Sectional-type secondary mirror high-stability support structure

A technology with high stability and support structure, which is applied in the field of aerospace optical remote sensors, can solve the problems of heavy weight and large gravity deformation of the three-bar support technology, and achieve the effects of improving thermal environment adaptability, reducing weight, and ensuring positional accuracy

Active Publication Date: 2017-08-11
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, the present invention provides a segmented secondary mirror high-stability support structure, which solves the problem that the traditional three-bar support technology in a large-aperture long-focus optical system is heavy and heavy The problem of large gravity deformation, high stability and reliability

Method used

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  • Sectional-type secondary mirror high-stability support structure
  • Sectional-type secondary mirror high-stability support structure
  • Sectional-type secondary mirror high-stability support structure

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Embodiment Construction

[0023] Such as figure 1 As shown, a segmented secondary mirror high-stability support structure includes a first front lens barrel 1 , a second front lens barrel 2 and a secondary mirror support assembly 3 .

[0024] The first front lens barrel 1 and the second front lens barrel 2 are load-bearing lens barrels installed between the primary and secondary mirrors for supporting the secondary mirror assembly. The first front lens barrel 1 is a truncated cone, and the second front lens barrel 2 is cylindrical; the end flange of the large end of the first front lens barrel 1 is installed on the front load-bearing frame by screws, and the small end is connected to the second front lens One end of the barrel 2 is connected; the flange at the other end of the second front lens barrel 2 is connected to three sets of flexible webs 10 in the secondary mirror support assembly 3 for supporting the secondary mirror assembly. Due to the high specific stiffness of the C / SiC composite materia...

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Abstract

Provided is a sectional-type secondary mirror high-stability support structure, which comprises a first front lens cone (1), a second front lens cone (2) and a secondary mirror support assembly (3). The secondary mirror support assembly (3) comprises spoke plate assemblies (4) and a secondary mirror frame (5). Each spoke plate assembly (4) comprises a spoke plate (10) and a spoke plate base. One end of the spoke plate (10) is connected with the spoke plate base, and the other end thereof is connected with the secondary mirror frame (5) and is tangent to the circular secondary mirror frame (5); each spoke plate base is fixedly arranged at one end of the second front lens cone (2); and the other end of the second front lens cone (2) is connected with the first front lens cone (1). The support structure realizes high-stability secondary mirror support through the composite-material lens cones and a flexible spoke plate structure; and the support structure also adopts the spoke plate structure in a three-layer sandwich structure, so that weight is reduced, structure rigidity is improved, and thermal stress is unloaded to some extent.

Description

technical field [0001] The invention relates to a support structure and belongs to the technical field of aerospace optical remote sensors. Background technique [0002] With the rapid development of aerospace optical remote sensor technology, the pursuit of higher resolution of optical remote sensors also puts forward higher and higher requirements for the structural stiffness and dimensional accuracy of space optical systems. The secondary reflector is one of the key optical components of most space optical remote sensing systems. The supporting structure and method of the subreflector play a role in ensuring the mirror surface shape and the distance between the mirrors, thus directly affecting the imaging quality of the optical system. The traditional secondary mirror support method is supported by a three-bar bracket. With the increasing diameter of the primary mirror and the adoption of long focal length optical systems, the traditional single-rod bracket design will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 练敏隆王跃张祝伟董杰赵学敏贺瑞聪
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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