空间相机高精度反射镜设计与环境适应性分析  

Design of High Precision Reflector of Space Camera and Analysis of Environmental Adaptability

作　　者：吴俊[1] 姜宏佳 罗廷云[1] 姜彦辉 孙世君[1] 程少园[1] WU Jun;JIANG Hong-jia;LUO Ting-yun;JIANG Yan-hui;SUN Shi jun;CHENG Shao-yuan(Beijing Institute of Space Mechanics＆Electricity, Beijing 100094)

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《环境技术》2018年第2期33-41,共9页Environmental Technology

基　　金：国家重点研发专项2016YFB0500802

摘　　要：某高分空间相机的光学系统设计对某反射镜组件提出了超高面形、高稳定性要求。本文从实现最优光学性能角度出发(最终镜面面形精度RMS≤1/80λ),综合考虑材料选择、加工、装调、实验等多因素,优化设计了两种高性能反射镜组件方案。通过各类环境工况对反射镜性能的影响分析仿真,证实了两种设计方案的空间环境高适应性。尤其是对于真空环境下胶收缩和地面装配环境下强迫位移的影响分析,更体现了设计分析的完整和可靠。最终依据现有技术基础优选方案来进行实物研制,实验结果为面形RMS≤1/80λ,达到中小口径国内外领先水平。本文具有较强的工程应用价值和指导意义,能够促进遥感相机在空间环境中成像质量的提升。The optical system design of a space camera puts forward the requirements of ultra-high profile and high stability for reflector assembly. In this paper, we design two high-performance reflector to achieve the best performance （the RMS of reflector under comprehensive operational condition including processing effect is less than 1/80λ） of reflector after considering the factors of material, fabrication, alignment and experiment. The analysis of the influence of various operational conditions on the performance shows that the two high environmental adaptability are feasible. Especially for the vacuum environment when the rubber shrinkage and ground assembly environment forced displacement impact analysis, reflects all-sidedness and high- reliability of design. Finally, the optimal design plan based on the existing technical condition goes through processing and experiment. The RMS is less than 1/80 λ which has already reached the advanced level at home and abroad in medium-small caliber. This paper has important value and instruction significance in engineering, and is helpful to promote the optical remote sensing camera in space environment image quality improvement.

关 键 词：高分辨率 空间相机 反射镜组件 

分 类 号：TH703[机械工程—仪器科学与技术]