This method of green laser pointer is very easy

The control module system block diagram. About Laser Particle Size Analyzer automatically on the system hardware. Introduction to hardware components. Figure 3-1 automatically part of the main structure of the system hardware, including two-dimensional translation stage and stepper motor driver, motion control module. Two-dimensional translation stage. Electric two-dimensional translation stage because of its high accuracy, and rapid, automated and widely used in scientific research, industrial automation, automatic measuring and testing equipment, and other fields. Electric displacement system basically consists of three parts: the displacement of the drive motor, the controller. The electric displacement Taiwan's key is the structure of the drive screw and guide rail. The drive screw is more than a ball screw or grinding screw. This method of green laser pointer is very easy and convenient for the one.
Formed through the ball rolling friction between the ball screw and nut, easy to achieve high-speed operation, small rail production difficulties do not help to improve the resolution; grinding screw and nut for sliding friction, low efficiency, and slow, but can increase to distinguish rate. Under this system a small stroke, high-precision requirements, it should choose.Actual use, the laser spot is not reflected back to the transmitter shall prevail.