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The design of freeform surface Fresnel lens used for LED uniform illumination
Dai, Yi Dan; Qu, En Shi; Ren, Li Yong; Du, Xin Chao; Ju, Hai Juan
2014
会议录名称Computers and Information Processing Technologies I
页码976-979
出版者Trans Tech Publications Ltd
产权排序1
摘要This paper presents a new kind of light emitting diode(LED) secondary light distribution lens which adopts the type of Fresnel lens surface. The research purpose of this paper is to improve the LED heat dissipation efficiency of the secondary light distribution lens and the light efficiency, so as to prolong the service life of the LED. In this paper, we use the numerical method for solving the partial differential equation to establish a freeform surface lens which could produce uniform illumination, then the innovative method of combine the Fresnel lens structure with freeform surface lens was proposed. The design of freeform surface Fresnel lens allows dramatically cut the thickness of the lens (as well as the weight and volume), it can solve the problem of difficulty in heat dissipation. By comparing the ray tracing simulation results of original freeform surface lens and freeform surface Fresnel lens in optical simulation software, experiments show that the latter not only shows the same degree of illumination uniformity, but also greatly reduced the thickness of the lens. © (2014) Trans Tech Publications, Switzerland.
作者部门信息光子学研究室
收录类别EI
语种英语
ISSN号16609336
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/22628
专题信息光子学研究室
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GB/T 7714
Dai, Yi Dan,Qu, En Shi,Ren, Li Yong,et al. The design of freeform surface Fresnel lens used for LED uniform illumination[C]:Trans Tech Publications Ltd,2014:976-979.
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