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This note points out additional funding information that was not added to Appl. Opt.56, 1962 (2017).APOPAI1559-128X10.1364/AO.56.001962.
In order to investigate the performance of suprathreshold color-difference tolerances with different visual scales and different perceptual correlates, a psychophysical experiment was carried out by the method of constant stimuli using CRT colors. Five hue circles at three lightness (L*=30, 50, and 70) and chroma (C*ab=10, 20, and 30) levels were selected… (More)
The methods were proposed to design the spectra of light sources with multi-channel LEDs based on a differential evolution (DE) algorithm. Specifically, to produce a desired illuminance level while matching a specific spectrum, a matching method combining the DE algorithm and photometry was verified by matching the Commission Internationale de l'Eclairage… (More)
The trade-off between the color fidelity index (R<sub>f</sub>) released recently by the Illuminating Engineering Society of North America (IES) and luminous efficacy of radiation (LER) was investigated by adjusting the peak wavelengths, spectral widths, and intensities of four-channel LEDs utilizing a multiobjective optimization algorithm based on… (More)