Abstract: A light irradiation unit configured to irradiate a measurement part with a light beam that has a wavelength absorbed by glucose and a detection unit configured to detect a photoacoustic signal generated from the measurement part irradiated with the light beam emitted from the light irradiation unit are included. The light irradiation unit irradiates the measurement part by scanning the light beam 2-dimensionally. The measurement part is irradiated with the light beam through raster scanning. For example, the light beam has a beam diameter of about 100 ?m and is scanned at a scanning speed of about 100 ?m/10 ms.

Abstract: A component concentration measurement device includes a light application unit (101) that applies pulsed beam light (121) of a wavelength that is absorbed by glucose to a site of measurement (151), and a detection unit (102) that detects a photoacoustic signal which is generated at the site of measurement (151) where the beam light (121) emitted from the light application unit (101) has been applied. The component concentration measurement device also includes a moisture measurement unit (103) that measures an amount of moisture in skin at the site of measurement (151), and a correction unit (104) that corrects an acoustic signal detected by the detection unit (102) with the amount of moisture measured by the moisture measurement unit (103).

Abstract: A component concentration measurement device includes a light application unit that applies beam light of a wavelength that is absorbed by glucose to a site of measurement, and a detection unit that detects a photoacoustic signal which is generated at the site of measurement where the beam light emitted from the light application unit has been applied. The component concentration measurement device also includes a thickness measurement unit that measures a thickness of the site of measurement, and a correction unit that corrects an acoustic signal detected by the detection unit with the thickness measured by the thickness measurement unit.

Abstract: A light irradiation unit configured to irradiate a measurement part with a light beam that has a wavelength absorbed by glucose and a detection unit configured to detect a photoacoustic signal generated from the measurement part irradiated with the light beam emitted from the light irradiation unit are included. The light irradiation unit irradiates the measurement part by scanning the light beam 2-dimensionally. The measurement part is irradiated with the light beam through raster scanning. For example, the light beam has a beam diameter of about 100 ?m and is scanned at a scanning speed of about 100 ?m/10 ms.