market were Statistics, with a total of 750 billion U.S. dollars; U.S. Optoelectronics Industry Development Association to monitor, optical storage, optical communications and optoelectronic technology industry known as a hard copy, and that this area is now Japan's dominant position in the $ 75 billion value of about 50% in Japan, the United States should be aware that the current development of optoelectronic technology industry, the United States in this area can account for a large share. The following describes the United States of laser processing and laser medical aspects of the development. According to the 1996 "Industrial Laser Review" magazine in 1995, worldwide sales of laser processing system about $ 1.1 billion, the U.S. accounted for 31%, Europe 32% Japan 35%, other 2%. More well-known in the U.S.

a new generation of energy-saving low-power display technology

Laser display technology brings color display, color saturation, and their low power consumption, no does not mean that the future direction of display technology development, according to experts in subjects as in the laser show as a new generation of energy-saving low-power display technology with superior characteristics. 1,000 million flat-panel TV for four hours a day, a total of 29 billion kWh annual consumption, these households use more energy if laser TV will be saving 20 billion kWh per year in recent years in several large thermal power generation capacity sum, equivalent to 1.73 million tons per year to reduce carbon dioxide emissions. Meanwhile, the core component of the laser shows in the production process does not use any heavy metals, no waste water, waste gas, waste disposal, is truly environmentally friendly light source. The operating time of  laser pointer  is included in the manual.
In the 21st century, environmental protection and sustainable development of energy become a national consensus, is the world's consumers generally tend to the formation of common values. With the flat-panel TV market share in recent years a rapid increase, followed by high energy consumption is becoming increasingly recognized in national attention. According to reports, the recent Europe, the United States, Japan, Australia and other countries TV industry has a unified technology for all TV energy testing standards IEC62087Ed2, the TV industry will face a new energy standard constraints; while the EU will further regulate the introduction, intended to limit the high-energy flat-panel TV sales; the U.S. Energy Star and California issued orders to implement energy efficiency regulations TBT, are all flat-panel TV energy consumption, there are strict requirements. Environmental aspects of the product to Europe and the United States have led the introduction of stringent environmental rules, which the EU "Directive on Waste Electrical and Electronic Equipment" and "electrical and electronic equipment on the Restriction of Hazardous Substances Directive" the most representative , and its concept of "life-cycle environmental impact assessment" concept whereby product manufacturers or importers designed in response to the product life cycle impact on the environment assessment. The operating time of  laser pointer  can be calculated.

international laser display technology and product development

In addition, the laser display products in the manufacturing process does not consume a lot of water and does not require the use of mercury and other heavy metals, so the more environmentally friendly. A collection of excellent color characteristics of both performance and energy saving display a new generation laser display technology has been the subject of much attention. The operating time of  laser pointer  can be prolonged.
After a black and white display technology display, color display to the digital display, the program has completed the transition to high-resolution, digital changes. However, the current color space display products covered by the human eye can only identify the color space of 31.8%, difficult to truly restore the natural color, it has become important to further improve the display quality of the barrier. In 2009 China International Energy conservation and new energy technology fair, the laser show in the exhibition by Beijing Optoelectronic Technology Co., Ltd. as the independent R & D Division 65-inch laser TV, the color space, color saturation, respectively, is the traditional television display standard twice and 100 times. Meanwhile, energy consumption does not exceed 200 watts, electrical energy consumption of traditional TV 1 / 3, life is a traditional light source light source 10 times. Also featured is a service before the Olympics laser projection equipment, the energy consumption of a traditional projector 1 / 2, and its color, brightness and other key indicators is the existing conventional display technologies can not match, it application of interpretation of the "Green Olympics" content. The operating time of  laser pointer  has been stated clearly.
Laser display technology not only can enter the existing laser film, laser projectors, laser rear-projection TVs, laser projection video wall displays and other product markets, but also to create a new display products, such as laser micro-projectors, laser projector mobile phone, laser three-dimensional display. According to reports, the laser shows are considered "areas of a display revolution", with more than $ 50 billion a year market outlook. Sony, Mitsubishi Electric, Seiko Epson, Samsung, Germany Oushi Lang and other industry giants are stepping up international laser display technology and product development.

the starting point of the optical path

The displayed graphic outline of distortion out of the anchor line, anchor get more closer to the original graph, but the greater the display file, a picture of the scan cycle increased. Anchor coordinates (x, y) by the D / A converter output, the console driver board through optical mirrors the direction of the control, respectively, mapped to the screen will anchor the body. As the galvanometer scan frequency of large graph can be done 25 frames / sec, therefore, the quality of the laser scan can be guaranteed. The principle of laser animation show animation in general is similar to an animation file from the component pieces of the action related pictures, taken in turn coordinates to locate the anchor scan. Optical scanning unit is a complete system to produce graphic effects of direct enforcement agency. Optical console optical system optical switch is driven by the motor mirror changes in the corner to complete. The approval of laser pointer  has been stated clearly.
Based on pre-arranged program, the microcontroller through the D / A card output switching signal to the splitting of the motor driver board, amplified to drive the motor rotation. To get the projection surface geometry, the key is turned to two of the motor speed and the combination to achieve the spatial dynamics of the laser beam combination. As the light of continuity, when the mirror rotates, the inevitable connection between two points in a line, so projected on the screen graphics, the graphics can be divided into a section of straight line segments, as long as the control of the mirror between the laser beam at each end in order quickly move on it. On the screen for an axis through the mirror of the optical analysis, X can be considered to mirror motor control motor control 1 and Y 2 respectively control the mirror projection graph of X and Y directions. The square, for example, as shown, taking the square of the center coordinates of the origin (that is, the starting point of the optical path), the square of the four vertices are A, B, C, D. The approval of laser pointer  should be done at first.
To be projected on the screen such as a square, two stepper motor rotation direction and order: the first projection on the screen point to the point E, that is, Y stepper motor is transferred to Step 3; and X to the motor is Step 3 to rotate (A point); Y motor reverse rotation to Step 6 (B point); X 6 steps to reverse rotation of the motor (C point); Y motor forward rotation to step 6 (D point); X to 3 steps forward motor rotation (E point).