The laser radiation of the laser beam light of green laser pointer

The laser radiation of the laser beam light of green laser pointer might do some damage to the eyes or heads and body. 
Meanwhile, in order of the system is small and compact, and selection of music startups DMD402B stepper motor driver. It is suitable to drive the two-phase or 4 phase hybrid stepper motor, the number of segments up to 128, the output current up to 2A, low noise, and optical signal isolation input. As a result of a new bipolar cross-flow chopper drive, use the same motor other than the drive way to output more power. 0:00 switch selection. Automatically in the basic principles of the detectors do not feel the intensity, so that the photodetector to return to the default zero position in order to implement this feature, the system needs to 0:00 switch. According to the characteristics of the system, select the beam type photoelectric switch as the origin switch. 
Automatic refinement of the program flow chart of Figure 4.1.3 coarse. The coarse adjustment on the stage to measure the increase or decrease in the maximum light value ring in institutions close to 0 ring, and then subsequent judgment. The core of the algorithm consider is: remember the last go in the right direction or not, and probably determine the direction of the circle center to develop in this direction. (As recorded in the right direction for the down and right to go in both directions). Fine-tune: fine-tune the ring light values, the largest point in the case of the University of the size of the 0 ring light values a threshold of N2. Fine-tune a bubble algorithm improved algorithm, the idea is to test step in one direction if the right to continue to move in this direction. Figure B shows the 31 ring which can start the central dogma coarse search process to find the ring 0.
Has become the development trend of modern instruments.The rough classification of green laser pointer can be determined.Thus, measuring the intensity of scattered light on the different point of view, you can get a sample of particle size distribution. Different size particles to produce a different angle of the scattered light. Still, the customer needs to pay some attention to the use and storage of green laser pointer .