Portable Colorimeter Measures Illuminance, Too.A new hand-held, multi-functional colorimeter A device that measures the red, green and blue values of color. See colorimetry and color calibration. Contrast with densitometer. can be used across a broad spectrum of lighting and color applications. The CL-200 Light Source Chroma Short for "chrominance." The attributes of a color, which include its hue (frequency) and saturation (amount of black). See hue and saturation. Measurement System from Minolta Corp.'s Instruments Div., Ramsey, N.J., can measure tristimulus colorimetrics, chromaticity, color difference Refers to the method of encoding color information in video/TV signals. The color difference signal designations are B-Y and R-Y, Cb and Cr, Pb and Pr, I and Q, and U and V. See YUV and YUV/RGB conversion formulas. , and both color temperature and illuminance illuminance: see photometry. Illuminance A term expressing the density of luminous flux incident on a surface. This word has been proposed by the Colorimetry Committee of the Optical Society of America to replace the term illumination. of light sources. Its modular design uses lightweight interchange able components. Priced at $2595, the basic system consists of the battery-operated meter body and a standard, detachable L-200 Receptor Head suitable for a wide range of lighting applications. An RS232 interface is standard. |
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