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An active thermal control focusing device for a space camera

A space camera and active technology, applied in the direction of focusing device, camera, installation, etc., can solve the problems of poor impact resistance, etc., and achieve the effect of reducing mass, good vibration characteristics, and universal applicability

Active Publication Date: 2017-10-20
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The screw nut mechanism has poor impact resistance, but its structure is simple and its movement is flexible

Method used

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  • An active thermal control focusing device for a space camera
  • An active thermal control focusing device for a space camera
  • An active thermal control focusing device for a space camera

Examples

Experimental program
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Embodiment Construction

[0022] Such as figure 1 , 2 , 3, the space camera active thermal control focusing device of the present invention is composed of a secondary mirror assembly and a focusing assembly, wherein the secondary mirror assembly includes a secondary mirror chamber 1, a secondary mirror pressure Ring 2, secondary lens 3, and focusing assembly are composed of heat insulating pad 4, Invar column 5, aluminum ring 6, heating sheet 7, radiator 8 and thermistor 9. The secondary lens 3 of the secondary mirror assembly is pressed tightly in the secondary mirror chamber 1 by the secondary mirror pressure ring 2. In the focusing assembly, the heat insulation pad 4 is used to insulate the heat transfer to the secondary mirror assembly when the temperature changes. The invar column 5 passes through three The M3 screw is connected with the sub-environment chamber 1, the upper end of the Invar column 5 is connected with the aluminum ring 6 with three M3 screws, the outer circle of the aluminum ring ...

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Abstract

The invention relates to an active thermal control focusing device for a space camera, comprising a secondary mirror assembly and a focusing assembly, the secondary mirror assembly including a secondary mirror chamber (1), a secondary mirror pressure ring (2) and a secondary lens (3); The focusing assembly includes a thermal insulation pad (4), an Invar column (5), an aluminum ring (6), a heating plate (7), a radiator (8) and a thermistor (9); the secondary lens (3) is pressed by the secondary mirror The ring (2) is compressed in the secondary mirror chamber (1). The invention has the advantages of meeting the space use conditions, stable performance, high precision and reliable structure.

Description

technical field [0001] The invention relates to an active thermal control focusing device for a space camera, which belongs to the technical field of aerospace remote sensing cameras. Background technique [0002] In recent years, aerospace technology has developed very rapidly, and the application of space-borne space cameras has become more and more extensive. The key to the mission of space cameras is to obtain and provide clear and complete images. In order to obtain high-definition images, when the camera is shooting, the ground The scene should be accurately imaged on the photosensitive surface of the CCD. However, with the development of science and technology, the requirements for the reliability and accuracy of space cameras in harsh launch environments and space environments are getting higher and higher. Space cameras will be subject to vibration and shock during transportation and launch, and the space temperature is complex when working in orbit. Changeable, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/04G03B13/32
CPCG02B7/04G03B13/32
Inventor 相里斌吕群波李伟艳张丹丹刘扬阳王建威裴琳琳陈鑫雯孙建颖
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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