High-precision clamping type telescopic system

Abstract

The invention relates to a high-precision clamping type telescopic system, in particular to a clamping type telescopic system which can be adjusted at high precision and can isolate external influences. The system comprises a clamping type primary mirror part, a secondary mirror part, a secondary mirror position adjusting mechanism and an external mounting mechanism. The clamping type primary mirror part comprises a primary mirror, a primary mirror fixing mechanism, a primary mirror mounting base and the like. According to the primary mirror fixing mechanism composed of the three hinges, whenan external structural part of the clamping type telescopic system shakes, the hinges of the primary mirror fixing mechanism rotate, but movement cannot be transmitted to a main machine, so that the influence of the external environment on the surface shape of the primary mirror and the position of the primary mirror can be isolated. And the secondary mirror position adjusting mechanism can precisely adjust the position of the secondary mirror by rotating the screw rod. And the external mounting mechanism adopts a cylindrical hinge mounting form, so that the influence of an external environment on the clamping type telescopic system is further isolated. The system can be applied to space cameras with clamping type telescopic requirements in spaceflight, aviation and navigation, and has theadvantages of easiness in assembly and adjustment, capability of isolating external interference and the like.

Description

technical field [0001] The invention belongs to the field of design and installation of a large-diameter cassette telescopic system, and relates to a high-precision cassette telescopic system. Background technique [0002] Due to the difficult installation and adjustment of the card-type telescopic system, it is easy to deform, and the installation accuracy is easily affected by the external environment, which makes the design of the supporting mechanism of the telescopic system more difficult. Supporting schemes for telescopic systems at home and abroad can be divided into three types: 1) hard support, that is, the optical lens mounting surface is in direct contact with the structural mounting surface; 2) truss multi-point support, generally three-point support, that is, the truss structure The mirror is fixed on the back or side with three-point adhesive. The disadvantage of the first solution is obvious. In extreme environments, the deformation of structural parts direct...

AI Technical Summary

Problems solved by technology

Among them, the disadvantage of the first solution is obvious. In extreme environments, the deformation of the structural parts directly leads to the change of the mirror surface; the second solution has been widely used in engineering applications, and its disadvantages are large design volume and unstable precision in vibration environments.

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