colorimeter
An instrument for measuring or specifying color by
means of comparison with synthesized colors. i.e.,
by reference either to other colors or to complex
stimuli, not in general identical with the actual
color stimulus, and giving results not independent
of abnormalities in the color vision of the
observer. The typical colorimeter has a built-in
standard light source, three colored filters,
photoelectric cells or phototubes, a standard
reflecting surface, and, in modern instruments,
photoelectric cells and electronic circuits to
replace the human eye as the receptor. The results
of a colorimeter examination are expressed as
"chromaticity coordinates. " (197 , 233 )
![[CoOL]](/icons/sm_cool.gif){kind=icon}