Fast Design of High Optical Collection Efficiency LED Lens for Rectangular Collimated Beam

LIU Dian-hong; ZHANG Xiao-hui; ZHANG Shuang

doi:10.3788/fgxb20173807.0960

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Fast Design of High Optical Collection Efficiency LED Lens for Rectangular Collimated Beam

更新时间：2020-08-12

- Fast Design of High Optical Collection Efficiency LED Lens for Rectangular Collimated Beam
- Chinese Journal of Luminescence Vol. 38, Issue 7, Pages: 960-966(2017)
- 作者机构：
  
  海军工程大学兵器工程系, 湖北武汉 430033
- 作者简介：
- 基金信息：
  
  Supported by Navy Scientific Research Foundation of China (417210973)
- DOI：10.3788/fgxb20173807.0960
  CLC： O439
- Received：08 December 2016，
  
  Revised：07 February 2017，
  
  Published：05 July 2017
- 稿件说明：
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刘典宏, 张晓晖, 张爽. 快速实现矩形准直光束的高集光效率LED透镜设计[J]. 发光学报, 2017,38(7): 960-966

LIU Dian-hong, ZHANG Xiao-hui, ZHANG Shuang. Fast Design of High Optical Collection Efficiency LED Lens for Rectangular Collimated Beam[J]. Chinese Journal of Luminescence, 2017,38(7): 960-966
刘典宏, 张晓晖, 张爽. 快速实现矩形准直光束的高集光效率LED透镜设计[J]. 发光学报, 2017,38(7): 960-966 DOI： 10.3788/fgxb20173807.0960.

LIU Dian-hong, ZHANG Xiao-hui, ZHANG Shuang. Fast Design of High Optical Collection Efficiency LED Lens for Rectangular Collimated Beam[J]. Chinese Journal of Luminescence, 2017,38(7): 960-966 DOI： 10.3788/fgxb20173807.0960.

摘要

为了实现LED矩形准直光束，提出一种快速构建高集光效率LED透镜的设计方法。基于分步法、边缘光线定理和几何光学定律，分步设计两个自由曲面轮廓线，快速获取两个自由曲面并构建透镜。结果表明：当LED距透镜内曲面尺寸与LED尺寸的比值为6时，系统的半峰全宽为2.31.15，集光效率为82.6%，可以有效地实现矩形准直光束。随着比值的增大，透镜的尺寸变大，但是半峰全宽变小，透镜集光效率变高。根据设计参数加工了透镜并对仿真结果进行了实验验证。该方法为实现LED矩形准直光束提供了一种有效途径。

Abstract

In order to realize LED rectangular collimated beam

a fast design method for LED lens with high optical collection efficiency was presented. Two free-form surface contours were designed based on step-by-step method

edge ray theory and geometrical optics law. Based on them

two free-form surfaces were obtained quickly and the lens was constructed. When the ratio of the length between lens inner surface and LED to the LED size is 6

the full width at half maximum (FWHM) of the system is 2.31.15

and the light collection efficiency is about 82.6%

which can effectively realize rectangular collimated beam. As the ratio increases

the size of the lens becomes larger

the FWHM becomes smaller

and the collection efficiency of the lens becomes higher. According to the design parameters

a lens was manufactured and the simulation results were experimentally verified. This method provides an effective way to realize the rectangle collimated beam of LED.

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references

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