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Spectrally tunable light source based on light-emitting diodes for custom lighting solutions
Burgos Fernández, Francisco Javier; Vilaseca Ricart, Meritxell; Perales Romero, Esther; Herrera Ramírez, Jorge Alexis; Martínez Verdú, Francisco Miguel; Pujol Ramo, Jaume
Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria; Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica
This study describes a novel spectral LED-based tunable light source used for customized lighting solutions, especially for the reconstruction of CIE (Commission Internationale de l’Éclairage) standard illuminants. The light source comprises 31 spectral bands ranging from 400 to 700 nm, an integrating cube and a control board with a 16-bit resolution. A minimization algorithm to calculate the weighting values for each channel was applied to reproduce illuminants with precision. The differences in spectral fitting and colorimetric parameters showed that the reconstructed spectra were comparable to the standard, especially for the D65, D50, A and E illuminants. Accurate results were also obtained for illuminants with narrow peaks such as fluorescents (F2 and F11) and a high-pressure sodium lamp (HP1). In conclusion, the developed spectral LED-based light source and the minimization algorithm are able to reproduce any CIE standard illuminants with a high spectral and colorimetric accuracy able to advance available custom lighting systems useful in the industry and other fields such as museum lighting.
Àrees temàtiques de la UPC::Ciències de la visió::Òptica física::Llum
Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Díodes
Light emitting diodes
Lighting
Radiometry
solid-state lighting
light-emitting diodes
CIE standard illuminants
minimization algorithm
customized lighting design
radiometry
Llum
Díodes
Anàlisi espectral
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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