excitation purity

excitation purity

[‚ek‚sī′tā·shən ‚pyu̇r·əd·ē]
(analytical chemistry)
The ratio of the departure of the chromaticity of a specified color to that of the reference source, measured on a chromaticity diagram; used as a guide of the wavelength of spectrum color needed to be mixed with a reference color to give the specified color.
References in periodicals archive ?
It can measure the color temperature, illuminance, chromaticity, excitation purity, and dominant wavelength of various light sources.
Simultaneous measurements - has the ability to determine illuminance, dominant wavelength, color temperature, chromaticity, and excitation purity of a light source