Appl Opt. 2023 Apr 20;62(12):3132-3141. doi: 10.1364/AO.483427.
The space-agile optical composite detection (SOCD) system with a pointing mirror possesses flexible and fast response ability. Like other space telescopes, if the stray light is not properly eliminated, it may result in a false response or noise that floods the real light signal due to the low illuminance and large dynamic range of the target. The paper shows the optical structure layout, the decomposition of the optical processing index and roughness control index, the stray light suppression requirements, and the detailed stray light analysis process. The pointing mirror and ultra-long afocal optical path increase the difficulty of stray light suppression in the SOCD system. This paper presents the design method of a special-shaped aperture diaphragm and entrance baffle, black baffle surface testing, simulating, 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 the platform posture of the SOCD system.
带指向镜的空间敏捷光学复合探测（SOCD）系统具有灵活快速的响应能力。与其他空间望远镜一样，如果不适当消除杂散光，由于目标的低照度和大动态范围，可能会导致由于杂散光导致的虚假响应或噪声淹没真实光信号。本文展示了光学结构布局、光学处理指标和粗糙度控制指标的分解、杂散光抑制要求以及详细的杂散光分析过程。指向镜和超长离轴光路增加了 SOCD 系统中杂散光抑制的难度。本文提出了特殊形状光阑和入口挡板的设计方法、黑挡板表面测试、模拟、选择和杂散光抑制分析过程。特殊形状的入口挡板对抑制杂散光有显著效果，并降低了对 SOCD 系统平台姿态的依赖。
