高效LED前照灯透镜的设计方法。

Design method of high-efficient  LED headlamp lens.

作者信息

Chen Fei, Wang Kai, Qin Zong, Wu Dan, Luo Xiaobing, Liu Sheng

机构信息

Division of MOEMS, Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

出版信息

Opt Express. 2010 Sep 27;18(20):20926-38. doi: 10.1364/OE.18.020926.

DOI:10.1364/OE.18.020926

PMID:20940988

Abstract

Low optical efficiency of light-emitting diode (LED) based headlamp is one of the most important issues to obstruct applications of LEDs in headlamp. An effective high-efficient LED headlamp freeform lens design method is introduced in this paper. A low-beam lens and a high-beam lens for LED headlamp are designed according to this method. Monte Carlo ray tracing simulation results demonstrate that the LED headlamp with these two lenses can fully comply with the ECE regulation without any other lens or reflector. Moreover, optical efficiencies of both these two lenses are more than 88% in theory.

摘要

基于发光二极管（LED）的前照灯的低光学效率是阻碍LED在前照灯中应用的最重要问题之一。本文介绍了一种有效的高效LED前照灯自由曲面透镜设计方法。根据该方法设计了用于LED前照灯的近光透镜和远光透镜。蒙特卡洛光线追迹模拟结果表明，配备这两种透镜的LED前照灯无需任何其他透镜或反射器即可完全符合欧洲经济委员会（ECE）法规。此外，这两种透镜的光学效率在理论上均超过88%。