Influence of particle contamination on the stray radiation performance in infrared optical system

Jianpeng Wu; Jia-qi Peng; Wen-fei Luo; Bin Zhang

doi:10.1117/12.2067971

2 September 2014 Influence of particle contamination on the stray radiation performance in infrared optical system

Jianpeng Wu, Jia-qi Peng, Wen-fei Luo, Bin Zhang

Proceedings Volume 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 92800R (2014) https://doi.org/10.1117/12.2067971
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

The particle contamination on the optical components would degrade the detection performance of the infrared optical systems and even make the detection task failure for the case of the optical components seriously contamitated. With the use of ASAP optical analysis software, a typical infrared optical-mechanical three-dimensional stimulation model has been built up. The particle distributions on the surface of the optical components have been studied and the particle distribution model has also been given. Furthermore, the influence of particle contamination on the stray light radiation characteristic of the infrared optical system has been analyzed in detail. The result shows that contamination particles randomly undergo collisions and small particles are loosely attached to each other at their first contact location and finally deposited as random single-particle aggregation and cluster-cluster aggregation, resulting in an obviously affect on the stray radiation performance of the infrared optical system. Furthermore, the change of the deposition positions of the contaminants aggregation also has a certain influence on the stray light radiation characteristics. In practical applications, it seems particularly important to control strictly over the contamination of optical surface during the operation of the infrared optical system.

Citation Download Citation

Jianpeng Wu, Jia-qi Peng, Wen-fei Luo, and Bin Zhang "Influence of particle contamination on the stray radiation performance in infrared optical system", Proc. SPIE 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 92800R (2 September 2014); https://doi.org/10.1117/12.2067971

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KEYWORDS

Mirrors

Particles

Infrared radiation

Infrared imaging

Scattering

Contamination

3D modeling

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