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Proceedings Paper

Stray light analysis and baffle design of remote sensing camera for microsatellite
Author(s): Rongbao Shi; Jiankang Zhou; Weimin Shen
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Paper Abstract

A two-mirror catadioptric system with corrective lens groups is adopted in the remote sensing camera of microsatellite. Compared with the refractive system, it has the advantage that its performance is hardly influenced by thermal environment. Stray light results in image blur and the contrast reduction of the camera. It is necessary to analyze and control it. In traditional way, stray light can be effectively suppressed with a long baffle, which is not suitable for microsatellites with limited space. And a compact one with high performance is designed. First of all, model of the camera is set up and its stray light is analyzed with Lighttools. The main and the primary baffles are designed and optimized. Then the point source transmittance is calculated to evaluate and verify the designs. Its veiling glare index is also simulated and calculated based on black-patch measurement.

Paper Details

Date Published: 26 November 2009
PDF: 7 pages
Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75060T (26 November 2009); doi: 10.1117/12.838169
Show Author Affiliations
Rongbao Shi, Soochow Univ. (China)
Jiankang Zhou, Soochow Univ. (China)
Weimin Shen, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 7506:
2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments

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