An adjustable double-wedge laser scanning actuator based on cantilever beam structure

Abstract

The invention provides an adjustable dual-optical-wedge laser scanning performing mechanism based on a cantilever beam structure. The adjustable dual-optical-wedge laser scanning performing mechanism comprises an upper end cap, an upper optical wedge support arm, a lower optical wedge support arm, a high motor support body, a low motor support body, a high motor output gear, an upper optical wedge bearing transmission gear, an upper optical wedge high speed bearing, a high micro-motor, a low micro-motor, an upper optical wedge, a lower optical wedge, a lower optical wedge bearing transmission gear, a low motor output gear and a lower optical wedge high speed bearing. The upper end cap and the high motor support body are respectively provided with a fine adjustment set screw and a fine adjustment bolt which apply force to the upper optical wedge support arm and the lower optical wedge support arm so as to realize a fine adjustment function of the position and the axial deflection angle of the upper optical wedge and the lower optical wedge. The high micro-motor and the low micro-motor respectively drive the upper optical wedge and the lower optical wedge to relatively rotate around the common optical axis, wherein rotation is different in speed and opposite in direction, so that scanning paths of different speed ratios are generated. The adjustable dual-optical-wedge laser scanning performing mechanism has the advantages of being small in size, adjustable in optical wedge axial inclination angle and reliable in structure so that scanning and imaging distortion caused by installation error of the optical wedges can be avoided, and the adjustable dual-optical-wedge laser scanning performing mechanism is suitable for the field of flexible and high speed application.

Description

technical field [0001] The invention relates to a device for active laser scanning quasi-imaging detection, in particular to an adjustable double-wedge laser scanning actuator based on a cantilever beam structure, which belongs to the field of optical-mechanical-electrical technology. Background technique [0002] Rotating double wedge refraction technology is to project the laser beam vertically onto the surface of the wedge pair, and the pair of wedges rotates relatively around the same optical axis, and the refracted laser beam scans into a specific pattern within a certain time period and within a certain field of view A technology in which the double-wedge is composed of two optical flat glasses with a certain wedge angle, and the double-wedge system refers to an optical path system composed of two optical wedges with the same refractive index and the same refraction angle that are close to each other. The light is vertically incident on the front surface of the optical...

AI Technical Summary

Problems solved by technology

[0007] In view of the defects in the prior art, the object of the present invention is to overcome the shortcomings of the existing scanning actuators, such as large volume and poor accuracy of laser imaging trajectory error, and provide an adjustable double-wedge laser scanning system based on a cantilever beam structure. The actuator is used to deflect the optical wedge axis by tightening the fine adjustment bolts and set screws of the optical wedge axis, so as to realize the adjustment of the double optical wedge system and meet the coaxiality requirements of the double optical wedge, so as to overcome the installation and assembly errors of the optical wedge. The effect of deformed scanning images

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