Lens assembly and adjustment system and method for large aperture space optical camera

Abstract

The large-diameter space optical camera lens assembly and adjustment system and method relate to the field of space optical remote sensing and solve the problems of low optical transfer function and low imaging quality of the large-diameter space optical camera lens optical system. The adjustment system of the present invention includes a camera lens, a lens adjustment frame, three lens connecting seats, a secondary mirror adjustment frame, a secondary mirror adjustment frame, a plane mirror, a two-dimensional adjustment mechanism for a plane mirror, an interferometer, an interferometer adjustment frame, a three-mirror Adjustment stand. The camera lens includes a camera frame, a secondary mirror assembly, a secondary mirror spacer, a primary mirror assembly, a camera substrate, a rear bracket, a first folding mirror assembly, a third mirror assembly, a three-mirror spacer, a second folding mirror assembly, and three connecting supports seat. The present invention adopts the installation and adjustment structure in the vertical direction of the optical axis of the camera lens, which can ensure that after the large-diameter space optical camera lens is installed and adjusted on the ground, when it enters the microgravity environment of space, the relative position accuracy of each mirror changes little, and the optical System image quality remains largely unchanged.

Description

technical field [0001] The invention relates to the technical field of space optical remote sensing, in particular to a large-diameter space optical camera lens assembly system and an assembly method. Background technique [0002] Large-aperture space optical camera lenses are usually reflective optical systems, generally composed of a primary reflector, a secondary reflector and a third reflector. For large-aperture space optical camera lenses, the three mirrors need to have extremely high relative position accuracy to ensure the imaging quality of the optical system. In the development and production process of large-aperture space optical camera lenses, the imaging quality of the optical system can finally meet the requirements through high-precision adjustment of each mirror. However, since the large-aperture space optical camera lens works in the microgravity environment of space, the gravity on its structure will disappear when it is on the ground, and the change in g...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that after the lens of the large-aperture space optical camera is installed and adjusted at the level of the optical axis on the ground, the cantilever effect caused by the large distance between the primary and secondary mirrors in the optical system is very sensitive to changes in gravity. After entering the microgravity environment of space, each reflector The relative position accuracy will change greatly, resulting in the problem that the optical transfer function and imaging quality of the optical system are greatly reduced. The invention provides a large-aperture space optical camera lens assembly system and assembly method

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