2008•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access

LED light source for projection displays

George Ouyang, Kenneth Li

Abstract

Two novel LED recycling schemes using either recycling light pipes or recycling "collars" show promise in significantly increasing the brightness of the LED sources. Preliminary experimental data show significant brightness enhancement, especially with a relatively high chip reflectivity and/or high mirror blockage factor. Further improvement may be expected when various system parameters are optimized.

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Available abstract

Key concepts: Brightness, Light source, Reflectivity, Projection (relational algebra), Optics, Light-emitting diode, Computer science, Chip