Smet Kevin, Ryckaert Wouter R, Pointer Michael R, Deconinck Geert, Hanselaer Peter
Light and Lighting Laboratory, Catholic University College Ghent, Belgium.
Opt Express. 2011 Mar 28;19(7):6903-12. doi: 10.1364/OE.19.006903.
The spectral power distributions of tri- and tetrachromatic clusters of Light-Emitting-Diodes, composed of simulated and commercially available LEDs, were optimized with a genetic algorithm to maximize the luminous efficacy of radiation and the colour quality as assessed by the memory colour quality metric developed by the authors. The trade-off of the colour quality as assessed by the memory colour metric and the luminous efficacy of radiation was investigated by calculating the Pareto optimal front using the NSGA-II genetic algorithm. Optimal peak wavelengths and spectral widths of the LEDs were derived, and over half of them were found to be close to Thornton's prime colours. The Pareto optimal fronts of real LED clusters were always found to be smaller than those of the simulated clusters. The effect of binning on designing a real LED cluster was investigated and was found to be quite large. Finally, a real LED cluster of commercially available AlGaInP, InGaN and phosphor white LEDs was optimized to obtain a higher score on memory colour quality scale than its corresponding CIE reference illuminant.
由模拟和市售发光二极管组成的三色和四色发光二极管集群的光谱功率分布，采用遗传算法进行了优化，以最大化辐射发光效率和作者开发的记忆颜色质量指标所评估的颜色质量。通过使用NSGA-II遗传算法计算帕累托最优前沿，研究了记忆颜色指标评估的颜色质量与辐射发光效率之间的权衡。得出了发光二极管的最佳峰值波长和光谱宽度，发现其中超过一半接近桑顿的原色。实际发光二极管集群的帕累托最优前沿总是小于模拟集群的前沿。研究了分档对设计实际发光二极管集群的影响，发现其影响相当大。最后，对市售的AlGaInP、InGaN和磷光白色发光二极管的实际发光二极管集群进行了优化，以在记忆颜色质量量表上获得比其相应的CIE参考光源更高的分数。
