离轴三反光学遥感器遮光罩的设计与试验验证  

Design and test verification of baffle for off-axis three-mirror space optical remote sensor

作　　者：齐光[1] 王书新[1] 李景林[1] 焦爱祥 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《中国光学》2016年第4期472-482,共11页Chinese Optics

基　　金：国家高技术研究发展计划(863计划)资助项目(No.863-2-5-1-13B)~~

摘　　要：遮光罩是空间光学遥感器的重要组成部分,是抑制空间光学遥感器杂散光的首要措施。遮光罩削弱杂散光效果的好坏直接影响到光学遥感器光学系统的成像品质。本文设计了一种满足离轴三反空间光学遥感器要求的大尺寸碳纤维/环氧复合材料遮光罩,并结合有限元分析、杂散光分析及力学试验、光学系统传递函数检测手段来验证该遮光罩是否满足航天使用要求。结果显示,各视场光学系统传递函数检测结果基本一致,均在0.2以上。表明该大尺寸遮光罩具备良好的结构的稳定性、可靠性,能够满足空间应用要求。The baffle is an important component of the space optical remote sensor, which is the main way to weaken the stray light from the out-of-field radiation source, and the imaging quality of the space optical re- mote sensor is dependent on the baffle＇s performance. In this paper, a large size baffle layout will be designed to meet the off-axis Wetherell TMA optical system. The baffle is made of carbon fiber reinforced polymer （CFRP）. The FEM analysis, stray light analysis, mechanical vibration test and optical system MTF test are used to verify the usage requirement in aerospace. Results show that the MTF of the optical remote sensor can reach up to 0.2 in each field of view. It is indicated that the baffle has stable structure and good reliability and can meet the requirements of space applications.

关 键 词：空间光学遥感器 遮光罩 稳定性 有限元分析 杂散光分析 

分 类 号：V445.8[航空宇航科学与技术—飞行器设计] TH16[机械工程—机械制造及自动化]