第19卷
第10期
2011年10月
文章编号
1004924X(2011)10-242707
光学精密工程
Optics and Precision Engineering
月基极紫外相机光机结构设计
王智*，李朝辉
（中国科学院长春光学精密机械与物理研究所，吉林长春130033）
Vol. 19No,. 10
Oct, 2011
摘要：为了对地球等高子体层产生的30.4nm辐射进行全方位的长期监视和观测，研制了月基极紫外相机。相机主体采用多层膜单反射镜光学系统以及30.4nm球面光子探测器的结构形式，跟踪机构采用俯仰-方位模式，由步进电机驱动实现对地球的捕获针对卫星发射、地月变轨、月表着陆过程中的振动冲击以及月表残酷的混度环境，月基极紫外相机的光机结构设计考虑了环境（力学、温度)适应性，有限元分析结果表明，光机结构在整机质量<15kg条件下，一阶谱报
nm(<14nm)，满足相机的技术指标要求。
关
调：极紫外相机；光机结构；等高于体层键
中图分类号：V476,3
文献标识码：A
doi;10, 3788/OPE, 20111910, 2427
Designofoptical-mechanicalstructureforlunar-based
extremeultravioletcamera
WANG Zhi', LI Zhao-hui
(ChangchunInstituteof Optics，FineMechanics and Physics, ChineseAcademy of Sciences，Changchun 130033，China） Corresponding author,E-mail;wz070611@126.com
Abstract: To monitor and research 30, 4 nm radiation generated by the plasmasphere, a lunar-based Extreme Ultraviolet(EUV) camera was developed. A multilayer mirror optical system and a 30. 4 nm photon counting detector were adopted as the main body of the camera, and a two-dimensional tracing mechanism drived by a stepping motor was used to trace the earth. Aim to the vibration and impact from the process of satellite launching, orbit changes from earth's to moon's, moon landing, and the cruel temperature environment of the moon, the optical-mechanical design of EUV camera gave a con-sideration to the environmental adaptability. After the optimization by finite element analysis,it shows that the first order resonant frequency of the optical-mechanical structure is 49. 3 Hz with the mass less than 15 kg, the motion mechanism operates freely within 50~+80 C, and the mirror surfacc accuracy (RMS) is 13. 44 nm(<14 nm) under the load of uniform temperature drop of 50C.
收稿日期：2011-01-20；修订日期：2011-03-18 基金项目：探月工程二期项目