Secondary Light Distribution Design for LED Street Light

摘要：

The secondary optics design is a critical issue for the light distribution and output efficiency of the LED street light. Traditional light distribution methods are simple but difficult to get high energy efficiency and illumination uniformity together. In this paper, the adoption of the unsymmetrical freeform surface lens can obtain a rectangular light distribution pattern just cover the road with little waste of light. In this paper, an unsymmetrical freeform optic lens is designed which is combining with theory of non-imaging optics and freeform surface. The result shows that light energy efficiency and illumination uniformity under the freeform surface lens can reach 81％ and 77％ respectively.

关键词： LED street light freeform surface energy efficiency illumination uniformity

作者: Kai Yang Jidong Song Yuqing Chen Bin Lin

作者单位: College of Optical and Electronic Technology, China JiLiang University National Engineering Research National Engineering Research Center for Optical Instrument, Zhejiang University Hangzhou Zhejiang,

会议类型: 国际会议

会议名称: 2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)

会议地点: 大连

会议语种:英文

页码: 378-381

在线出版日期: 2011-07-29（万方平台首次上网日期，不代表论文的发表时间）