| 摘要 |
A method for evaluating color unevenness of a surface light-emitting body, said method being provided with: a step in which the light-emitting region of a surface light-emitting body is divided into a plurality of blocks; a step in which tristimulus values are measured for each of the blocks; a step in which lightness indices and chromaticness indices are calculated from the tristimulus values; a step in which the color difference DeltaEabij between two arbitrarily selected blocks is calculated from the chromaticness indices using formula (1), and the distance dij is calculated using formula (2); and a step in which the color unevenness index Cd of the surface light-emitting body is calculated from the color difference DeltaEabij and the distance dij using formula (3). |
