基于双自由曲面的LED均匀照明准直透镜设计

赵欢; 李长庚; 陈志涛; 张志清; 赵维; 王君君

doi:doi:10.3788/aos201737.0422001

光学学报, 2017, 37 (4): 0422001, 网络出版: 2017-04-10

基于双自由曲面的LED均匀照明准直透镜设计下载： 668次

Design of Collimating Lens with Uniform Illumination for LED Based on Double Freeform Surface

论文大纲

赵欢 ^1,2,*李长庚 ¹陈志涛 ²张志清 ²赵维 ²王君君 ²

作者单位

¹ 中南大学物理与电子学院, 湖南长沙 410012

² 广东省半导体产业技术研究院, 广东广州 510651

光学设计双自由曲面算法设计蒙特卡罗光线追迹准直透镜 optical design double freeform surface algorithm design Monte Carlo ray tracing collimating lens

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摘要

基于几何光学、能量守恒定律及菲涅耳定律等相关理论，提出了一种双自由曲面半导体发光二极管(LED)准直透镜的光学设计方法，并给出了构建准直透镜模型详细的算法设计。自由曲面是一种关于中心轴旋转对称的曲面，该曲面的二维轮廓在非均匀有理B样条曲线的方法理论基础上，采用ProE软件搭建而成。通过蒙特卡罗光线追迹模拟发现，相比传统的单自由曲面准直透镜，双自由曲面准直透镜不仅提高了照度均匀性，而且在能量利用率上也有显著的提高。研究结果表明，采用双自由曲面将大大提升准直透镜的设计空间，改善LED透镜的光学性能。

Abstract

An optical design of double freeform surface semiconductor light-emitting diode (LED) collimating lens is proposed based on relevant theories such as geometrical optics, law of energy conservation, and the Fresnel′s law. Detailed algorithm design for constructing collimating lens model is presented as well. A freeform surface is a surface that is rotationally symmetric around a central axis. The 2D contour of this surface is constructed on the basis of non-uniform rational B-splines (NURBS) method and by ProE software. Through Monte Carlo ray tracing simulation, it is found that, compared with conventional single freeform surface collimating lens, double freeform surface collimating lens has greatly enhanced the illumination uniformity as well as the energy utilization. The research results have shown that, by using double freeform surface design, the design space can be remarkably extended, and the optical performance of collimating lens can be improved.

参考文献

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赵欢, 李长庚, 陈志涛, 张志清, 赵维, 王君君. 基于双自由曲面的LED均匀照明准直透镜设计[J]. 光学学报, 2017, 37(4): 0422001. Zhao Huan, Li Changgeng, Chen Zhitao, Zhang Zhiqing, Zhao Wei, Wang Junjun. Design of Collimating Lens with Uniform Illumination for LED Based on Double Freeform Surface[J]. Acta Optica Sinica, 2017, 37(4): 0422001.

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基于双自由曲面的LED均匀照明准直透镜设计下载： 668次