轻型反射镜镜体结构参数的分析  

Analysis on structural parameters of light-weighted mirror

作　　者：张舸[1] 赵文兴[1] 

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：《光学精密工程》2006年第1期48-53,共6页Optics and Precision Engineering

基　　金：中国科学院二期创新资助项目

摘　　要：从理论上计算了空间遥感相机常用的四种镜体材料—ULE、Zerodur、铍(Be)和碳化硅(SiC)的结构参数。根据计算结果比较了这几种材料的性能,最后比较了两种轻型反射镜结构—对称夹心结构和底面开口结构。理论计算表明:SiC是较优异的空间用反射镜材料,对称夹心结构是较理想的镜体结构。根据理论计算所得结构参数并结合实际制作了直径为500 mm的对称夹心结构碳化硅质轻型镜体。By theoretical calculating, the structural parameters of four kinds of materials used in fabricating light-weighted mirror for space camera were analyzed. These materials are ULE,Zerodur, Be and silicon carbide （SiC）. The properties of the four kinds of materials were compared with each other. Then two kinds of light-weighted mirrors with sandwich and open back structures were also compared. The results show that the better material for space mirror is the SiC and the better structure for space mirror is sandwich structure. The SiC mirror with φ500 mm and sandwich strcture according to the structural parameters was fabricated.

关 键 词：轻型反射镜 结构参数 对称夹心结构 底面开口结构 

分 类 号：TH703[机械工程—仪器科学与技术]