Patents by Inventor Kazunori Sakurai
Kazunori Sakurai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240111052Abstract: An information processing device (30) includes a signal acquisition unit (31), a passive depth estimation unit (34), and a fusion unit (35). The signal acquisition unit (31) extracts, from light reception data, active information indicating a flight time of reference light (PL) and passive information (PI) indicating two-dimensional image information of a subject (SU) obtained from ambient light (EL). The passive depth estimation unit (34) generates passive depth information (PDI) based on the passive information (PI). The fusion unit (35) fuses the passive depth information (PDI) with active depth information (ADI) generated based on the active information to generate depth information (DI) of the subject (SU).Type: ApplicationFiled: January 25, 2022Publication date: April 4, 2024Applicant: Sony Group CorporationInventors: Yuta SAKURAI, Toshiyuki SASAKI, Kazunori KAMIO, Satoshi KAWATA
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Patent number: 10485464Abstract: A biological body inspection apparatus includes a measurement module that acquires an amount of light having a wavelength under measurement contained in light incident on the measurement module and an enclosure that accommodates the measurement module and has a window that transmits light traveling toward the measurement module. An adhesive member is provided on a surface of the enclosure at least in an area thereof that surrounds the window. The adhesive member has a light blocking section that is located in an area outside the window and surrounds the window in a plan view in the direction along the optical axis of the light traveling toward the measurement module and blocks light that belongs to a measurement wavelength region within which at least the wavelength under measurement is present.Type: GrantFiled: October 29, 2015Date of Patent: November 26, 2019Assignee: Seiko Epson CorporationInventor: Kazunori Sakurai
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Patent number: 9970817Abstract: A spectroscopic analysis apparatus includes a spectrum measurement unit that measures an optical spectrum of a measurement target, a storage unit that stores reference data in which an intrinsic wavelength with respect to a known component is recorded, a feature specification section that specifies a feature point corresponding to the intrinsic wavelength in the optical spectrum which is measured by using the reference data, and a wavelength correction section that corrects a wavelength of the feature point in the optical spectrum as the intrinsic wavelength.Type: GrantFiled: September 22, 2015Date of Patent: May 15, 2018Assignee: Seiko Epson CorporationInventors: Kazunori Sakurai, Hirokazu Kasahara
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Patent number: 9797774Abstract: A spectrometry system includes an imaging apparatus that includes an imaging element which captures an image, and a spectroscopic module that includes a wavelength variable interference filter and an attachment unit which holds the wavelength variable interference filter, is provided to be attachable to and detachable from the imaging apparatus, and can dispose the wavelength variable interference filter on an optical path of incident light to the imaging element during attachment to the imaging apparatus.Type: GrantFiled: December 23, 2014Date of Patent: October 24, 2017Assignee: Seiko Epson CorporationInventors: Akira Sano, Takashi Nagate, Kazunori Sakurai, Nozomu Hirokubo
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Patent number: 9430987Abstract: An image display device includes a display section adapted to display an image, a photometric section including a variable wavelength interference filter adapted to transmit light with a predetermined wavelength from incident light and a photosensor adapted to detect light obtained by dispersion, and disposed so as to be opposed to the display section, and a control section adapted to control the display section and the photometric section, and the control section obtains a spectrum of the incident light based on light intensity of the light detected by the photosensor, and then performs a color correction of the display section based on the spectrum.Type: GrantFiled: January 7, 2014Date of Patent: August 30, 2016Assignee: Seiko Epson CorporationInventors: Tsugio Gomi, Kazunori Sakurai
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Publication number: 20160120450Abstract: A biological body inspection apparatus includes a measurement module that acquires an amount of light having a wavelength under measurement contained in light incident on the measurement module and an enclosure that accommodates the measurement module and has a window that transmits light traveling toward the measurement module. An adhesive member is provided on a surface of the enclosure at least in an area thereof that surrounds the window. The adhesive member has a light blocking section that is located in an area outside the window and surrounds the window in a plan view in the direction along the optical axis of the light traveling toward the measurement module and blocks light that belongs to a measurement wavelength region within which at least the wavelength under measurement is present.Type: ApplicationFiled: October 29, 2015Publication date: May 5, 2016Inventor: Kazunori SAKURAI
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Publication number: 20160091369Abstract: A spectroscopic analysis apparatus includes a spectrum measurement unit that measures an optical spectrum of a measurement target, a storage unit that stores reference data in which an intrinsic wavelength with respect to a known component is recorded, a feature specification section that specifies a feature point corresponding to the intrinsic wavelength in the optical spectrum which is measured by using the reference data, and a wavelength correction section that corrects a wavelength of the feature point in the optical spectrum as the intrinsic wavelength.Type: ApplicationFiled: September 22, 2015Publication date: March 31, 2016Inventors: Kazunori SAKURAI, Hirokazu KASAHARA
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Publication number: 20150185081Abstract: A spectrometry system includes an imaging apparatus that includes an imaging element which captures an image, and a spectroscopic module that includes a wavelength variable interference filter and an attachment unit which holds the wavelength variable interference filter, is provided to be attachable to and detachable from the imaging apparatus, and can dispose the wavelength variable interference filter on an optical path of incident light to the imaging element during attachment to the imaging apparatus.Type: ApplicationFiled: December 23, 2014Publication date: July 2, 2015Inventors: Akira SANO, Takashi NAGATE, Kazunori SAKURAI, Nozomu HIROKUBO
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Publication number: 20150153564Abstract: A wavelength variable interference filter includes a plurality of filter units each of which includes a pair of reflecting films facing each other and a gap changing unit changing an interval between the pair of reflecting films. The plurality of filter units are two-dimensionally disposed with respect to an arrangement surface parallel to a reflecting surface of the reflecting film, and reflecting films of other filter units disposed at locations different from those on a first virtual straight line, intersecting a predetermined direction (first direction) along the arrangement surface, are disposed so as to overlap a portion of the reflecting films on the first virtual straight line without gaps therebetween between two reflecting films adjacent with a predetermined interval therebetween along the first virtual straight line, when seen from the predetermined direction (first direction).Type: ApplicationFiled: December 1, 2014Publication date: June 4, 2015Inventors: Akira SANO, Tomohiro MAKIGAKI, Kazunori SAKURAI
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Publication number: 20150138538Abstract: A component analyzing apparatus includes a base unit having a mounting part on which a measuring object is mounted and a mass measurement part that measures a mass of the measuring object, a spectroscopic camera that acquires a spectral image of the measuring object, a support unit provided on the base unit and supporting the spectroscopic camera in a location such that an imaging direction in the spectroscopic camera is a direction toward the mounting part and a distance between the mounting part and the spectroscopic camera is a predetermined distance, and a control part that analyzes components of the measuring object based on the spectral image and the mass measured by the mass measurement part.Type: ApplicationFiled: November 13, 2014Publication date: May 21, 2015Inventor: Kazunori SAKURAI
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Publication number: 20150138561Abstract: A spectroscopic measurement apparatus includes a wavelength tunable interference filter that selects light of a predetermined wavelength from incident light, allows the selected light to exit, and is capable of changing the wavelength of the light that is allowed to exit, a light dividing element that divides the exiting light having exited out of the wavelength tunable interference filter into a plurality of light fluxes, and a first light receiving device and a second light receiving device that are provided in correspondence with the plurality of divided light fluxes divided by the light dividing element and have sensitivities different from each other.Type: ApplicationFiled: November 18, 2014Publication date: May 21, 2015Inventors: Akira SANO, Tomohiro MAKIGAKI, Kazunori SAKURAI
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Patent number: 9019611Abstract: An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate.Type: GrantFiled: April 24, 2014Date of Patent: April 28, 2015Assignee: Seiko Epson CorporationInventor: Kazunori Sakurai
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Publication number: 20140285799Abstract: A spectroscopic camera includes a light incident section provided with an incident angle limiter and first alignment marks, a wavelength tunable interference filter provided with second alignment marks, and a circuit substrate provided with an imaging device and third alignment marks. The amount of deviation of a mechanical central axis of each of the components from an ideal central axis thereof and the angle of rotation indicating the direction of the deviation are measured, and the positions of the first alignment marks and the second alignment marks relative to each other and the positions of the second alignment marks and the third alignment marks relative to each other are so adjusted that the ideal central axes coincide with one another.Type: ApplicationFiled: March 24, 2014Publication date: September 25, 2014Applicant: Seiko Epson CorporationInventor: Kazunori SAKURAI
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Publication number: 20140233103Abstract: An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate.Type: ApplicationFiled: April 24, 2014Publication date: August 21, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Kazunori SAKURAI
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Publication number: 20140192077Abstract: An image display device includes a display section adapted to display an image, a photometric section including a variable wavelength interference filter adapted to transmit light with a predetermined wavelength from incident light and a photosensor adapted to detect light obtained by dispersion, and disposed so as to be opposed to the display section, and a control section adapted to control the display section and the photometric section, and the control section obtains a spectrum of the incident light based on light intensity of the light detected by the photosensor, and then performs a color correction of the display section based on the spectrum.Type: ApplicationFiled: January 7, 2014Publication date: July 10, 2014Applicant: Seiko Epson CorporationInventors: Tsugio GOMI, Kazunori SAKURAI
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Patent number: 8743461Abstract: An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate.Type: GrantFiled: February 16, 2012Date of Patent: June 3, 2014Assignee: Seiko Epson CorporationInventor: Kazunori Sakurai
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Publication number: 20130229646Abstract: A component analyzer includes a casing, a light source unit, a light incident unit guiding light from a test object into the casing, a tunable interference filter extracting light having a predetermined wavelength from the incident light, an imaging unit receiving the extracted light and taking a spectroscopic image, a control unit performing a component analysis of the test object based on the spectroscopic images, and a display displaying a component analysis result. The light incident unit, the imaging unit, and the control unit are provided within the casing. The tunable interference filter includes a fixed substrate having a fixed reflection film and a movable substrate provided to face the fixed substrate and having a movable reflection film opposed to the fixed reflection film across a gap between reflection films, and an electrostatic actuator changing the gap between reflection films.Type: ApplicationFiled: February 27, 2013Publication date: September 5, 2013Applicant: SEIKO EPSON CORPORATIONInventor: Kazunori SAKURAI
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Publication number: 20120212824Abstract: An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate.Type: ApplicationFiled: February 16, 2012Publication date: August 23, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Kazunori SAKURAI
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Publication number: 20110299073Abstract: A colorimetric instrument includes a power control section adapted to vary the power to be applied to the light source between the wavelengths in accordance with at least one of spectral characteristics of the light source, spectral characteristics of the measurement optical system, and light receiving sensitivity characteristics of the light receiving section.Type: ApplicationFiled: April 15, 2011Publication date: December 8, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Kazunori SAKURAI
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Patent number: 7944462Abstract: An exposure head includes a light emitting substrate having a transparent substrate, a plurality of light emitting elements that is disposed on one face of the transparent substrate, and one or a plurality of light detecting units that is disposed on the transparent substrate and can detect light emitted from the plurality of light emitting elements and propagating inside the transparent substrate. The light that is emitted from the plurality of light emitting elements and is transmitted through the transparent substrate is projected on an image carrier that faces the plurality of light emitting elements with the transparent substrate interposed therebetween so as to form a predetermined pattern on the image carrier. Inside the transparent substrate, a plurality of reformation points that diffusely reflects light propagating inside the transparent substrate is formed.Type: GrantFiled: January 26, 2009Date of Patent: May 17, 2011Assignee: Seiko Epson CorporationInventor: Kazunori Sakurai