| 摘要 |
PROBLEM TO BE SOLVED: To enable measurement of colorimetric values corresponding to each of a plurality of color-matching functions using one direct-reading tristimulus colorimeter having a simple configuration.SOLUTION: A direct-reading tristimulus colorimeter includes; a group of colorimetric optical systems which, when a correction color filter 1040 is placed at a non-correction position, receives a light beam that is incident without going through the correction color filter 1040 and outputs a group of first signals having spectral responsivities approximated to a first color-matching function and intensities corresponding to a spectral intensity of light under measurement and, when the correction color filter 1040 is placed at a correction position, receives a light beam through the correction color filter 1040 and outputs a group of second signals having spectral responsivities approximated to a second color-matching function and intensities corresponding to a spectral intensity of the light under measurement; and a derivation mechanism which derives colorimetric values corresponding to selection of the first color-matching function from the first group of signals, and derives colorimetric values corresponding to selection of the second color matching function from the second group of signals.SELECTED DRAWING: Figure 6 |
