Open AccessCluster LEDs mixing optimization by lens design techniques
Author(s) -
Ming Chin Chien,
Chung−Hao Tien
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.00a804
Subject(s) - color rendering index , light emitting diode , optics , color temperature , luminous efficacy , led lamp , phosphor , illuminance , lens (geology) , rendering (computer graphics) , cluster (spacecraft) , materials science , computer science , optoelectronics , physics , artificial intelligence , layer (electronics) , composite material , programming language
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).