Design and splicing of autocollimation target for space camera

Xin Sun; Yong-jian Wu; Yong-li Hu; Tian-jin Tang; Yong Liu

doi:10.1117/12.2576023

5 November 2020 Design and splicing of autocollimation target for space camera

Xin Sun, Yong-jian Wu, Yong-li Hu, Tian-jin Tang, Yong Liu

Proceedings Volume 11570, AOPC 2020: Telescopes, Space Optics, and Instrumentation; 1157007 (2020) https://doi.org/10.1117/12.2576023
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

In order to realize MTF detection without collimator, first establish an auto collimate detect system, analysis its principles and requirements. Then, simplify its optical path , give the formula of reflexed direction angle of target fringes, give the formula of its effect on MTF. Compare the coaxial system and off-axial system: target deflection caused the test MTF to drop to 87.9% of the actual MTF. Give the design method of autocollimation target, using this method, for an off-axis camera, the MTF test error due to target deflection can be reduced from 12.1% to a negligible level. Finally, discusses the splicing of detector and target, analysis the effect of filter on focal plane, propose the confocal design and splicing.

Citation Download Citation

Xin Sun, Yong-jian Wu, Yong-li Hu, Tian-jin Tang, and Yong Liu "Design and splicing of autocollimation target for space camera", Proc. SPIE 11570, AOPC 2020: Telescopes, Space Optics, and Instrumentation, 1157007 (5 November 2020); https://doi.org/10.1117/12.2576023

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KEYWORDS

Cameras

Modulation transfer functions

Target detection

Sensors

Autocollimation

Mirrors

Imaging systems

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