Design for LED free surface lens with small angle based on extended source

Q4 Physics and Astronomy

光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144001.0045

薛涛 Xue Tao, 苏成悦 Su Chengyue, 张康 Zhang Kang, 张春华 Zhang Chun-hua, 付倩 Fu Qian

引用次数: 0

Abstract

A design algorithm of free surface lens based on extended source that can realize uniform illumination with small angle is presented.The energy correspondence between the extended source and the target plane is established.Using the edge-ray principle of nonimaging optics,a number of discrete points of the freeform profile curve is calculated and fitted to lens entity.By using non-sequential ray tracing to simulate lens with different light source size,under the premise of uniform illumination,the impact of the size of the light source for emitting angle is discussed.The simulation results show that the optical system can achieve uniform illumination with extended source and divergence angle can be controlled to its minimum angle.

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基于扩展光源的小角度LED自由曲面透镜设计

提出了一种基于扩展光源的自由曲面透镜设计算法，实现了小角度均匀照明。建立了扩展源与目标平面的能量对应关系。利用非成像光学的边缘射线原理，计算了自由曲面的若干离散点，并将其拟合到透镜实体上。通过对不同光源尺寸的透镜进行非顺序光线追踪模拟，在照度均匀的前提下，讨论了光源尺寸对发射角的影响。仿真结果表明，该光学系统可以实现扩展光源的均匀照明，发散角可以控制在最小角度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".