Patent ID: 6661915
Filing Date: 2003-12-09
Classification: G01N

Abstract:
A method for measuring color characteristics of a sample, the method comprising:setting a colorimeter at standard tristimulus values of X, Y, Z based on a white standard plate under a specific level of illumination; performing an initial measurement of tristimulus values of X, Y, Z of the sample under an initial illumination level, the initial illumination level comprising one of the specific level of illumination of the sample and another level of illumination of the sample; varying the level of illumination of the sample relative to the initial illumination level; performing at least one further measurement of tristimulus values of X, Y, Z of the sample during said varying of the level of illumination of the sample; reporting the initial illumination level, and reporting the level of illumination used in said performing of at least one further measurement of tristimulus values of X, Y, Z of the sample; and plotting color measuring results on a chromaticity diagram based on the at least one further measurement of the tristimulus values of X, Y, Z of the sample.