Design of secondary optics for IRED in active night vision systems

	Design of secondary optics for IRED in active night vision systems
	Xin D.; Liu H.; Jing L.; Wang Y.; Xu W. B.; Lu Z. W.
	2013
发表期刊	Optics Express
ISSN	ISBN/1094-4087
卷号	21 期号:1
摘要	An effective optical design method is proposed to solve the problem of adjustable view angle for infrared illuminator in active night vision systems. A novel total internal reflection (TIR) lens with three segments of the side surface is designed as the secondary optics of infrared emitting diode (IRED). It can provide three modes with different view angles to achieve a complete coverage of the monitored area. As an example, a novel TIR lens is designed for SONY FCB-EX 480CP camera. Optical performance of the novel TIR lens is investigated by both numerical simulation and experiments. The results demonstrate that it can meet the requirements of different irradiation distances quit well with view angles of 7.5 degrees, 22 degrees and 50 degrees. The mean optical efficiency is improved from 62% to 75% and the mean irradiance uniformity is improved from 65% to 85% compared with the traditional structure. (c) 2013 Optical Society of America
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/181722/40610
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Xin D.,Liu H.,Jing L.,et al. Design of secondary optics for IRED in active night vision systems[J]. Optics Express,2013,21(1).
APA	Xin D.,Liu H.,Jing L.,Wang Y.,Xu W. B.,&Lu Z. W..(2013).Design of secondary optics for IRED in active night vision systems.Optics Express,21(1).
MLA	Xin D.,et al."Design of secondary optics for IRED in active night vision systems".Optics Express 21.1(2013).

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