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.