Diode-laser-illuminated automotive lamp systems

Michael A. Marinelli; Jeffrey T. Remillard

doi:10.1117/12.307604

4 May 1998 Diode-laser-illuminated automotive lamp systems

Michael A. Marinelli, Jeffrey T. Remillard

Proceedings Volume 3285, Fabrication, Testing, Reliability, and Applications of Semiconductor Lasers III; (1998) https://doi.org/10.1117/12.307604
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

We have utilized the high brightness of state-of-the-art diode laser sources, and a variety of emerging optical technologies to develop a new class of thin, uniquely styled automotive brake and signal lamps. Using optics based on thin (5 mm) plastic sheets, these lamps provide appearance and functional advantages not attainable with traditional automotive lighting systems. The light is coupled into the sheets using a 1 mm diameter glass fiber, and manipulated using refraction and reflection from edges, surfaces, and shaped cut-outs. Light can be extracted with an efficiency of approximately 50% and formed into a luminance distribution that meets the Society of Automotive Engineers (SAE) photometric requirements. Prototype lamps using these optics have been constructed and are less than one inch in thickness. Thin lamps reduce sheet metal costs, complexity, material usage, weight, and allow for increased trunk volume. In addition, these optics enhance lamp design flexibility. When the lamps are not energized, they can appear body colored, and when lighted, the brightness distribution across the lamp can be uniform or structured. A diode laser based brake lamp consumes seven times less electrical power than one using an incandescent source and has instant on capability. Also, diode lasers have the potential to be 10-year/150,000 mile light sources.

Citation Download Citation

Michael A. Marinelli and Jeffrey T. Remillard "Diode-laser-illuminated automotive lamp systems", Proc. SPIE 3285, Fabrication, Testing, Reliability, and Applications of Semiconductor Lasers III, (4 May 1998); https://doi.org/10.1117/12.307604

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