19 October 2016 Analysis of stray radiation for infrared optical system
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Proceedings Volume 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation; 1015404 (2016) https://doi.org/10.1117/12.2243752
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Based on the theory of radiation energy transfer in the infrared optical system, two methods for stray radiation analysis caused by interior thermal radiation in infrared optical system are proposed, one of which is important sampling method technique using forward ray trace, another of which is integral computation method using reverse ray trace. The two methods are discussed in detail. A concrete infrared optical system is provided. Light-tools is used to simulate the passage of radiation from the mirrors and mounts. Absolute values of internal irradiance on the detector are received. The results shows that the main part of the energy on the detector is due to the critical objects which were consistent with critical objects obtained by reverse ray trace, where mirror self-emission contribution is about 87.5% of the total energy. Corresponding to the results, the irradiance on the detector calculated by the two methods are in good agreement. So the validity and rationality of the two methods are proved.
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Yang Li, Yang Li, Tingcheng Zhang, Tingcheng Zhang, Zhibo Liao, Zhibo Liao, Shengbo Mu, Shengbo Mu, Jianxiang Du, Jianxiang Du, Xiangdong Wang, Xiangdong Wang, } "Analysis of stray radiation for infrared optical system", Proc. SPIE 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation, 1015404 (19 October 2016); doi: 10.1117/12.2243752; https://doi.org/10.1117/12.2243752

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