| 摘要 |
PURPOSE:To minimize the measurement error of the absolute value occurring in the error of spectral sensitivity and the instrument error of the measured value by the variance in the spectral sensitivity between instruments by determining the optimum calibration constant among the calibration constants according to the measured chromaticity points of a sample. CONSTITUTION:This photoelectric colorimeter has a photoelectric part 100 and a data processing part 200. The calibration constants of the plural standard calibration samples calculated by a means for calculating the calibration constant are stored in a RAM7 when the calibration key in a keyboard 12 is pushed. On the other hand, a means for selecting the calibration constant selects the optimum calibration constant in accordance with, for example, the distance between the chromaticity points, etc. from the RAM7 according to the chromaticity points of the sample detected by the photoelectric part 100. The correcting means corrects the measured value expressing the chromaticity of the sample with the optimum calibration constant selected by the means for selecting the calibration constant.
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