This article discusses the use of light-emitting diodes to generate white light - a research forefront in Physics and Ergonomics. We first present various technological approaches to white-light generation. After a general introduction to the human vision system, we discuss two key aspects of the quality of white light: the color of the light itself, and the color rendering of illuminated objects. We present the tools underlying modern color science, and review key color rendering metrics, from the well-known color rendering index to the latest improvements in the field. (C) 2018 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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