The average data obtained for the luminosity and chromaticity
in all solutions are presented in
The color hexagon: a chromaticity
diagram based on photoreceptor excitations as a generalized representation of color opponency.
Peak wavelength, FWHM, and CIE 1931 chromaticity
coordinates of the ten LEDs used as primaries, when operated alone.
Finally, the measured colour coordinates of the high-power LEDs are depicted in the CIE 1931 colour space chromaticity
i], we define the brightness distortion and chromaticity
The CIE L *, a *, and b * coordinates are characterized by three parameters: L * axis represents the lightness, and it varies from 100 (white) to 0 (black); a * and b * are the chromaticity
indices; +a * is the red direction; -a * is green; +b * is yellow; and--6 * is blue.
Saturation can be defined as the ratio of the brightness of the monocolor light stimulus to that of the white light stimulus, which can be attributed to the distance between the chromaticity
point of the color and the one of non-chromatic stimulus point in the chromaticity
diagram (JING & HU, 2006).
Providing color consistency and uniform angular chromaticity
, the product delivers luminous flux up to 122 lm at 350 mA in cool white, 6,500 K model and up to 100 lm at 350 mA in warm white, 3,500 K model.
Colours can be matched to the CIE 1931 xyY Chromaticity
have no specific numerical limits, and they denote the chromaticity
2001) for: object (standard colour table)--the shot photograph, shot photographs--edited photographs, object (standard colour table) edited photographs and CIE ab chromaticity
diagrams were made.
Their topics include the association nature of dyes chromaticity
, new magnetic nanomaterials of hyperbranched ferrocene-containing polyphenylenes prepared in liquid and supercritical carbon dioxide, the systems analysis of marketing research on utilizing phosphoric industry waste based on the CALS (continuous acquisition and life-cycle support) concept, and microkinetic aspects of the biocompatibility and biodegradation of polymers.