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Proceedings Paper

Impact of the light source expanded width on optical readout uncooled infrared system
Author(s): Qian Jia; Yuejin Zhao; Xiaohua Liu; Weiwen Zhu; Ganghua Yin; Liquan Dong
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Paper 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.

Paper Details

Date Published: 5 December 2011
PDF: 8 pages
Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 81970V (5 December 2011); doi: 10.1117/12.904695
Show Author Affiliations
Qian Jia, Beijing Institute of Technology (China)
Yuejin Zhao, Beijing Institute of Technology (China)
Xiaohua Liu, Beijing Institute of Technology (China)
Weiwen Zhu, Beijing Institute of Technology (China)
Ganghua Yin, Beijing Institute of Technology (China)
Liquan Dong, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 8197:
2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Yongtian Wang; Yunlong Sheng; Han-Ping Shieh; Kimio Tatsuno, Editor(s)

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