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