A Novel LED Automotive Headlamp applied for US DOT Certifications

  This paper introduces a novel optical system for LED automotive headlamp which can meet SAE US national standard (US DOT certifications).The optical system consists of three parts: a Low beam part, a high beam part and a background lighting part.Two special designed light pipes are applied for both Low beam part and High beam part optics with separate collimating optics, which can cast a very shape cutoff illumination and to meet the special light distribution defined by the DOT certification.The background lighting optics that designed by freeform optics with microstructures on the top surface, is used for rear light and lighted with either the Low beam part or the High beam part.Only 6 CREE XQE High Intensity LEDs with 700lm per device are used.The design methods are introduced and performances of the optical system are demonstrated by simulation that all requirements in the regulation can be fulfilled.

作者单位: Foshan Institute of Sun Yat-sen University,Guangzhou,P.R.China Guangzhou Longhua Industry Design Co.LTD,Guangzhou,P.R.China
母体文献: 第五届中国国际汽车照明论坛论文集
会议名称: 第五届中国国际汽车照明论坛
会议时间: 2017年1月1日
会议地点: 上海
主办单位: 中国照明学会,中国汽车工业协会
语 种: eng
在线出版日期: 2017年8月31日