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Proceedings Paper

A compact LED color mixing scheme with the etendue of a single chip
Author(s): George Ouyang; Kenneth Li
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Paper Abstract

An etendue efficient, prism-based LED color mixing scheme is presented in this paper. The prisms have dichroic coatings deposited on their diagonal surfaces and serve as beam splitters which selectively pass or reflect light of different wavelengths. Light confinement within the prisms is achieved through waveguiding, which is first explained in theory, and then verified by some preliminary experimental results. The compact size of this device makes it especially attractive for miniaturized projector systems.

Paper Details

Date Published: 24 September 2007
PDF: 4 pages
Proc. SPIE 6670, Nonimaging Optics and Efficient Illumination Systems IV, 66700D (24 September 2007); doi: 10.1117/12.737144
Show Author Affiliations
George Ouyang, Wavien, Inc. (United States)
Kenneth Li, Wavien, Inc. (United States)

Published in SPIE Proceedings Vol. 6670:
Nonimaging Optics and Efficient Illumination Systems IV
Roland Winston; R. John Koshel, Editor(s)

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