Optimization of optical systems for LED spot lights concerning the color uniformity

Teupner, Anne; Bergenek, Krister; Wirth, Ralph; Miñano Dominguez, Juan Carlos y Benitez Gimenez, Pablo (2014). Optimization of optical systems for LED spot lights concerning the color uniformity. En: "13th International Conference on Solid State Lighting", 20/08/2014 - 21/08/2014, San Diego, California, EE.UU. pp. 1-7. https://doi.org/10.1117/12.2060849.

Descripción

Título: Optimization of optical systems for LED spot lights concerning the color uniformity
Autor/es:
  • Teupner, Anne
  • Bergenek, Krister
  • Wirth, Ralph
  • Miñano Dominguez, Juan Carlos
  • Benitez Gimenez, Pablo
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 13th International Conference on Solid State Lighting
Fechas del Evento: 20/08/2014 - 21/08/2014
Lugar del Evento: San Diego, California, EE.UU
Título del Libro: Proceedings of the SPIE
Título de Revista/Publicación: THIRTEENTH INTERNATIONAL CONFERENCE ON SOLID STATE LIGHTING
Fecha: 2014
Volumen: 9190
Materias:
Palabras Clave Informales: Spot light, color uniformity, non imaging optics, LED illumination, collimation optics
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Electrónica Física
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Spotlighting is one illumination field where the application of light emitting diodes (LED) creates many advantages. Commonly, the system for spot lights consists of a LED light engine and collimating secondary optics. Through angular or spatial separated emitted light from the source and imaging optical elements, a non uniform far field appears with colored rings, dots or patterns. Many feasible combinations result in very different spatial color distributions. Several combinations of three multi-chip light sources and secondary optical elements like reflectors and TIR lenses with additional facets or scattering elements were analyzed mainly regarding the color uniformity. They are assessed by the merit function Usl which was derived from human factor experiments and describes the color uniformity based on the visual perception of humans. Furthermore, the optical systems are compared concerning efficiency, peak candela and aspect ratio. Both types of optics differ in the relation between the color uniformity level and other properties. A plain reflector with a slightly color mixing light source performs adequate. The results for the TIR lenses indicate that they need additional elements for good color mixing or blended light source. The most convenient system depends on the requirements of the application.

Más información

ID de Registro: 36081
Identificador DC: http://oa.upm.es/36081/
Identificador OAI: oai:oa.upm.es:36081
Identificador DOI: 10.1117/12.2060849
Depositado por: Memoria Investigacion
Depositado el: 29 Jul 2015 18:07
Ultima Modificación: 29 Jul 2015 18:07
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