Measuring method for attitude measuring device of moving mirror group

Abstract

The invention provides a device and method for measuring the attitude of a moving lens group, which solves the problems of low efficiency in assembling lenses, repeated disassembly and assembly, complex assembly process, time-consuming and labor-intensive problems. It includes a theodolite, a three-point attitude adjustment platform, a main lens barrel, a zoom cam, a motor, a potentiometer, a motor control board, a crosshair reference tool, and a crosshair measurement tool; The zoom lens is composed of lens barrels, etc., which are fixed on the three-point attitude adjustment platform; the reference tool is installed at the front end of the main lens barrel; the measurement tool is installed at the front end of the moving lens group to be tested; The optical axis of the main lens barrel and the optical axis of the reference tool are set coaxially; the three-point attitude adjustment platform is used to adjust the attitude of the zoom lens; the cross-hair reference tool provides the measurement reference; the cross-hair measurement tool and theodolite cooperate with each other to measure Measure the attitude information of the moving mirror group.

Description

technical field [0001] The invention belongs to optical imaging technology, and in particular relates to a measuring device and a measuring method for the posture of a moving mirror group. Background technique [0002] During the lens assembly process, it is necessary to ensure that the optical center of each lens glass is coaxial with the mechanical center. When each moving lens group is static, it can be processed through centering to ensure the coaxiality of the optical and mechanical axes. However, when the lens group is based on the cam When the curve moves in the main lens barrel, due to the gap between the moving parts, the posture of the moving lens group will change. These posture changes will cause the optical axis to jump and reduce the transmission, which will affect the image quality. [0003] In the past, after the post-image generation, if the image quality is not high and the optical axis jumps obviously, it is necessary to repeatedly disassemble and assemble...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low assembly lens efficiency, repeated disassembly and assembly, complicated assembly process, time-consuming and labor-intensive problems, and provide a mobile lens group attitude measurement device and measurement method. By using the device, each mobile lens can be obtained The change in attitude of the group during the movement process, through the optical simulation analysis of the change, evaluate the lens transmission and optical axis jump, and realize the synchronization of installation, debugging and measurement during the lens assembly process, avoiding the inclination of the lens group in the later stage. The lens transmission is reduced, the optical axis jumps obviously, etc.

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