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LED照明系统自由曲面透镜设计分析

Design for Freeform Surface Lens of LED Lighting System

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摘要

通过设计基于LED光源的自由曲面透镜实现均匀圆形光斑的实例,提出一种快速建立光学器件模型的方法。该方法根据几何光学和非成像光学理论建立透镜的数学方程,由Matlab实现透镜面型数据的数值计算,由TracePro编程完成透镜建模,以动态数据交换(DDE)协议为基础建立Matlab与TracePro间的会话,可在TracePro中自动创建透镜实体模型。仿真结果表明,光通量为100 lm,光源尺寸1 mm×1 mm,视角120°的LED朗伯型光源在5 m远处的目标面上形成半径为3 m的圆形光斑,光斑照度均匀性可达0.7,透镜效率为87%。与传统实现透镜实体模型的设计方法对比,本方法可以简化设计过程,节省设计时间,进一步证明其准确性和可靠性。

Abstract

By the example of designing freeform lens based on LED light source to achieve uniform circular spot, a new method of establishing optical device model is proposed. According to geometrical optics and non-imaging optics theory, the mathematical model of lens is derived. Numerical calculation of lens surface data is obtained by Matlab, and by TracePro programming the lens modeling is completed, then a conversation between Matlab and TracePro is created with the dynamic data exchange (DDE) protocol. In TracePro, the lens model is automatically created. The ray-tracing simulation results reveal that, the circular spot with the radius of 3 m on the target placed 5 m away is achieved by a LED Lambertian light source which has the luminous flux of 100 lm, size of 1 mm×1 mm and a viewing angle of 120°. The uniformity of illumination reaches 0.7, and the lens efficiency can reach 87%. This method can simplify the design process and save time compared with conventional methods of lens entity model, which further proves its accuracy and reliability.

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中图分类号:O439

DOI:10.3788/lop50.092203

所属栏目:光学设计与制造

基金项目:国家自然科学基金(61204008)、天津市应用基础及前沿技术研究计划(10JCZDJC15400)、国家863计划(2010AA03A1A7)

收稿日期:2013-05-16

修改稿日期:2013-05-21

网络出版日期:2013-08-07

作者单位    点击查看

梁立君:天津工业大学电子与信息工程学院, 天津 300387天津工业大学半导体照明工程研发中心, 天津 300387
牛萍娟:天津工业大学电子与信息工程学院, 天津 300387天津工业大学半导体照明工程研发中心, 天津 300387天津工业大学大功率半导体照明应用系统教育部工程研究中心, 天津 300387
邢海英:天津工业大学电子与信息工程学院, 天津 300387天津工业大学半导体照明工程研发中心, 天津 300387天津工业大学大功率半导体照明应用系统教育部工程研究中心, 天津 300387

联系人作者:梁立君(lianglijunzpp1005@163.com)

备注:梁立君(1987—),男,硕士研究生,主要从事LED照明系统光学设计及其应用方面的研究。

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引用该论文

Liang Lijun,Niu Pingjuan,Xing Haiying. Design for Freeform Surface Lens of LED Lighting System[J]. Laser & Optoelectronics Progress, 2013, 50(9): 092203

梁立君,牛萍娟,邢海英. LED照明系统自由曲面透镜设计分析[J]. 激光与光电子学进展, 2013, 50(9): 092203

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