Light source optimization: spectral design and simulation of four-band white-light sources

Andrew N. Chalmers; Snjezana Soltic

doi:10.1117/1.OE.51.4.044003

30 April 2012 Light source optimization: spectral design and simulation of four-band white-light sources

Andrew N. Chalmers, Snjezana Soltic

Author Affiliations +

Optical Engineering, Vol. 51, Issue 4, 044003 (April 2012). https://doi.org/10.1117/1.OE.51.4.044003

Abstract

The authors build on previous experience in the optimization of white light sources based on combinations of known narrow-band spectra. The authors extend these concepts by using synthetic (mathematically generated) four-band spectra to study the prospects for the spectral design of future optimal light sources. The optimization is based on achieving a trade-off of the color rendering properties against the luminous efficacy of the radiation, using the differential evolution (DE) algorithm. It is shown that this trade-off is controllable through the choice of the optimization parameters, specifically the choice of terms in the optimization fitness function. Depending on the choice of the shapes for the synthetic spectral bands, the results are comparable with those achieved in earlier work on the optimization of four-band light-emitting diode (LED) spectra. However, the range of color temperatures achieved in the present study is considerably wider than was previously found for optimum four-band LED mixtures.

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Andrew N. Chalmers and Snjezana Soltic "Light source optimization: spectral design and simulation of four-band white-light sources," Optical Engineering 51(4), 044003 (30 April 2012). https://doi.org/10.1117/1.OE.51.4.044003

Published: 30 April 2012

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