Abstract: An optical unit (100) includes a light-emitting portion (10) that irradiates an analysis target with light, light-receiving portions (20) that receive light that has been reflected or diffused by the analysis target, a mounting substrate (30) on which these portions are mounted, and a plate-shaped member (40) having optical transparency. The plate-shaped member (40) is arranged so as to cover the light-emitting portion (10) and the light-receiving portions (20) that are mounted on the mounting substrate (30). Positions of the light-emitting portion (10), the light-receiving portions (20), and the plate-shaped member (40) are set such that, in the case where the analysis target is in contact with the plate-shaped member (40), light emitted from the light-emitting portion (10) is incident on two or more of the light-receiving portions (20) after being reflected or diffused by the analysis target.

Abstract: A blood sugar level prediction device (10) is for predicting the blood sugar level of a user (30). The blood sugar level prediction device (10) is provided with a pattern selection unit (11) that selects one pattern from a plurality of preset blood sugar level time series variation patterns, based on the blood sugar level of the user (30) at the time of fasting, and a correction processing unit (12) that corrects the selected pattern using a plurality of measured values obtained by executing optical measurement of blood sugar levels over a number of measurement dates, targeting the user (30).

Abstract: An optical unit (100) includes a light-emitting portion (10) that irradiates an analysis target with light, light-receiving portions (20) that receive light that has been reflected or diffused by the analysis target, a mounting substrate (30) on which these portions are mounted, and a plate-shaped member (40) having optical transparency. The plate-shaped member (40) is arranged so as to cover the light-emitting portion (10) and the light-receiving portions (20) that are mounted on the mounting substrate (30). Positions of the light-emitting portion (10), the light-receiving portions (20), and the plate-shaped member (40) are set such that, in the case where the analysis target is in contact with the plate-shaped member (40), light emitted from the light-emitting portion (10) is incident on two or more of the light-receiving portions (20) after being reflected or diffused by the analysis target.

Abstract: An analysis device for analyzing components contained in an object includes a light emitting unit that irradiates the object with light, a transmissive spectral filter, a light detector including a plurality of light receiving elements, an analysis unit. The spectral filter includes a substrate having light transmissivity and being disposed on a light path of the light after being reflected by the object or the light after passing through the object, a plurality of raised portions formed with a metal material on one surface of the substrate, and a metal oxide film including a metal oxide material having a higher refractive index than the metal material, so as to cover the plurality of raised portions and the one surface of the substrate.

Abstract: A blood sugar level prediction device (10) is for predicting the blood sugar level of a user (30). The blood sugar level prediction device (10) is provided with a pattern selection unit (11) that selects one pattern from a plurality of preset blood sugar level time series variation patterns, based on the blood sugar level of the user (30) at the time of fasting, and a correction processing unit (12) that corrects the selected pattern using a plurality of measured values obtained by executing optical measurement of blood sugar levels over a number of measurement dates, targeting the user (30).

Abstract: An optical unit has a filter member that disperses transmitted light and a photodetector that has light receiving elements. The filter member has a light transmissive substrate, protrusions including a first metallic material and formed on one surface of the substrate, and a metal film including a second metallic material having a refractive index higher than that of the first metallic material and formed so as to cover the protrusions as well as the one surface of the substrate. The metal film located between adjacent protrusions can be a diffraction grating and the protrusions can be waveguides. At least one of the grating cycle of the diffraction grating, the height of the protrusions, and the thickness of the metal film is set to a value different for each portion such that a wavelength of light transmitted through the filter member changes for each portion.

Abstract: An analysis device capable of handling analysis of a wide variety of components while suppressing an increase in device size is provided. An analysis device 1 is provided with a light emitting unit 10, a transmissive spectral filter 22, a light detector 23, and an analysis unit 31. The spectral filter 22 is provided with a light transmissive substrate, a plurality of raised portions formed with a first metal material on one surface of the substrate, and a metal film formed using a second metal material having a higher refractive index than the first metal material, so as to cover the raised portions and the one surface. The raised portions are disposed such that the metal film existing between the raised portions serves as a diffraction grating and the raised portions serve as a waveguide.

Abstract: An optical unit is provided with a filter member (1) that disperses transmitted light and a photodetector (2) that has a plurality of light receiving elements. The filter member (1) is provided with a light transmissive substrate, a plurality of protrusions comprising a first metallic material and formed on one surface of the substrate, and a metal film comprising a second metallic material having a refractive index higher than that of the first metallic material and formed so as to cover the plurality of protrusions as well as the one surface of the substrate. The plurality of protrusions is disposed such that the metal film located between adjacent protrusions can be a diffraction grating and the protrusions can be waveguides. At least one of the grating cycle of the diffraction grating, the height of the protrusions, or the thickness of the metal film is set to a value different each portion such that a wavelength of light transmitted through the filter member changes each portion.