Opto-mechanisms design of extreme-ultraviolet camera onboard Chang E lunar lander
Opto-mechanisms design of extreme-ultraviolet camera onboard Chang E lunar lander
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DOI：
10.1364/oe.22.015932
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发表时间：
2014-06-30
期刊：
影响因子：
3.8
通讯作者：
Yu, Ping
中科院分区：
文献类型：
--
作者：
Li, Zhaohui;Chen, Bo;Yu, Ping
2013年发射的中国嫦娥月球探测工程着陆器上安装的极紫外相机是第一个用于从月球表面到地球周围整个等离子层成像的仪器。考虑到月球环境条件以及重量和体积的限制，单球面反射镜和球面微通道板探测器组成了紧凑的光学系统。采用有限元分析模型进行了光机械优化设计，并对两轴平台、主反射镜、孔径门机构和MCP探测器等重要组件进行了详细设计，以保证其环境适应性和可靠性。机械特性试验表明，定位、指向精度及稳定性满足2′运行要求。振动结果表明，EUVC具有足够的刚度和强度安全余量，可以在发射和月球环境中生存。振动后测量成像性能，分辨率为0.08度，与预测性能相符。(C)2014年美国光学学会
The extreme-ultraviolet camera mounted on the Lander of China Chang-E lunar exploration project launched in 2013 is the first instrument used to imaging from the lunar surface to the whole plasmasphere around the earth. Taking into account both the lunar environment conditions and the weight and volume constraints, a single spherical mirror and a spherical microchannel plate detector make up the compact optical system. An optimized opto-mechanical design was presented using Finite Element Analysis Model, and the detail design for the important assemblies of the 2-axis platform, the primary mirror, the aperture door mechanism and MCP detector were all specially addressed for their environmental adaptability and reliability. Tests of mechanical characteristics have demonstrated that the position and pointing accuracy and its stability meets the operation requirements of 2'. Vibration results have shown that the EUVC has adequate stiffness and strength safety margin to survive in launch and the moon environments. The imaging performance with the resolution of 0.08 degrees is measured after vibration, in agreement with the predicted performance. (C)2014 Optical Society of America