Optical design and fabrication of palm/fingerprint uniform illumination system with a high-power near-infrared light-emitting diode

	Optical design and fabrication of palm/fingerprint uniform illumination system with a high-power near-infrared light-emitting diode
	Jing, L.; Y. Wang; H. F. Zhao; H. L. Ke; X. X. Wang and Q. Gao
	2017
发表期刊	Applied Optics
卷号	56 期号:17
摘要	In order to meet the requirements of uniform illumination for optical palm/fingerprint instruments and overcome the shortcomings of the poor uniform illumination on the working plane of the optical palm/fingerprint prism, a novel secondary optical lens with a free-form surface, compact structure, and high uniformity is presented in this paper. The design of the secondary optical lens is based on emission properties of the near-infrared light-emitting diode (LED) and basic principles of non-imaging optics, especially considering the impact of the thickness of the prism in the design. Through the numerical solution of Snell's law in geometric optics, we obtain the profile of the free-form surface of the lens. Using the optical software TracePro, we trace and simulate the illumination system. The results show that the uniformity is 89.8% on the working plane of the prism, and the test results show that the actual uniformity reaches 85.7% in the experiment, which provides an effective way for realizing a highly uniform illumination system with high-power near-infrared LED. (C) 2017 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/181722/58968
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Jing, L.,Y. Wang,H. F. Zhao,et al. Optical design and fabrication of palm/fingerprint uniform illumination system with a high-power near-infrared light-emitting diode[J]. Applied Optics,2017,56(17).
APA	Jing, L.,Y. Wang,H. F. Zhao,H. L. Ke,&X. X. Wang and Q. Gao.(2017).Optical design and fabrication of palm/fingerprint uniform illumination system with a high-power near-infrared light-emitting diode.Applied Optics,56(17).
MLA	Jing, L.,et al."Optical design and fabrication of palm/fingerprint uniform illumination system with a high-power near-infrared light-emitting diode".Applied Optics 56.17(2017).

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