Periphery supporting mechanism of reflecting mirror in space remote sensing camera

A support mechanism and remote sensing camera technology, applied in the field of space optics, can solve problems such as poor dynamic performance, inability to meet environmental conditions, aerospace needs, and inability to effectively reduce the impact, etc., to achieve the effect of good integrity and easy processing

Inactive Publication Date: 2010-06-02
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

This kind of peripheral support mechanism can meet the requirements of ensuring high position accuracy of optical components, but the flexible link of this mechanism cannot effectively reduce the influence of temperature changes on the surface shape of the mirror, and there are also poor dynamic performance. Problems, unable to meet the strict aerospace needs of environmental conditions

Method used

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  • Periphery supporting mechanism of reflecting mirror in space remote sensing camera
  • Periphery supporting mechanism of reflecting mirror in space remote sensing camera
  • Periphery supporting mechanism of reflecting mirror in space remote sensing camera

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Embodiment Construction

[0010] The invention according to figure 2 In the implementation of the structure shown, the materials used for the mirror chamber 3, the flexible support sheet 4 and the bottom support plate 5 included in the peripheral support mechanism are all low-expansion alloy Invar, and the coefficient of linear expansion is 0.36×10 -6 K -1 ;The mechanical structure of this product is divided into three layers, but in the process of manufacturing, it can be made into one piece according to the processing process, so that the structure implemented in this way reduces the connection links, increases the reliability of the structure, and improves the overall performance of the structure. The mirror chamber 3 of the peripheral support mechanism and the reflector have three support points in the axial direction, which are used for the axial positioning function of the reflector, and the three support points are required to be coplanar to ensure the position accuracy of the reflector. There...

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Abstract

The invention provides a periphery supporting mechanism of a reflecting mirror in a space remote sensing camera, and belongs to the periphery supporting mechanism of the reflecting mirror related in the technical field of space optics. The technical problem to be solved is to provide the periphery supporting mechanism of the reflecting mirror in the space remote sensing camera. The supporting mechanism comprises a mirror cell, flexible supporting slices and a bottom supporting plate, wherein the three flexible supporting slices are positioned between the mirror cell and the bottom supporting plate; the bottom of each flexible supporting slice is fixedly connected with the bottom supporting plate; the upper part of each flexible supporting slice is fixedly connected with the mirror cell; the three flexible supporting slices form a triangle structure opposite to the middle part of the mirror cell and the bottom supporting plate; the three flexible supporting slices are of class spring sheet structure in the form of a structure having thick upper side and thin lower side with the same width. The structure can pass large-magnitude vibration tests and can effectively reduce influence of temperature change and the like on surface figure precision on the premise of ensuring the surface figure precision of optical elements.

Description

technical field [0001] The invention belongs to the technical field of space optics and relates to a peripheral support mechanism applied to a mirror in a space remote sensing camera. Background technique [0002] Reflector is the most critical optical component in the optical system of space remote sensing camera, and its surface shape accuracy has a direct impact on imaging quality. The space remote sensing camera must bear the shock, vibration and overload in the process of carrying and launching, and also bear the influence of space temperature changes, and must ensure the surface shape and position accuracy of the optical components of the optical system. Therefore, the supporting mechanism of the mirror is required to ensure the stability of the position of the mirror and the accuracy of the surface shape. In addition, when the external environment changes, it must effectively reduce the influence of the deformation of the connected parts on the surface accuracy due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/182G01S7/48
Inventor 何欣刘强谭进国
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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