High-efficiency reflector optics for LED automotive forward lighting

Jianghong Jiao; Ben Wang

doi:10.1117/12.730524

18 September 2007 High-efficiency reflector optics for LED automotive forward lighting

Jianghong Jiao, Ben Wang

Proceedings Volume 6670, Nonimaging Optics and Efficient Illumination Systems IV; 66700M (2007) https://doi.org/10.1117/12.730524
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Although white LED lumen output and luminance have both substantially been increased in the last few years, multiple LEDs are still needed, at present time, to meet automotive forward lighting such as low beam headlamp photometric specifications. Use of multiple LEDs in combination with optics is often constrained by the lamp size. With the goal of minimizing the number of LEDs used in an automotive forward lighting design, further studies have been conducted to optimize reflector optics for the fog lamp and headlamp low beam applications. The studies included different types of LEDs by means of lumen output and effective emitting area. In addition, the system étendue and its optical transformations have been taken into considerations in the studies.

Citation Download Citation

Jianghong Jiao and Ben Wang "High-efficiency reflector optics for LED automotive forward lighting", Proc. SPIE 6670, Nonimaging Optics and Efficient Illumination Systems IV, 66700M (18 September 2007); https://doi.org/10.1117/12.730524

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