A Segmented Secondary Mirror High Stability Supporting 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 large gravity deformation and heavy weight of three-bar support technology, and achieve the effects of reducing weight, improving thermal environment adaptability, and low linear expansion coefficient

Active Publication Date: 2020-03-24
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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  • A Segmented Secondary Mirror High Stability Supporting Structure
  • A Segmented Secondary Mirror High Stability Supporting Structure
  • A Segmented Secondary Mirror High Stability Supporting 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 lens support assembly 3.

[0024] The first front lens barrel 1 and the second front lens barrel 2 are installed between the primary and secondary mirrors and are used to support the bearing lens barrels of the secondary lens assembly. The first front lens barrel 1 is frustum shaped, and the second front lens barrel 2 is cylindrical; the large end flange of the first front lens barrel 1 is mounted on the front bearing frame by screws, and the small end is connected to the second front lens The tube 2 is connected at one end; the flange at the other end of the second front lens tube 2 is connected with the three sets of flexible webs 10 in the secondary mirror support assembly 3 for supporting the secondary mirror assembly. Due to the higher specific rigidity of C / SiC composite material, C / SiC composite m...

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Abstract

A segmented secondary mirror high-stability support structure, comprising a first front lens barrel (1), a second front lens barrel (2) and a secondary mirror support assembly (3); the secondary mirror support assembly (3) includes a web Components (4), secondary picture frame (5); each group of spoke plate components (4) includes a spoke plate (10), a spoke plate base; one end of the spoke plate (10) is connected with the spoke plate base, and the other end is connected with the secondary picture frame ( 5) The connected and circular secondary mirror frame (5) is tangent; each web base is fixedly installed on one end of the second front lens barrel (2), and the other end of the second front lens barrel is connected to the first front lens barrel (1) connect. In the present invention, the composite lens barrel and the flexible web structure realize high-stability support for the secondary mirror. The support structure also adopts a three-layer sandwich structure with radial plates, which not only reduces weight, improves structural rigidity, but also unloads thermal stress to a certain extent.

Description

Technical field [0001] The invention relates to a supporting 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 optical remote sensors also puts forward higher and higher requirements for the structural rigidity and dimensional accuracy of the space optical system. The secondary mirror is one of the key optical components of most space optical remote sensing systems. The supporting structure and method of the secondary mirror play a role in ensuring the surface shape of the mirror and the distance between the mirrors, thereby directly affecting the imaging quality of the optical system. The traditional secondary mirror support method is supported by a three-bar bracket. With the larger and larger diameter of the main mirror and the use of long focal length optical systems, the traditional single-rod bracket desig...

Claims

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Application Information

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Patent Type & Authority Patents(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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