Photonics Dictionary

The values of the three standard or matching stimuli necessary to provide a match with the light under trial, in a specified trichromatic system.

Proportions of standard primaries (tristimulus values) required for a color match; ratios of each tristimulus value of a color to their sum. In the CIE colorimetric system, designated X, Y and Z.

A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides objective and standardized color information, typically expressed in terms...

A system having a photoelectric detector for the measurement of three quantities related by linear combination to tristimulus values of a sample.

Computation of tristimulus values by integrating or summing, over the visible wavelength region, the product of the relative spectral power of a CIE standard source, the reflectance of the object...