Journal of Engineering Mathematics

, Volume 81, Issue 1, pp 177–190

An inverse method for the design of TIR collimators to achieve a uniform color light beam

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

DOI: 10.1007/s10665-012-9584-7

Cite this article as:
Prins, C.R., ten Thije Boonkkamp, J.H.M., Tukker, T.W. et al. J Eng Math (2013) 81: 177. doi:10.1007/s10665-012-9584-7

Abstract

Color-over-angle (CoA) variation in the light output of white LEDs is a common and unsolved problem. In this article we introduce a new method to reduce CoA variation using a special collimator. The method is based on analytical inverse design methods. We present a numerical algorithm to solve the differential equations arising from this method and verify the results using Monte Carlo raytracing.

Keywords

Color uniformity Functional design method Inverse methods Optics TIR collimator 

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • C. R. Prins
    • 1
    • 2
  • J. H. M. ten Thije Boonkkamp
    • 2
  • T. W. Tukker
    • 3
  • W. L. IJzerman
    • 4
  1. 1.Department of Applied PhysicsEindhoven University of TechnologyEindhovenThe Netherlands
  2. 2.Department of Mathematics and Computer ScienceEindhoven University of TechnologyEindhovenThe Netherlands
  3. 3.Philips ResearchKoninklijke Philips Electronics N.V.EindhovenThe Netherlands
  4. 4.Philips LightingKoninklijke Philips Electronics N.V.EindhovenThe Netherlands

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