Method and apparatus for measuring biological property values using near infrared spectroscopy

摘要

PROBLEM TO BE SOLVED: To accurately measure change of an organism characteristic value according to time course, while reducing a load applied to a measurement object person.SOLUTION: The invention measures change of an organism characteristic value according to time course. The invention is configured to acquire a measured value of the organism characteristic value, radiate a near infrared light to an organism, then receives a diffuse reflectance or a transmission light from the organism, determine absorbance for plural wavelength in a set wavelength range of the near infrared light, specify a wavelength in which correlation of the absorbance with the measured value is high, derive a formula for calculating the measured value based on the absorbance of the specified wavelength in plural lapse times, and, in other lapse time, radiate the near infrared light to the organism, receives the diffuse reflectance from the organism or the transmission light, then determine absorbance of the specified wavelength, and calculate the organism characteristic value from the formula.SELECTED DRAWING: Figure 2