Impact of the light source expanded width on optical readout uncooled infrared system

Qian Jia; Yuejin Zhao; Xiaohua Liu; Weiwen Zhu; Ganghua Yin; Liquan Dong

doi:10.1117/12.904695

5 December 2011 Impact of the light source expanded width on optical readout uncooled infrared system

Qian Jia, Yuejin Zhao, Xiaohua Liu, Weiwen Zhu, Ganghua Yin, Liquan Dong

Proceedings Volume 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 81970V (2011) https://doi.org/10.1117/12.904695
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

This paper presents the impact of the light source expanded width on the detection sensitivity in an optical readout uncooled infrared system, which consists of a focal-plane array (FPA) containing bi-material cantilever pixels and reflectors. The relationship between the light source expanded width and the detection sensitivity is discussed based on four different curvatures of reflectors(R=8mm,11mm,25mm,∞). The analysis indicates that the detection sensitivity decreases with the light source expanded width's increment. For the flat reflectors , the detection sensitivity decreases to 90% when the light source expanded width is about 0.64mm. Compared with the flat ones, when the curvatures of reflectors are smaller, the requirement of light source expanded width becomes lower for the sensitivity. The experiment intuitively shows that the image quality by using the light source with 0.05mm size is better than the one with 1mm size, which confirms the first conclusion.

Citation Download Citation

Qian Jia, Yuejin Zhao, Xiaohua Liu, Weiwen Zhu, Ganghua Yin, and Liquan Dong "Impact of the light source expanded width on optical readout uncooled infrared system", Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 81970V (5 December 2011); https://doi.org/10.1117/12.904695

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