27 February 2014 Thermal, optical, and electrical engineering of an innovative tunable white LED light engine
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Abstract
Color temperature, intensity and blue spectrum of the light affects the ganglion receptors in human brain stimulating the human nervous system. With this work we review different methods for obtaining tunable light emission spectra and propose an innovative white LED lighting system. By an in depth study of the thermal, electrical and optical characteristics of GaN and GaP based compound semiconductors for optoelectronics a specific tunable spectra has been designed. The proposed tunable white LED system is able to achieve high CRI (above 95) in a large CCT range (3000 - 5000K).
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Nicola Trivellin, Matteo Meneghini, Marco Ferretti, Diego Barbisan, Matteo Dal Lago, Gaudenzio Meneghesso, Enrico Zanoni, "Thermal, optical, and electrical engineering of an innovative tunable white LED light engine", Proc. SPIE 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII, 90031B (27 February 2014); doi: 10.1117/12.2040599; https://doi.org/10.1117/12.2040599
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