Freeform TIR collimators for the removal of angular color variation in white LED spotlights

C.R. Prins, C. Schneider, W.L. IJzerman, T.W. Tukker, J.H.M. Thije Boonkkamp, ten

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Angular color variation in white, phosphor-converted LEDs causes undesirable yellow rings in the beams of spotlights. We developed an inverse method to design TIR collimators that remove the angular color variation for point light sources and significantly reduce color variation for extended light sources, without the need for facets, holographic foils or scattering surfaces. We performed several numerical simulations to evaluate the performance of this point source method for extended light sources.
Originele taal-2Engels
TitelProceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013)
RedacteurenR. Winston, J. Gordon
Plaats van productieWashington
UitgeverijSPIE
Pagina's88340J/1-10
ISBN van geprinte versie978-081949684-3
DOI's
StatusGepubliceerd - 2013
Evenementconference; Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X; 2013-08-25; 2013-08-26 -
Duur: 25 aug 201326 aug 2013

Publicatie series

NaamProceedings of SPIE
Volume8834
ISSN van geprinte versie0277-786X

Congres

Congresconference; Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X; 2013-08-25; 2013-08-26
Periode25/08/1326/08/13
AnderNonimaging Optics : Efficient Design for Illumination and Solar Concentration X

Vingerafdruk

collimators
light sources
light emitting diodes
color
point sources
phosphors
flat surfaces
foils
causes
rings
scattering
simulation

Citeer dit

Prins, C. R., Schneider, C., IJzerman, W. L., Tukker, T. W., & Thije Boonkkamp, ten, J. H. M. (2013). Freeform TIR collimators for the removal of angular color variation in white LED spotlights. In R. Winston, & J. Gordon (editors), Proceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013) (blz. 88340J/1-10). (Proceedings of SPIE; Vol. 8834). Washington: SPIE. https://doi.org/10.1117/12.2023870
Prins, C.R. ; Schneider, C. ; IJzerman, W.L. ; Tukker, T.W. ; Thije Boonkkamp, ten, J.H.M. / Freeform TIR collimators for the removal of angular color variation in white LED spotlights. Proceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013). redacteur / R. Winston ; J. Gordon. Washington : SPIE, 2013. blz. 88340J/1-10 (Proceedings of SPIE).
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title = "Freeform TIR collimators for the removal of angular color variation in white LED spotlights",
abstract = "Angular color variation in white, phosphor-converted LEDs causes undesirable yellow rings in the beams of spotlights. We developed an inverse method to design TIR collimators that remove the angular color variation for point light sources and significantly reduce color variation for extended light sources, without the need for facets, holographic foils or scattering surfaces. We performed several numerical simulations to evaluate the performance of this point source method for extended light sources.",
author = "C.R. Prins and C. Schneider and W.L. IJzerman and T.W. Tukker and {Thije Boonkkamp, ten}, J.H.M.",
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Prins, CR, Schneider, C, IJzerman, WL, Tukker, TW & Thije Boonkkamp, ten, JHM 2013, Freeform TIR collimators for the removal of angular color variation in white LED spotlights. in R Winston & J Gordon (redactie), Proceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013). Proceedings of SPIE, vol. 8834, SPIE, Washington, blz. 88340J/1-10, conference; Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X; 2013-08-25; 2013-08-26, 25/08/13. https://doi.org/10.1117/12.2023870

Freeform TIR collimators for the removal of angular color variation in white LED spotlights. / Prins, C.R.; Schneider, C.; IJzerman, W.L.; Tukker, T.W.; Thije Boonkkamp, ten, J.H.M.

Proceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013). redactie / R. Winston; J. Gordon. Washington : SPIE, 2013. blz. 88340J/1-10 (Proceedings of SPIE; Vol. 8834).

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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AB - Angular color variation in white, phosphor-converted LEDs causes undesirable yellow rings in the beams of spotlights. We developed an inverse method to design TIR collimators that remove the angular color variation for point light sources and significantly reduce color variation for extended light sources, without the need for facets, holographic foils or scattering surfaces. We performed several numerical simulations to evaluate the performance of this point source method for extended light sources.

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Prins CR, Schneider C, IJzerman WL, Tukker TW, Thije Boonkkamp, ten JHM. Freeform TIR collimators for the removal of angular color variation in white LED spotlights. In Winston R, Gordon J, redacteurs, Proceedings of Nonimaging Optics : Efficient Design for Illumination and Solar Concentration X (San Diego CA, USA, August 25-26, 2013). Washington: SPIE. 2013. blz. 88340J/1-10. (Proceedings of SPIE). https://doi.org/10.1117/12.2023870