PROBLEM TO BE SOLVED: To allow simple and excellent blood sugar level measurement without requiring near-infrared spectrum measurement in a wide wavelength range.SOLUTION: In measurement of glucose concentration in a tissue of an organism with the use of a signal obtained by receiving light that has been diffused and reflected from or transmitted through the organism tissue after irradiation of near infrared light to the organism. The near-infrared light to be used includes near-infrared light of a first wavelength selected from a wavelength range of 1600±40 nm corresponding to an absorption peak wavelength of a glucose component and near-infrared light of a second wavelength selected from a wavelength range of 1400±20 nm for use in correction of a scattering coefficient variation in the organism tissue.COPYRIGHT: (C)2014,JPO&INPIT【課題】広い波長範囲の近赤外スペクトル測定を必要とせずに簡便に且つ良好な血糖値測定を行う。【解決手段】生体に近赤外光を照射して生体組織からの拡散反射光あるいは透過光を受光して得られた信号から生体組織中のグルコース濃度を測定するにあたり、グルコース成分の吸収ピーク波長である1600±40nmの波長範囲から選択した第一の波長の近赤外光と、生体組織中の散乱係数変化の補正用として1400nm±20nmの波長範囲から選択した第二の波長の2波長の近赤外光とを用いる【選択図】図1
