离轴反射式空间天文望远系统设计及其杂散光抑制研究

发布时间：2018-05-18 21:56

本文选题：光学设计 + 离轴三反系统　；参考：《光学学报》2014年08期

【摘要】：为满足天文望远系统大F数、长焦距、轻小型化、高成像质量、高消杂光比等要求,采用库克离轴三反消像散(TMA)光学结构形式,设计了参数为焦距f′=24m,F数16,视场1.6°×1°的离轴望远系统。设计了系统的外遮光罩及其挡光环,并对系统内部的杂光陷阱结构进行优化。利用杂光分析软件对系统的点源透射率(PST)进行仿真计算,结合正向追迹和反向追迹两种方法寻找关键面与关键路径,反复迭代优化改进相应光机结构。设计及仿真结果表明,系统各视场光学传递函数均接近衍射极限,视场外规避角40°时,PST小于10-11,满足空间天文望远系统对成像质量和杂光抑制的要求。
[Abstract]:In order to meet the requirements of large F number, long focal length, light and miniaturization, high imaging quality and high ratio of light to clutter, the optical structure of Cook's off-axis antialiasing and astigmatic TMA was adopted in order to meet the requirements of astronomical telescopes. An off-axis telescopic system with a focal length of 24mt F number of 16 and a field of view of 1.6 掳脳 1 掳is designed. The system outer shade and its halo are designed, and the stray trap structure is optimized. The point source transmittance (PST) of the system is simulated by using the stray light analysis software. The key plane and the critical path are found by combining the forward tracing method and the reverse tracing method, and the corresponding optical mechanical structure is optimized and improved repeatedly. The design and simulation results show that the optical transfer function of each field of view of the system is close to the diffraction limit, and the PST is less than 10-11 when the out-of-field evading angle is 40 掳, which meets the requirements of the space astronomical telescope system for imaging quality and suppression of stray light.
【作者单位】：中国科学院长春光学精密机械与物理研究所中国科学院光学系统先进制造技术重点实验室;中国科学院大学;
【基金】：国家自然科学基金青年科学基金(61007009)
【分类号】：TH751

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