Design of infrared detection sensitivity test equipment based on double black body

Fei Xie; Tao Qi; Peng Zhang

doi:10.1117/12.2625217

27 March 2022 Design of infrared detection sensitivity test equipment based on double black body

Fei Xie, Tao Qi, Peng Zhang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121699G (2022) https://doi.org/10.1117/12.2625217
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

In the infrared detection sensitivity test of optoelectronic products, the black body mostly adopts a single black body structure, and the ambient temperature is obtained by the temperature sensor of the black body close to the aperture aperture, not the aperture aperture to simulate the background temperature. Under the condition of large temperature difference, the black body irradiates the back of the aperture aperture for a long time, which will cause the surface temperature of the aperture aperture to rise and introduce large errors. The infrared detection sensitivity test system based on double black body adopts target black body and background black body to achieve accurate simulation of target and background temperature respectively. The target black body is transmitted through the aperture aperture to complete the target radiation simulation, and the background black body is reflected through the aperture aperture to complete the background radiation simulation. The designed infrared detection sensitivity test system has an optical aperture of Θ500mm, a focal length of 4000mm, a temperature adjustment accuracy of 0.01°C, a field of view of 2°, and an exit radiation uniformity better than 90%. It adopts environmental adaptation design to ensure that it can work under a wide temperature range of -55° ～ 70°, which effectively expands the test range of infrared detection sensitivity testing.

Citation Download Citation

Fei Xie, Tao Qi, and Peng Zhang "Design of infrared detection sensitivity test equipment based on double black body", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121699G (27 March 2022); https://doi.org/10.1117/12.2625217

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