Radial support mechanism of primary mirror of large aperture telescope for eliminating temperature stress

Abstract

The invention provides a radial support mechanism of a primary mirror of a large aperture telescope for eliminating the temperature stress, which consists of a radial support base, a lever bracket, clump weights, a lever, a lower pair slider bar, rolling bearings and an indium steel sleeve. The indium steel sleeve is sleeved on the radial support base which is located in the middle of the indium steel sleeve. Silica gel is dotted at a gap fit position between the radial support base and indium steel sleeve so that the indium steel sleeve is fixed on the radial support base. The lever is connected to the radial support base via two mounting screws. The pivot end of the lever is connected to the lever bracket by two rolling bearings through the lower pair slider bar. The clump weights are screwed in the lower end part of the lever in threaded connection. Two bearing cover plates cover the bearing holes on the lever bracket. When the radial support mechanism of the primary mirror works, the radial support mechanism is connected to and fixed on the primary mirror base by means of two mounting screws via the lever bracket, and the radial support base extends to the radial support holesof the primary mirror to be mounted.

Description

technical field [0001] The invention belongs to the technical fields of space exploration, astronomical observation, etc., and relates to a radial support mechanism and a support method for a primary mirror of a large-aperture telescope. Background technique [0002] In the technical fields of space detection and astronomical observation, in order to realize space long-distance target detection and explore the mysteries of the universe, it is necessary to increase the aperture of photoelectric detection equipment to improve the resolution of the system and collect more target energy, so that it is easier to find and identify targets . The large-aperture primary mirror in these optoelectronic devices is a key part of the entire device. It is affected by both the external environment and the support system. The surface shape distortion of the primary mirror generated by these effects will lead to a decrease in the optical image quality of the entire device. decline. The supp...

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Problems solved by technology

[0004] In order to solve the problem of inconsistent thermal expansion coefficients of primary mirror materials and supporting materials in the prior art, the support accuracy of large relative aperture primary mirrors, and the problem that large external dimensions affect the overall structural performance, the purpose of the present invention is to eliminate temperature stress. Radial Support Mechanism for Primary Mirror of Large Aperture Telescope

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