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Proceedings Paper

Computational lighting by an LED-based system
Author(s): Ming-Chin Chien; Chung-Hao Tien
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Paper Abstract

A methodology analogous to a general lens design rule was proposed to step-by-step optimize the spectral power distribution (SPD) of a composite light-emitting diodes (LEDs) cluster. The computation is conducted for arbitrary SPD combination for the applications in radiometry, photometry and colorimetry, respectively. Based on the matrix computation, a spectrally tunable source is implemented to strategically manipulate the chromaticity, system efficiency and light quality according to all kinds of operational purposes. By the R/G/B/A/CW light engine with graphic utility interface, the cluster engine was experimentally validated to offer a wide-ranged operation in ambient temperature (Ta = 10°C to 100°C) with high color quality scale (CQS < 85 points) as well as high luminous efficiency (LE < 100 lm/watt) over the chromaticity point from 2800K to 8000K.

Paper Details

Date Published: 11 October 2012
PDF: 7 pages
Proc. SPIE 8486, Current Developments in Lens Design and Optical Engineering XIII, 84860R (11 October 2012); doi: 10.1117/12.964664
Show Author Affiliations
Ming-Chin Chien, National Chiao Tung Univ. (Taiwan)
Chung-Hao Tien, National Chiao Tung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 8486:
Current Developments in Lens Design and Optical Engineering XIII
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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