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【課題】 測定対象物の狭い範囲に対して高い光度の光を照射することによって測定対象物から高い光度の反射光を得ることができ、これによって正確な測色を行うことができる歯科用測色器を提供する。【解決手段】 測定対象物に対して光を照射する複数の光源と、各光源から測定対象物に向けて照射された光の反射光を受光する受光部と、各光源及び受光部に被せられるキャップ体とを備えた歯科用測色器において、光源として所定の放射角度の範囲で照射された光の光度が1800以上に維持されるものを使用し、円錐状の中空部を有するキャップ体の中空部内面に沿って各光源を等間隔に配置し、各光源から等距離に位置する中空部の軸線上に受光部を配置し、各光源から放射角度0°で照射された光を前記軸線上にて交差すると共に、各光源から所定の放射角度の範囲で中空部内面と平行に照射された光を前記軸線上にて交差する。【選択図】 図1
