CHROMATICITY METER AND CHROMATICITY MEASUREMENT METHOD

To provide a chromaticity meter that is able to measure the chromaticity of a to-be-measured object more accurately.SOLUTION: A chromaticity meter 1 according to the present disclosure, which is a chromaticity meter 1 for measuring a chromaticity of a to-be-measured object A, includes: a first light-source unit 11 that emits first emission light having a first spectrum S1; a second light-source unit 12 that emits second emission light having a second spectrum S1 different from the first spectrum S2; an integrating sphere 61 on which emission light including the first emission light and the second emission light is made incident; a light receiving unit 20 that detects to-be-measured light generated by emitting the emission light, emitted from the integrating sphere 61, to the to-be-measured object A; and a control unit 50 that calculates an optical spectrum of the to-be-measured light, based on a detection signal of the to-be-measured light; wherein a superposed spectrum S of the first spectrum S1 and the second spectrum S2 corresponds to a reference spectrum S0 of a standard light source serving as a reference for calculating the chromaticity.SELECTED DRAWING: Figure 2 【課題】被測定物の色度をより正確に測定することが可能な色度計を提供する。【解決手段】本開示に係る色度計１は、被測定物Ａの色度を測定する色度計１であって、第１スペクトルＳ１を有する第１照射光を照射する第１光源部１１と、第１スペクトルＳ１と異なる第２スペクトルＳ２を有する第２照射光を照射する第２光源部１２と、第１照射光及び第２照射光を含む照射光が入射する積分球６１と、積分球６１から出射した照射光が被測定物Ａに照射されることで生じる被測定光を検出する受光部２０と、被測定光の検出信号に基づいて被測定光の分光スペクトルを算出する制御部５０と、を備え、第１スペクトルＳ１と第２スペクトルＳ２との重ね合わせスペクトルＳは、色度を算出する基準となる標準光源の基準スペクトルＳ０と対応する。【選択図】図２