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Simple dynamic energy core equivalent rays method to design freeform surface for extended source

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Abstract

A simple method is proposed to design freeform surface for Lambertian extended source. In this method, it can take advantage of the designing method for point source via substituting each incident ray with a dynamically calculated equivalent ray. For each facet on the freeform surface, the equivalent ray emits from the energy weighted average-emitting-position for the corresponding incident beam, and redirects into the direction which is determined by a source-to-target mapping. The results of the designing examples show that the light distributions’ uniformities can be improved by this method, e.g., even the improvement of 59% can be achieved.

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DOI:10.1007/s12200-016-0619-y

所属栏目:RESEARCH ARTICLE

基金项目:This work was supported by the National Key Basic Research Program of China (Nos. 2015CB351900, 2011CB301902 and 2011CB301903), the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (No. 2012BAE01B03), the Science and Technology Planning Project of Guangdong Province (No. 2011A081301003), the Opened Fund of the State Key Laboratory on Integrated Optoelectronics (No. IOSKL2012KF09), the High Technology Research and Development Program of China (Nos. 2011AA03A112, 2011AA03A106 and 2011AA03A105), the National Natural Science Foundation of China (Grant Nos. 61307024, 61176015 and 61176059).

收稿日期:2016-02-02

修改稿日期:2016-02-18

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作者单位    点击查看

Kun WANG:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yanjun HAN:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Hongtao LI:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yi LUO:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Zhibiao HAO:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Lai WANG:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Changzheng SU:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Bing XIONG:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Jian WANG:Tsinghua National Lab on Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

联系人作者:Yanjun HAN(yjhan@tsinghua.edu.cn)

备注:KunWang received her Ph.D. degree in electronic engineering from Tsinghua University, Beijing, China, in 2015. She received her B.S. degree from the Xidian University in 2009. Her research presently focuses on the LED lighting devices designing, especially the freeform surface designing method for extended source.

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引用该论文

Kun WANG,Yanjun HAN,Hongtao LI,Yi LUO,Zhibiao HAO,Lai WANG,Changzheng SUN,Bing XIONG,Jian WANG. Simple dynamic energy core equivalent rays method to design freeform surface for extended source[J]. Frontiers of Optoelectronics, 2016, 9(2): 330-337

Kun WANG,Yanjun HAN,Hongtao LI,Yi LUO,Zhibiao HAO,Lai WANG,Changzheng SU,Bing XIONG,Jian WANG. Simple dynamic energy core equivalent rays method to design freeform surface for extended source[J]. Frontiers of Optoelectronics, 2016, 9(2): 330-337

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