Device and method for adjusting optical axis parallelism of dual optical axis system

Abstract

The invention discloses an optical axis parallelism adjusting device of a double optical axis system, which comprises two reflective mirrors with the same size and perpendicular to each other and related supporting structures. The support structure consists of two metal support arms, a base plate, a rotating shaft, a support rod and a base. In the process of adjusting the parallelism of the optical axis, first a beam of indicating light is incident through one of the optical systems, and the incident angle of the finger is adjusted to make the indicating light reflect vertically. At this time, the optical axis of the indicating light is perpendicular to the reflecting surface. Then rotate the device at a certain angle along the rotation axis perpendicular to the bottom plate, so that the indicator light is reflected on the two mirrors in sequence. According to the principle of geometric optics, the indicator light after two reflections will be reflected back in parallel, and then reflected in another optical system. Finally, install a light screen with a cross, adjust the direction of the optical axis of the system so that the reflected indicator light enters the system and shines on the light screen and coincides with the center of the cross. At this time, the direction of the optical axis of the two optical systems tuned to parallel.

Description

technical field [0001] The invention belongs to the field of dual optical axis optics, and more particularly relates to an optical axis parallelism adjustment device and method for a dual optical axis system. Background technique [0002] The parallelism of the optical axes is an important parameter for precision laser processing equipment with dual-axis optical systems. In a laser processing system equipped with a video monitoring system and a laser ranging module, the parallelism between the visual axis of the video monitoring system, the optical axis of the ranging module and the optical axis of the laser emission is to ensure that the main laser beam acts accurately along the tracking and measuring axis. The key to the processing goal is the priority that must be guaranteed in design, processing, assembly and use. Before the equipment leaves the factory, it must be precisely adjusted and inspected in the assembly workshop, so that the parallelism error of the optical ax...

AI Technical Summary

Problems solved by technology

However, when the equipment leaves the factory, movement and long-term use will cause relative movement of the optical-mechanical parts, making the parallelism of the optical axis deviate from the normal technical index, so it is very necessary to realize rapid detection after leaving the factory and before field work

[0003] At present, the commonly used optical axis parallelism adjustment method in the industry is mainly the large-aperture collimator method. This method has fewer error links and high adjustment accuracy, and is widely used in the optical axis parallelism detection of large-scale optoelectronic equipment. However, the large-aperture The collimator is expensive, difficult to manufacture and bulky, it is impossible to transport it to the field, and it can only be used indoors

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