A method to measure internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures

	A method to measure internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures
	Tian, Q. J.; S. T. Chang; Z. Li; F. Y. He and Y. F. Qiao
	2017
发表期刊	Infrared Physics & Technology
卷号	81
摘要	The suppression level of internal stray radiation is a key criterion for infrared imaging systems, especially for high-precision cryogenic infrared imaging systems. To achieve accurate measurement for internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures, a measurement method, which is based on radiometric calibration, is presented in this paper. First of all, the calibration formula is deduced considering the integration time, and the effect of ambient temperature on internal stray radiation is further analyzed in detail. Then, an approach is proposed to measure the internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures. By calibrating the system under two ambient temperatures, the quantitative relation between the internal stray radiation and the ambient temperature can be acquired, and then the internal stray radiation of the cryogenic infrared imaging system under various ambient temperatures can be calculated. Finally, several experiments are performed in a chamber with controllable inside temperatures to evaluate the effectiveness of the proposed method. Experimental results indicate that the proposed method can be used to measure internal stray radiation with high accuracy at various ambient temperatures and integration times. The proposed method has some advantages, such as simple implementation and the capability of high-precision measurement. The measurement results can be used to guide the stray radiation suppression and to test whether the internal stray radiation suppression performance meets the requirement or not. (C) 2016 Elsevier B.V. All rights reserved.
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59229
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Tian, Q. J.,S. T. Chang,Z. Li,et al. A method to measure internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures[J]. Infrared Physics & Technology,2017,81.
APA	Tian, Q. J.,S. T. Chang,Z. Li,&F. Y. He and Y. F. Qiao.(2017).A method to measure internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures.Infrared Physics & Technology,81.
MLA	Tian, Q. J.,et al."A method to measure internal stray radiation of cryogenic infrared imaging systems under various ambient temperatures".Infrared Physics & Technology 81(2017).

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