Precision adjusting mechanism and focusing device for spatial optical telescope

Abstract

The invention belongs to the technical field of spatial optical observation, particularly relates to a precision adjusting mechanism and a focusing device for a spatial optical telescope, and solves the problems that an executing mechanism in an existing focusing device is large in occupied space and insufficient in adjusting precision. The precision adjusting mechanism comprises a lever center body; one end of the lever center body is fixedly connected with a first flexible connecting piece, and the other end of the lever center body is fixedly connected with a second flexible connecting piece; the first flexible connecting piece and the second flexible connecting piece are bent in the same direction; the first flexible connecting piece is connected with a nut of a ball screw; the secondflexible connecting piece is mounted on a fixed base; a lever output end is arranged on the lever center body in a direction opposite to a bending opening of the flexible connecting piece; one end ofthe lever output end is arranged on the lever center body, and the other end of the lever output end is connected with a to-be-adjusted piece through a lever mandrel; and the precision adjusting mechanism is further provided with a limiting structure for limiting the radial movement of the to-be-adjusted piece. The precision adjusting mechanism is matched with a corresponding transmission mechanism to be applied to the focusing device of the spatial optical telescope, so that the focusing precision is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of space optical observation, and specifically relates to a precision adjustment mechanism and a focusing device for space optical telescopes. Background technique [0002] During the mission of the space telescope, the focal length of the space optical telescope needs to be adjusted according to the needs of the shooting target to obtain high-resolution images. Therefore, the design of the focusing mechanism of the space optical telescope is very important. [0003] At present, there are mainly two different types of actuators in the focus adjustment mechanism. One is the use of a cam mechanism, but this form often takes up a lot of space and has low adjustment accuracy; the other is a screw mechanism, but its The cold welding resistance is poor and the applicable environment is limited. Therefore, most secondary mirror focusing mechanisms focus on compactness and compactness, while ignoring the accuracy and app...

AI Technical Summary

Problems solved by technology

For space optical telescopes with high work requirements, the optical index is the core content. Therefore, how t

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