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A star sensor hood

A technology of star sensor and hood, which is applied in the field of astronautical starry sky detection

Active Publication Date: 2018-06-12
SHANGHAI XINYUE METER FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no star sensor hood with the above technical features in the industry, so related products are needed to eliminate the interference of stray light at the sun protection angle of the star sensor

Method used

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  • A star sensor hood
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Embodiment Construction

[0024] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0025] Such as figure 1 and figure 2 Shown is the structure diagram of the star sensor hood. Four weight-reducing halos are placed in the case 5, and are arranged sequentially from the entrance pupil to the exit pupil of the hood to form the first halo 1, the second halo 2, the third halo 3, and the fourth halo 4 . The four light blocking rings are thickened at the threaded holes, and the other positions are lightened.

[0026] The first light blocking ring 1, the second light blocking ring 2, and the fourth light blocking ring 4 are trumpet-shaped in shape, and the third light blocking ring 3 is flat in shape; end. The included angle formed by the connecting line between the first blo...

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PUM

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Abstract

A light hood for a star sensor, the four light blocking rings are placed in the case, connected with the case by screws, and arranged sequentially from the entrance pupil to the exit pupil of the light hood to form the first light blocking ring and the second light blocking ring , the third light ring, the fourth light ring; the first light ring, the second light ring, and the fourth light ring are trumpet-shaped; the third light ring is flat; the first light ring and the fourth light ring are relatively placed on the cover At both ends of the shell, the line connecting the edges of the first halo ring and the fourth halo halo forms an included angle of 36° with the center line of the housing. The present invention adopts the optical-mechanical structure of the shading cover composed of a cover shell and a halo ring to ensure that the star sensor can output valid data after the solar protection angle is greater than 36°; it can prevent the non-imaging light beams with a solar protection angle greater than 36° from directly reaching the optical system entrance pupil.

Description

technical field [0001] The invention relates to aerospace star space detection technology, in particular to a star sensor applied on a satellite, in particular to a star sensor shading cover, which realizes that the star sensor eliminates the interference of stray light at a sun protection angle of not less than 36°. Background technique [0002] Stray light suppression has become one of the key technologies of photodetectors - star sensors, and the hood is the primary measure to effectively suppress stray light. Effective suppression is carried out within a certain design protection angle range. [0003] The optical structure design idea of ​​the star sensor hood is: 1 to prevent the non-imaging light beam from directly incident on the entrance pupil of the optical lens; The purpose is to attenuate the incident stray light energy to the greatest extent; 3 sandblast the hood shell to increase the diffuse reflection of the surface; 4 the scattering surface should have the mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B11/04
Inventor 杜伟峰吴永康孙少勇郑循江陈龙江刘小华孔华
Owner SHANGHAI XINYUE METER FACTORY