BLOOD COMPONENT MEASURING DEVICE

摘要

A blood component measuring device (10A) comprises: an illumination light source (12) capable of emitting at least near infrared light; a light receiving unit (14) having a sensitivity sufficient to sense light emitted from the illumination light source (12); a holding mechanism (16) for holding and fixing a biological body part (11); and a calculation means (20) for calculating the concentration of a blood component of the biological body part (11). The calculation means (20) calculates the concentration of a blood component of the biological body part (11) at a position having the minimal ratio of S1/S2 where S1 denotes the intensity of transmitted light having a first wavelength absorbed with relative ease by hemoglobin, and S2 denotes the intensity of transmitted light having a second wavelength absorbed with relative difficulty by hemoglobin.