Caractérisation du rendu des couleurs des nouvelles sources : les diodes électroluminescentes (LED)

Abstract : The development of high power LEDs in the early 2000s have generated a need for characterization of radiometric, photometric and colorimetric properties of light sources, essentially oriented towards general lighting applications. The optical radiation team from the « Institut national de métrologie » leaned over these three aspects while working on the quality of light through colour rendering related to visual perception. Studies were conducted from physical and visual measurements on samples illuminated by LED lightings mounted in a light booth. Physical measurements focused on spectral distribution from which colorimetric parameters (chromaticity coordinates, correlated colour temperature, colour rendering indexes) have been evaluated. The metrological analysis of the experimental data was performed using a numerical method of Monte Carlo. Visual measurements were obtained from a psychophysical experiment based on a pair comparisons method. It allowed to quantify LED lightings quality over colored samples. For each sample, a classification of the LED lightings, from best to worst, could be proposed. Confrontation between results issued from physical and visual measurements led to propose some ideas to quantify the colour rendering of LED lightings. Obtained results were submitted to the technical committee TC 1-69 of the international commission on illumination (CIE), whose task is to define a new recommendation for the evaluation of the colour rendering properties of light sources within the year 2010.
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https://tel.archives-ouvertes.fr/tel-00452845
Contributor : Nicolas Pousset <>
Submitted on : Wednesday, February 3, 2010 - 10:57:19 AM
Last modification on : Wednesday, March 20, 2019 - 4:51:13 PM
Long-term archiving on : Friday, June 18, 2010 - 6:36:48 PM

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Nicolas Pousset. Caractérisation du rendu des couleurs des nouvelles sources : les diodes électroluminescentes (LED). Physique [physics]. Conservatoire national des arts et métiers, 2009. Français. ⟨tel-00452845⟩

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