Open AccessImpact of circadian tuning on the illuminance and color uniformity of a multichannel luminaire with spatially optimized LED placement
Author(s) -
Sanush Khyle Abeysekera,
Vineetha Kalavally,
Melanie Po-Leen Ooi,
Ye Chow Kuang
Publication year - 2019
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.381115
Subject(s) - illuminance , optics , light emitting diode , color rendering index , computer science , led lamp , materials science , physics
Potential advantages offered by multichannel luminaires with regards to spectral tuning are frequently overshadowed by its design challenges, a major one being the non-uniformity in illuminance and color distribution. In this paper, we present a formulation using genetic algorithm (GA) to optimize the Light Emitting Diode (LED) placement, yielding 40% superior uniformity in illuminance and color distributions compared to existing analytical formulations, substantially reducing the reliance on optical design for this purpose. It is specifically shown that our approach is employable for circadian tuning applications, even when heavily constrained by industry specifications on panel size and minimum LED separation.