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Active thermal control focusing device for 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, achieve the effect of reducing weight, compact structure, and achieving stability

Active Publication Date: 2015-04-08
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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  • Active thermal control focusing device for space camera
  • Active thermal control focusing device for space camera
  • Active thermal control focusing device for space camera

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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 consists of the space camera active thermal control focusing device consisting of a secondary mirror assembly and a focusing assembly, wherein the secondary mirror assembly includes a secondary mirror chamber 1. The ring 2, the secondary lens 3, and the focusing assembly are composed of a heat insulation pad 4, an Invar column 5, an aluminum ring 6, a heating plate 7, a radiator 8 and a thermistor 9. Secondary lens assembly The secondary lens 3 is compressed in the secondary mirror chamber 1 by the secondary lens pressing ring 2. In the focusing assembly, the heat insulation pad 4 acts to isolate the temperature change and transfer heat to the secondary mirror assembly. Invar column 5 passes through 3 M3 screws are connected to the secondary chamber 1, the upper end of the Invar column 5 and the aluminum ring 6 are connected with three M3 screws, the outer circle of th...

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Abstract

The invention relates to an active thermal control focusing device for a space camera. The device comprises a secondary mirror component and a focusing component, wherein the secondary mirror component comprises a secondary mirror chamber (1), a secondary mirror pressure ring (2) and a secondary lens (3); the focusing component comprises a heatproof mat (4), an invar steel column (5), an aluminum ring (6), a heating piece (7), a radiator (8) and a thermistor (9); the secondary lens (3) is tightly pressed in the secondary mirror chamber (1) through the secondary mirror pressure ring (2). The device has the advantages of consistency with a space using condition, stable performance, high accuracy and reliable structure.

Description

Technical field [0001] The invention relates to an active thermal control focusing device for a space camera, belonging 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 spaceborne 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. To obtain high-resolution images, 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 during orbit is complicated. Changeable, the space gravity field is different from the micrograv...

Claims

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Application Information

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Patent Type & Authority Applications(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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