A support structure with ultra-high thermal stability for small mirrors
A technology of thermal stability and support structure, which is applied in the aerospace field, can solve the problems of poor resistance to external interference, high requirements for assembly technology, and large changes in the surface shape of the mirror, and achieve strong resistance to external interference and low assembly technology requirements. The effect of high and small change in surface accuracy
Active Publication Date: 2016-11-09
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The purpose of the present invention is to propose a support structure with ultra-high thermal stability for small reflectors, which solves the low natural frequency of reflectors in the prior art, poor ability to resist external interference, large changes in the surface shape of reflectors, and high requirements for assembly technology. , poor interchangeability, difficulty in mass production
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[0014] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0015] See attached figure 1 , attached figure 2 And attached image 3 , a support structure of ultra-high thermal stability of a small reflector of the present invention includes a mirror chamber 1 and a flexure 3; Inside, the flexible joint 3 includes a cylindrical barrel 301 and a plurality of flexible single arms 302, and the plurality of flexible single arms 302 are evenly distributed on the outside of the cylindrical barrel 301, and each flexible single arm 302 is a double-layer flexible Hinge.
[0016] The flexible joint 3 is fixed inside the mirror chamber 1, specifically: the flexible joint 3 and the mirror chamber 1 are in clearance fit, and the flexible joint is realized by pressing each flexible single arm 302 with the top screw 2 in the radial direction. 3 is fixed in the radial direction of the mirror chamber 1, the axial pressure ring...
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A support structure with ultra-high thermal stability of a small reflector belongs to the field of aerospace technology, and aims to solve the problem of low natural frequency of the reflector and poor ability to resist external interference in the existing technology; High, poor interchangeability, and difficult to mass-produce. The present invention includes a mirror chamber and a flexible joint; the flexible joint and the reflecting mirror are concentrically glued and fixed, the flexible joint is fixed inside the mirror chamber, the flexible joint includes a cylindrical tube and a plurality of flexible single arms, and the multiple flexible single arms The circumference of the arms is evenly distributed on the outside of the cylindrical barrel, and the flexible single arm is a double-layer flexible hinge. Under the action of temperature load, the thermal deformation stress deformation energy of the lens barrel is absorbed when it passes through the flexible unloading groove of the flexible joint during the transfer process to the mirror, which ensures the uniform deformation of the mirror. At this time, the surface accuracy changes very much. Small. The components are fixedly connected, which does not require high assembly technology, has good interchangeability, and has a strong ability to resist external dynamic interference.
Description
technical field [0001] The invention belongs to the technical field of aerospace and relates to a support structure applied to a small reflector, in particular to a support structure with ultrahigh thermal stability for a small reflector. Background technique [0002] As an important part of optoelectronic equipment, the reflector determines the imaging quality of the optoelectronic system. It is required that the reflector has a strong ability to resist external dynamic interference and the surface shape of the reflector changes little. The support structure of the reflector needs to reduce external interference on the reflector and the change of the surface shape of the reflector while effectively positioning the reflector. [0003] The support structure of small mirrors in the prior art is mostly in the form of peripheral support. The mirror is fixed in the lens barrel specially designed for it. The circle is fixed. The natural frequency of this kind of mirror support s...
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IPC IPC(8): G02B7/192
Inventor 辛宏伟袁野李志来杨利伟关英俊
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI