| abstract |
Blood glucose information is noninvasively measured using photoacoustic spectroscopy. A blood information measuring apparatus 10 can obtain a tomographic image of a biological tissue by optical interference tomography, and specifies a position of a blood vessel from the obtained tomographic image. The rod lens 28 is movable in the optical axis direction, and can move the focal position of the measurement light. After the position and depth of the blood vessel are specified, the measurement light is focused on the inside of the blood vessel, and the subject is irradiated with the measurement light. A pressure wave emitted from the inside of the subject is detected as an ultrasonic wave, and the amount of glycohemoglobin can be measured by the intensity of the ultrasonic wave. [Selection] Figure 1 |