Mobile lens group attitude measurement device and measurement method

Abstract

The invention provides a mobile lens group attitude measurement device and a measurement method, and solves the problems of lower lens assembly efficiency, repeated disassembly and assembly, complex assembly process and time and labor waste in the prior art. The device comprises a theodolite, a three-point attitude adjusting platform, a main lens cone, a zoom cam, a motor, a potentiometer, a motorcontrol panel, a cross wire reference tool and a cross wire measurement tool. A mobile lens group to be measured is installed in the main lens cone, forms a zoom lens with the main lens cone and thelike and is fixed on the three-point attitude adjusting platform. The reference tool is installed at the front end of the main lens cone, the measuring tool is installed at the front end of the movinglens group to be measured, and the theodolite and the three-point attitude adjusting platform are sequentially arranged. The optical axis of the theodolite is coaxial with the mechanical axis of themain lens cone and the optical axis of the reference tool, the three-point posture adjusting platform is used for adjusting the posture of the zoom lens, the cross wire reference tool provides a measurement reference, and the cross wire measuring tool and the theodolite cooperate with each other to measure the attitude information of the to-be-measured moving lens 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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