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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S2 — Mar. 12, 2012
  • pp: A245–A254

Multispectral mixing scheme for LED clusters with extended operational temperature window

Ming-Chin Chien and Chung-Hao Tien  »View Author Affiliations


Optics Express, Vol. 20, Issue S2, pp. A245-A254 (2012)
http://dx.doi.org/10.1364/OE.20.00A245


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Abstract

LEDs have changed the concept of illumination not only in an expectation of the highest electroluminance efficiency but also in tremendous chances for smart lighting applications. With a cluster mixing, many studies were addressed to strategically manipulate the chromaticity point, system efficiency and color rendering performance according to different operational purposes. In this paper, we add an additional thermal function to extend the operational thermal window of a pentachromatic R/G/B/A/CW light engine over a chromaticity from 2800K to 8000K. The proposed model is experimentally validated to offer a full operable range in ambient temperature (Ta = 10° to 100°C) associated with high color quality scale (above 85 points) as well as high luminous efficiency (above 100 lm/watt).

© 2012 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(330.1690) Vision, color, and visual optics : Color
(330.1715) Vision, color, and visual optics : Color, rendering and metamerism

ToC Category:
Light-Emitting Diodes

History
Original Manuscript: December 2, 2011
Revised Manuscript: January 2, 2012
Manuscript Accepted: January 3, 2012
Published: January 31, 2012

Citation
Ming-Chin Chien and Chung-Hao Tien, "Multispectral mixing scheme for LED clusters with extended operational temperature window," Opt. Express 20, A245-A254 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-S2-A245


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