Use of light-emitting diodes in multispectral systems design: variability of spectral power distribution according to angle and time of usage

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/14446

dc.contributor	Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria
dc.contributor	Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica
dc.contributor.author	Martínez, Oscar
dc.contributor.author	Vilaseca Ricart, Meritxell
dc.contributor.author	Arjona Carbonell, Mª Montserrat
dc.contributor.author	Pizarro Bondia, Carlos
dc.contributor.author	Pujol Ramo, Jaume
dc.date	2011
dc.identifier.citation	Martínez, O. [et al.]. Use of light-emitting diodes in multispectral systems design: variability of spectral power distribution according to angle and time of usage. "Journal of imaging science and technology", 2011, vol. 55, núm. 5, p. 050501-1-050501-8.
dc.identifier.citation	8750-9237
dc.identifier.citation	10.2352/J.ImagingSci.2011.55.5.050501
dc.identifier.uri	http://hdl.handle.net/2117/14446
dc.language.iso	eng
dc.relation	http://jist.imaging.org/resource/1/jimte6/v55/i5
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria electrònica::Optoelectrònica
dc.subject	Light-emitting devices
dc.subject	Imaging detectors and sensors
dc.subject	Imatges -- Processament -- Tècniques digitals
dc.title	Use of light-emitting diodes in multispectral systems design: variability of spectral power distribution according to angle and time of usage
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Multispectral systems allow the spectral and color characterization of objects using images obtained from several acquisition channels with different spectral sensitivities. Light sources based on light-emitting diodes have started to be used in multispectral systems, mainly to develop low-cost devices for the industry. In this study, the authors examine the variability of spectral power distribution according to the viewing angle of white and single color light-emitting diodes, which can have a significant impact on spectral and color accuracy. This must be taken into account if they are to be used in multispectral systems design. The spectrum drift according to the time of usage of white light-emitting diodes is also analyzed.
dc.description.abstract	Peer Reviewed

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