Patent ID: 7283240

Claim:
A color spectrophotometer system with an illumination system and a reflected illumination sensing system for providing an output of electronic color measurement information from the colors of color target areas on a target surface illuminated by said illumination system, where said target surface may be variably spaced from said color spectrophotometer system, further including; at least one color correction calibration system providing color correction calibration information corresponding to color measurement errors of said color spectrophotometer for known said variable spacings of said target surface from said color spectrophotometer, a target distance measurement system for measuring said variable spacing of said target surface from said color spectrophotometer to provide a target area spacing information signal, said target area spacing information signal being automatically combined with said color correction calibration information from said color correction calibration system for at least partial correction of said color measurement errors of said color spectrophotometer for said variable spacing of said target surface from said color spectrophotometer.