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LED Headlamps - Highly Efficient Optical Systems
Technical Paper
2005-01-0860
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In recent years the efficiency of Light Emitting Diodes (LEDs) has increased rapidly. Using red, amber or white LEDs for exterior automobile rear lighting is already state of the art and offers new styling possibilities. Since up to 70 lm / Watt and 150 lm / LED for white LEDs are predicted, they become interesting for headlamp functions like low and high beam. Therefore new styles and technical solutions are feasible. Nevertheless, creating a full LED headlamp is still challenging.
New high efficient optical design methods to create front signal functions like daytime running light or turn indicator weather with medium bright LEDs (1 lm to 10 lm per LED) or with high bright LEDs (30 lm to 100 lm per LED) will be discussed.
A space optimized full LED headlamp, which fulfills the regulations but consume much less space compared to halogen headlamps will be presented.
A light performance optimized full LED headlamp, which reaches xenon headlamp performance and fits in a current headlamp housing will be shown.
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Authors
Citation
Ackermann, R., "LED Headlamps - Highly Efficient Optical Systems," SAE Technical Paper 2005-01-0860, 2005, https://doi.org/10.4271/2005-01-0860.Also In
References
- LumiLeds Technical Datasheet DS 46
- LumiLeds Technical Datasheet DS 25
- LumiLeds application briefs www.lumileds.com
- LumiLeds technical data sheeds www.lumileds.com
- LED support database Osram OS
- Reill Joachim Bogner Georg Potential Use of LEDs in forward Lighting Progress in Automotive Lighting 2003 841 850
- Ackermann R. Automotive LED Applications 2 nd International Symposium on Nanotechnology and LEDs 2003
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- Ackermann R. LED Headlamps - Possibilities and Problems Progress in Automotive Lighting 2003 1 10