| 摘要 |
PROBLEM TO BE SOLVED: To provide a colorimetric apparatus for dentistry capable of acquiring reflected light having high luminous intensity from an object to be measured and thereby performing accurate colorimetry by irradiating light having high luminous intensity to a narrow range of the object to be measured. SOLUTION: The colorimetric apparatus for dentistry includes: a plurality of light sources for irradiating light to an object to be measured; a light-receiving part for receiving reflected light of light irradiated toward the object to be measured from each light source; and a cap body covering each light source and the light-receiving part. The luminous intensity of light irradiated within the range of a prescribed emission angle is maintained at 1,800 mcd or greater in the light sources in use. The light sources each are arranged at equal intervals along the inner surface of a conical hollow part of the cap body having the hollow part, and the light-receiving part is arranged on the axis line of the hollow part arranged at the same distance from each light source to make light irradiated from each light source at an emission angle of 0°intersect with one another on the axis line and make light irradiated in parallel with the inner surface of the hollow part within the range of the prescribed emission angle from each light source on the axis line. COPYRIGHT: (C)2010,JPO&INPIT
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