Color perception under illumination by quadrichromatic solid-state lamp

Rytis Stanikunas; Henrikas Vaitkevicius; Algimantas Svegzda; Vilius Viliunas; Zenius Bliznikas; Kestutis Breive; Rimantas Vaicekauskas; Algirdas Novickovas; Genadij Kurilcik; Arturas Zukauskas; Remis Gaska; Michael S. Shur

doi:10.1117/12.565128

20 October 2004 Color perception under illumination by quadrichromatic solid-state lamp

Rytis Stanikunas, Henrikas Vaitkevicius, Algimantas Svegzda, Vilius Viliunas, Zenius Bliznikas, Kestutis Breive, Rimantas Vaicekauskas, Algirdas Novickovas, Genadij Kurilcik, Arturas Zukauskas, Remis Gaska, Michael S. Shur

Author Affiliations +

Proceedings Volume 5530, Fourth International Conference on Solid State Lighting; (2004) https://doi.org/10.1117/12.565128
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Lighting based on sources of light composed of colored light-emitting diodes (LEDs) offers versatile control of color and a possibility of trade-off between efficiency and color rendering. However, psychophysical issues related to such polychromatic solid-state sources have to be addressed. In this work, studies of the perception of standard colors under illumination with a quadrichromatic red-amber-green-blue (RAGB) solid-state source were carried out. An RAGB lamp containing primary LEDs with the emission peaks at 638 nm, 594 nm, 523 nm, and 441 nm and optimized for the highest value of the general color rendering index (86 points) was investigated and compared to a tungsten lamp. 40 standard Munsell samples of value 6, chroma /6, and hue incremented by 2.5 were used in the investigation. Changes in the saturation and hue of the Munsell samples illuminated by the RAGB lamp versus tungsten lamp (both with the correlated temperature of 2600 K) were obtained by colorimetric calculation comparisons and by psychophysical experiments on subjective matching of the samples. Subjective differences in hue and subjective color discrimination differences under the tungsten and RAGB lamps were found in the wavelength range of 440-500 nm and 560-580 nm. We attribute these differences to non-optimal peak wavelengths of the primary LEDs and to the narrow-band components of the RAGB spectrum.

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Rytis Stanikunas, Henrikas Vaitkevicius, Algimantas Svegzda, Vilius Viliunas, Zenius Bliznikas, Kestutis Breive, Rimantas Vaicekauskas, Algirdas Novickovas, Genadij Kurilcik, Arturas Zukauskas, Remis Gaska, and Michael S. Shur "Color perception under illumination by quadrichromatic solid-state lamp", Proc. SPIE 5530, Fourth International Conference on Solid State Lighting, (20 October 2004); https://doi.org/10.1117/12.565128

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