Otsuka Electronics Co., Ltd.

Hisashi Shiraiwa

Kazuaki Ohkubo

Tsutomu Mizuguchi

Hiroyuki Sano

Haruka Otsuka

Takeshi Kamada

Kenji Nakamura

A confocal optical system-based measurement apparatus includes: a light source; a light projecting optical fiber group; a light receiving optical fiber group; a spectroscope; and a confocal optical system configured to condense each of a plurality of beams from a plurality of light projecting optical fibers to irradiate a sample therewith, and cause a plurality of beams from a plurality of condensing points on the sample to form images on the plurality of light receiving optical fibers, respectively, wherein the light projecting optical fiber group includes the plurality of light projecting optical fibers configured to receive light from the light source, the light receiving optical fiber group includes the plurality of light receiving optical fibers configured to guide received light to the spectroscope, the shape of an end face of the light projecting optical fiber group and the shape of an end face of the light receiving optical fiber group are in a mirror image relationship, and in the light projecting optical fiber group and the light receiving optical fiber group, the shape of an end face of each light projecting optical fiber and the shape of an end face of a light receiving optical fiber corresponding thereto are in a mirror image relationship.

Confocal optical system-based measurement apparatus and method for manufacturing confocal optical system-based measurement apparatus

A reference light source device for calibration of a spectral radiance meter includes an integrating sphere having a radiance reference plane, which is an opening; and a plurality of first optical ports, which are formed apart from each other in an outer wall of the integrating sphere to allow light rays with equivalent wavelength characteristics to enter an interior of the integrating sphere.

Reference light source device used for calibration of spectral luminance meter and calibration method using same

A microspectroscope includes: a light source; a plurality of light projecting optical fibers that receive light from the light source; a spectroscope; a plurality of light receiving optical fibers for guiding received light to the spectroscope; and a confocal optical system for causing each of a plurality of beams from the plurality of light projecting optical fibers to be condensed and irradiated onto a sample, and forming images of a plurality of beams from a plurality of condensing points on the sample, respectively on the plurality of light receiving optical fibers.

Microspectroscope including optical fibers and spectroscope

A spectrophotometer includes a photodetection unit configured to convert received light into an electric signal to output the electric signal; a circuit unit including a plurality of gain amplifiers and a plurality of AD converters configured to amplify an output signal from the photodetection unit by a plurality of gains using the plurality of gain amplifiers and configured to convert the amplified output signals into digital signals using the plurality of AD converters to output the digital signals as a plurality of pieces of light amount data; a saturation determination unit configured to determine whether or not each of the plurality of pieces of light amount data from the circuit unit has been saturated; and a measurement result calculation unit configured to calculate, in accordance with a result of the determination by the saturation determination unit, a measurement result of the received light using a part or all of the plurality of pieces of light amount data.

Spectrophotometer and spectrophotometric measurement method

An optical measurement apparatus includes: a hollow cylindrical member having one plane with a first opening and the other plane with a second opening; a rotation mechanism for rotating the cylindrical member about a first axis; a support unit for arranging a light source at a measurement position which is on the first axis and from which the emitted light enters the cylindrical member through the first opening; a first reflection unit arranged inside the cylindrical member for reflecting the light emitted from the light source and entering through the first opening; a second reflection unit for reflecting the light inside the cylindrical member and propagating the light through the second opening along the first axis to the outside of the cylindrical member; and at least one third reflection unit for causing the light reflected by the first reflection unit to be incident on the second reflection unit.

Optical measurement apparatus

A light source support apparatus includes: a base member; a first support member supporting the base member rotatably about a first axis; first and second arm members connected respectively to opposite ends of the base member and extending in a direction parallel to the first axis; and a pair of second support members disposed at respective positions, which are opposite to each other, of the first and second arm members for supporting a sample light source. The pair of second support members is configured to be able to rotate the supported sample light source about a second axis orthogonal to the first axis. At least one of the first and second arm members is configured to be attachable to and detachable from the base member.

Light source support apparatus and optical radiation characteristic measurement apparatus using the same

An optical characteristic measuring apparatus includes a hemispheric portion having a reflective surface on its inner wall, and a plane portion arranged to close an opening of the hemispheric portion and having a reflective surface on an inner-wall side of the hemispheric portion. The plane portion includes a first window occupying a range including a substantial center of curvature of the hemispheric portion for attaching a light source to the first window. At least one of the hemispheric portion and the plane portion includes a plurality of second windows arranged in accordance with a predetermined rule for extracting light from inside the hemispheric portion.

Optical characteristic measuring apparatus

Disclosed is an aperture variable inspection optical system including a variable aperture unithaving a polygonal light transparent section and light collecting systemsfor forming an irradiation spot U of light passing through the variable aperture unitat the position of a sample S. The variable aperture unitis capable of changing the shape/size of the polygon. The size of the irradiation spot U can be changed without rearranging the aperture unit.

Growing community of inventors

Koka, Japan

Hisashi Shiraiwa