Patent ID: 7990537
Filing Date: 2011-08-02
Classification: G01J

Abstract:
1. A color-measuring method for measuring a color of light being emitted from a body within a case that is adapted into an irradiation condition being substantially equivalent to that of an environment where an observer is present, the method comprising: a reference-color measurement step of obtaining a reference-color measurement value L an objective-portion measurement step of obtaining an objective-portion measurement value L a color identification step of finding a color of said measurement-objective portion by a computation from a ratio of said objective-portion measurement value L providing a measurement-objective substance including a patched-color sheet in which a plurality of said measurement-objective portions comprising a plurality of different colors, and a plurality of said reference-color portions are arranged; wherein spectroscopic-radiation luminances of a plurality of said reference-color portions, or tristimulus values thereof, are measured in said reference-color measurement step, thereby taking an averaged value of them as said reference-color measurement value L wherein a spectroscopic-radiation luminance, or a tristimulus value, is measured for each of a plurality of said measurement-objective portions at said objective-portion measurement step, thereby obtaining a plurality of the objective-portion measurement values.