posted on 2023-02-08, 14:37authored byHan Peixian, JunLi Guo, Meili Zhang, Rongrong Xue, ren ge, Yong Liu
The space-agile optical composite detection system with pointing mirror possesses flexible and fast response ability. Just like other space telescopes, if the stray light is not properly eliminated, it may result in a false response or noise flooding the real light signal due to the low illuminance and large dynamic range of target. The paper shows the optical structure layout, the decomposition of the optical figure profile and roughness profile index, the stray light suppression requirements, and the detailed stray light analysis process. Pointing mirror and ultra-long afocal optical path increase the difficulty of stray light suppression in space-agile optical detection system. This paper will present the design method of special shaped aperture diaphragm and heterosexual entrance baffle, black baffle surface testing, simulating and selection, and stray light suppression analysis process. The special-shaped entrance baffle has a significant effect on the suppression of stray light, and reduced dependence on platform posture.
History
Funder Name
National Natural Science Foundation of China; Outstanding Youth Science and Technology Talents Program of Sichuan; Youth Innovation Promotion Association of Chinese Academy of Sciences