Multispectral mixing scheme for LED clusters with extended operational temperature window | Zendy

Ming-Chin Chien | Zendy; Chung-Hao Tien | Zendy

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Multispectral mixing scheme for LED clusters with extended operational temperature window

Author(s) -

Ming-Chin Chien,

Chung-Hao Tien

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.00a245

Subject(s) - chromaticity , color rendering index , optics , computer science , color temperature , multispectral image , light emitting diode , rendering (computer graphics) , led lamp , thermal , luminous efficacy , materials science , physics , computer graphics (images) , computer vision , meteorology , layer (electronics) , composite material

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).

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