An inverse method for color uniformity in white LED spotlights

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

Research output: Book/ReportReportAcademic

126 Downloads (Pure)


Color over Angle (CoA) variation in the light output of white phosphor-converted LEDs is a common problem in LED lighting technology. In this article we propose an inverse method to design an optical element that eliminates the color variation for a point light source. The method in this article is an improved version of an earlier method [1], and provides more design freedom. We derive a mathematical model for color mixing in a collimator and present a numerical algorithm to solve it. We verify the results using Monte-Carlo ray tracing.
Original languageEnglish
Place of PublicationEindhoven
PublisherTechnische Universiteit Eindhoven
Number of pages18
Publication statusPublished - 2013

Publication series

ISSN (Print)0926-4507


Dive into the research topics of 'An inverse method for color uniformity in white LED spotlights'. Together they form a unique fingerprint.

Cite this