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Spectral power distributions of the optimized polychromatic sources of white light metameric to daylight (standard illuminant ) for two (a), three (b), four (c), and five (d) primary LEDs. Solid lines, spectra with the maximized number of rendered colors; dashed lines, spectra with the maximized general color rendering index.
Chromaticities of the 1269 Munsell color samples in the CIE 1931 plane under illumination by dichromatic [(a) and (b)], trichromatic [(c) and (d)], tetrachromatic [(e) and (f)], and pentachromatic [(g) and (h)] LED-based sources of white light metameric to daylight (standard illuminant ). Left, sources with the maximized general color rendering index (standard approach); right, sources with the maximized number of rendered colors (proposed approach). Filled points, test color samples with colors perceived as distorted; open points, samples with rendered colors. The background colors roughly relate to the actual chromaticities.
Peak wavelengths, the general color rendering index , and the number of rendered colors for polychromatic LED-based lamps metameric to daylight.
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