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Comptes Rendus Physique
Volume 19, n° 3
pages 169-181 (mars 2018)
Doi : 10.1016/j.crhy.2018.02.004
LED-based white light
Les sources de lumière blanche à base de LED
 

Aurélien David a, , Lorne A. Whitehead b
a Soraa Inc., 6500 Kaiser Dr., Fremont, CA 94555, USA 
b Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada 

Corresponding author.
Abstract

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.

The full text of this article is available in PDF format.
Résumé

Cet article présente l'utilisation des diodes électroluminescentes comme sources de lumière blanche – un sujet à la pointe de la recherche en physique et en ergonomie. Nous présentons d'abord diverses approches technologiques à la génération de lumière blanche. Après une introduction générale au système visuel humain, nous discutons deux aspects cruciaux de la qualité de la lumière : la couleur intrinsèque de celle-ci et le rendu des couleurs des objets illuminés. Nous présentons les outils sous-jacents à la colorimétrie moderne, et examinons les principales métriques du rendu des couleurs : le CRI, ainsi que les derniers progrès dans le domaine.

The full text of this article is available in PDF format.

Keywords : Light emitting diode, Solid-state lighting, Lighting, Color science, Color rendering

Mots-clés : Diode electro-luminescente, Eclairage a l'etat solide, Eclairage, Colorimetrie, Rendu des couleurs




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