Side support pad precision adjustment and positioning device for large-aperture mirrors

Abstract

The invention relates to a side support liner precision adjustment and positioning device for a large-diameter reflector, which belongs to the field of large-diameter self-adaptive optical imaging detection. The invention solves the problem that the positioning adjustment of the side support liner of the large-diameter reflector is relatively complicated and lacks an effective positioning adjustment method. The device includes a measurement reference axis, a target ball base, a measurement reference axis pre-tightening mechanism, a rotation adjustment table, a two-dimensional translation adjustment table, a height adjustment table, an inclination adjustment assembly, a pitch adjustment assembly, and the like. The precision adjustment and positioning device of the side support liner of the large-diameter reflector of the present invention has a compact structure, adopts multiple adjustment platforms in series, and has many adjustment degrees of freedom; the measurement reference axis can place two high-precision laser tracker target ball bases, which can not only measure The characteristic position of the spatial point also has the measurement capability of the spatial axis; it has the positioning interface based on the kinematic positioning principle and the measuring axis pre-tightening mechanism, and the repeat positioning accuracy is high; the adaptability is strong, and it is suitable for the outer contour of the large-diameter side to be circular or elliptical. shaped reflector.

Description

technical field [0001] The invention belongs to the field of large-diameter self-adaptive optical imaging detection, and in particular relates to a side support liner precision adjustment and positioning device for a large-diameter reflector. Background technique [0002] The imaging of a large-aperture telescope depends on the diffraction limit of the system and the seeing degree of the observation environment, and the diffraction limit depends on the mirror surface shape of each mirror and transmission mirror group of the telescope system. The position accuracy of the support structure has a great influence on the mirror surface shape of the telescope mirror, so the support pads that determine the position of the support points must be precisely and repeatably positioned. The curvature of the circular reflector is the same everywhere, and the support pad can be positioned at an accurate position. However, the curvature of different support points of the elliptical reflecto...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the positioning adjustment of the side support pad of the large-diameter reflector is relatively complicated and lacks an effective positioning adjustment method in the prior art, a side support pad precision adjustment and positioning device for the large-diameter reflector is provided

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