多角度偏振辐射计望远系统的新设计

为解决多角度偏振辐射计分孔径偏振测量的视场统一问题，并保证偏振测量精度。提出基于反射式望远系统的分孔径光路，并对选定的两镜扩束系统方案进行了初始结构参数的计算及系统优化。对反射镜镀银膜的新望远系统与透镜镀1/4 波长氟化镁的原望远系统的偏振效应进行了模拟分析，望远系统偏振效应的模拟结果表明：基于银膜反射镜的新望远系统在波长最短的410 nm 的偏振效应最大为0.258%，其他波段均低于0.1%，优于或与原系统相当。新望远系统能保证各波段视场统一并满足低偏振效应的条件，可替代原透射望远系统，并提出一种基于新望远系统的偏振探测方案。对新探测方案的优势进行了总结，指出了缺陷及应对措施，并对应用进行了分析。

Abstract

In order to solve the field unification problem of aperture division of multi-angle polarimetric radiometer, and ensure the polarization measurement accuracy. A division of aperture optical path base on reflective telescope is proposed, then select two mirror beam expander program, calculate the initial structure parameters and optimize the system. The polarization effect of the new telescope system with silver mirror and the original telescope system with lens coated with λ/4 MgF2 are simulated and analyzed. The simulation results show that the new telescope system with silver film mirror has 0.258% of the maximum polarization effect at a shortest wavelength of 410 nm, lower than 0.1% at the other bands. It is better than the original system, or quite. The new telescope system can ensure the unity of the field of view of all bands and meet the condition of low polarization effect, and can replace the original transmission telescope system, and a polarization detection method based on the new telescope system is proposed. Finally, the advantages of the new detection method are summarized, and the flaws and countermeasures are pointed out, the application is also analyzed.

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宋茂新, 孙亮, 孙晓兵, 洪津. 多角度偏振辐射计望远系统的新设计[J]. 激光与光电子学进展, 2015, 52(7): 070801. Song Maoxin, Sun Liang, Sun Xiaobing, Hong Jin. New Design of Telescope System for Multi-Angle Polarimetric Radiometer[J]. Laser & Optoelectronics Progress, 2015, 52(7): 070801.

多角度偏振辐射计望远系统的新设计

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