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Energy Express

  • Editor: Bernard Kippelen
  • Vol. 19, Iss. S4 — Jul. 4, 2011
  • pp: A804–A817

Cluster LEDs mixing optimization by lens design techniques

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

Optics Express, Vol. 19, Issue S4, pp. A804-A817 (2011)

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This paper presents a methodology analogous to a general lens design rule to optimize step-by-step the spectral power distribution of a white-light LED cluster with the highest possible color rendering and efficiency in a defined range of color temperatures. By examining a platform composed of four single-color LEDs and a phosphor-converted cool-white (CW) LED, we successfully validate the proposed algorithm and suggest the optimal operation range (correlated color temperature = 2600–8500 K) accompanied by a high color quality scale (CQS > 80 points) as well as high luminous efficiency (97% of cluster’s theoretical maximum value).

© 2011 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

Original Manuscript: April 11, 2011
Revised Manuscript: May 18, 2011
Manuscript Accepted: May 23, 2011
Published: June 9, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Ming-Chin Chien and Chung-Hao Tien, "Cluster LEDs mixing optimization by lens design techniques," Opt. Express 19, A804-A817 (2011)

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