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.
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.
Mot clés : Diode electro-luminescente, Eclairage a l'etat solide, Eclairage, Colorimetrie, Rendu des couleurs
Aurélien David 1; Lorne A. Whitehead 2
@article{CRPHYS_2018__19_3_169_0,
author = {Aur\'elien David and Lorne A. Whitehead},
title = {LED-based white light},
journal = {Comptes Rendus. Physique},
pages = {169--181},
publisher = {Elsevier},
volume = {19},
number = {3},
year = {2018},
doi = {10.1016/j.crhy.2018.02.004},
language = {en},
}
Aurélien David; Lorne A. Whitehead. LED-based white light. Comptes Rendus. Physique, Volume 19 (2018) no. 3, pp. 169-181. doi : 10.1016/j.crhy.2018.02.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2018.02.004/
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