Side-emitting high-power LEDs and their application in illumination

Robert Scott West

doi:10.1117/12.457155

26 November 2002 Side-emitting high-power LEDs and their application in illumination

Robert Scott West

Proceedings Volume 4776, Solid State Lighting II; (2002) https://doi.org/10.1117/12.457155
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Due to the rapid increase in flux performance from High Power LED's, illumination is an exciting growth market for solid state lighting. Today a white LED is 100+ Lm per device. This is approximately an order of magnitude below the kLm metric used for illumination applications. The radiation pattern from the LED is key in increasing the usable flux resulting in improved systems optical performance. This advancement in radiation pattern will allow new market opportunities, which were not yet feasible. In the future this effect of usable lumens will become more important as the flux per package increases. The radiation pattern of the LEDs can be controlled to optimize performance, appearance, and shape of the secondary optics. This advantage is unique to LEDs and can greatly improve system performance, control, and cosmetic appeal for the application. This paper will review the side emitting lens design, the integrated performance of this technology to secondary optics and how the Luxeon side emitter enables improved performance by creating more useable lumens.

Citation Download Citation

Robert Scott West "Side-emitting high-power LEDs and their application in illumination", Proc. SPIE 4776, Solid State Lighting II, (26 November 2002); https://doi.org/10.1117/12.457155

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