Patents by Inventor Katsumasa Fujita
Katsumasa Fujita 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: 20240132332Abstract: A position estimation system is a position estimation system for estimating a position of a forklift equipped with a camera and includes: a position estimation unit configured to estimate a position of the forklift on the basis of a feature included in an image captured by the camera; and an inclusion determination unit configured to calculate, on the basis of a position in a height direction of a mast with which the forklift is equipped, an inclusion range indicating a range in which the mast is in the image and determine to stop estimation of the position by using the position estimation unit when the inclusion range calculated exceeds an allowable range.Type: ApplicationFiled: October 15, 2023Publication date: April 25, 2024Applicant: Mitsubishi Logisnext Co., Ltd.Inventors: Katsumasa KITAJIMA, Yusuke KINOUCHI, Masahiro YAMADA, Takumi FUJITA, Takuya AKASHI
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Publication number: 20240135573Abstract: A position estimating device is a position estimating device that estimates a position of a vehicle equipped with a camera and includes a position estimating unit configured to estimate the position of the vehicle by image processing of an image captured by the camera and a load control unit configured to control a processing load of the image processing by controlling an execution timing of the image processing performed by the position estimating unit and/or the image to be subjected to the image processing.Type: ApplicationFiled: October 15, 2023Publication date: April 25, 2024Applicant: Mitsubishi Logisnext Co., Ltd.Inventors: Katsumasa KITAJIMA, Yusuke KINOUCHI, Masahiro YAMADA, Takumi FUJITA, Takuya AKASHI
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Publication number: 20240110830Abstract: A spectrometry apparatus (1) according to an embodiment includes a detection object lens that signal light from a sample S enters, a slit (41) through which the signal light passes, a wavelength dispersive element that disperses the signal light having passed the slit (41) in accordance with a wavelength, an optical detector (50) that detects the signal light that has been subjected to wavelength dispersion in the wavelength dispersive element, scanning means for scanning a detection region of the optical detector (50) in the sample, a processing unit (51) that generates a spectral image, based on a detection signal of the optical detector (50), and an illumination optical system (10) that illuminates the sample from a side of the detection object lens.Type: ApplicationFiled: December 20, 2021Publication date: April 4, 2024Inventors: Katsumasa FUJITA, Kazuki BANDO
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Publication number: 20240102924Abstract: A diagnostic optical microscope according to the present embodiment includes at least one laser light source (11) configured to generate laser light for illuminating a sample (40) containing a light absorbing material, a lens configured to focus the laser light to be focused on the sample (40), scanning means for changing a focusing position of the laser light on the sample (40), and a light detector (31) configured to detect laser light transmitted through the sample (40) as signal light. A laser light intensity is changed to obtain a nonlinear region in which the laser light intensity and a signal light intensity have a nonlinear relation due to occurrence of saturation of absorption in the light absorbing material when the laser light intensity is maximized. An image is generated based on a nonlinear component of the signal light based on the saturation of absorption in the light absorbing material.Type: ApplicationFiled: January 19, 2022Publication date: March 28, 2024Inventors: Katsumasa FUJITA, Kentaro NISHIDA, Hikaru SATO, Hideo TANAKA, Yoshinori Harada
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Publication number: 20240053258Abstract: An optical module according to the present embodiment includes: a first lens array unit in which a plurality of first lenses configured to collect irradiating light are arranged; a second lens array unit which includes a plurality of second lenses and on which signal light from the first lenses is incident; and a plurality of beam splitters configured to reflect irradiating light to the first lenses and to transmit the signal light from the first lenses, wherein reflectance of the beam splitter on a nearest side in a travel direction of the irradiating light is set lowest and the more toward a far side in the travel direction, the higher the reflectance of the beam splitters.Type: ApplicationFiled: November 24, 2021Publication date: February 15, 2024Inventors: KATSUMASA FUJITA, Kazuki BANDO, Hiroyuki KAWAGOE
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Publication number: 20220283154Abstract: Disclosed is a preparation method for preparing a measurement sample comprising an aggregate of metal nanoparticles having an analyte bound thereto, the preparation method comprising: contacting the analyte with a linker to bind the analyte to the linker; and contacting the linker that has been bound to the analyte with the metal nanoparticles to bind the linker to the metal nanoparticles.Type: ApplicationFiled: March 4, 2022Publication date: September 8, 2022Applicants: SYSMEX CORPORATION, OSAKA UNIVERSITY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Yuki SHIMAOKA, Masaya Okada, Shigeki Iwanaga, Kazuki Bando, Katsumasa Fujita, Yasunori Nawa, Satoshi Fujita
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Publication number: 20220283083Abstract: Disclosed is an analytical method for analyzing a test substance contained in a measurement sample, the method comprising: generating a data set based on a plurality of optical spectra acquired from a plurality of locations in the measurement sample; inputting the data set into a deep learning algorithm having a neural network structure; and outputting information on the test substance, on the basis of an analytical result from the deep learning algorithm.Type: ApplicationFiled: March 4, 2022Publication date: September 8, 2022Applicants: SYSMEX CORPORATION, OSAKA UNIVERSITY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masaya OKADA, Yuki SHIMAOKA, Shigeki IWANAGA, Kazuki BANDO, Katsumasa FUJITA, Yasunori NAWA, Satoshi FUJITA
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Patent number: 11002601Abstract: A spectroscopic microscope according to the present embodiment includes a light source that generates laser light that enters a sample, a multi-slit part having a plurality of slits through which signal light branched by the edge filter passes, the slits being arranged in the slit width direction, and a spectrometer that disperses the signal light having passed through the slits in the dispersion direction intersecting the slit length direction and detects the signal light with a two-dimensional array photodetector.Type: GrantFiled: February 1, 2018Date of Patent: May 11, 2021Assignee: NANOPHOTON CORPORATIONInventor: Katsumasa Fujita
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Publication number: 20210031441Abstract: Provided are a stereolithography apparatus and a method for producing a shaped article which are applicable to various shaping materials. The stereolithography apparatus according to the present embodiment comprises: laser source configured to generate laser light having a wavelength of (510 n)m or shorter; objective lens configured to focus the laser light to shaping material; and scanner configured to change a focus position of the laser light to the shaping material, wherein the shaping material is cured by two-photon absorption of the laser light having a wavelength (510 n)m or shorter to form shaped article.Type: ApplicationFiled: January 29, 2019Publication date: February 4, 2021Inventors: Katsumasa FUJITA, Atsushi TAGUCHI
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Patent number: 10823612Abstract: A multifocal spectrometric device is capable of simultaneously performing a measurement of a plurality of sample with high sensitivity, with no restriction on the magnification. A multifocal spectrometric device is a device in which beams of signal light emitted from a plurality of predetermined observation areas on samples placed in a sample placement section are introduced into a spectrograph and thereby dispersed into spectra, the device including: a plurality of objective lenses (objective light-condensing sections) individually located at positions which respectively and optically face the plurality of observation areas; and spectrograph input sections provided in such a manner that each of the plurality of objective lenses has one corresponding spectrograph input section, for introducing signal light passing through the corresponding objective lenses into the spectrograph.Type: GrantFiled: January 29, 2016Date of Patent: November 3, 2020Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Mikiko Sodeoka, Katsumasa Fujita, Jun Ando
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Publication number: 20200003618Abstract: A spectroscopic microscope according to the present embodiment includes a light source that generates laser light that enters a sample, a multi-slit part having a plurality of slits through which signal light branched by the edge filter passes, the slits being arranged in the slit width direction, and a spectrometer that disperses the signal light having passed through the slits in the dispersion direction intersecting the slit length direction and detects the signal light with a two-dimensional array photodetector.Type: ApplicationFiled: February 1, 2018Publication date: January 2, 2020Inventor: Katsumasa FUJITA
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Patent number: 10352862Abstract: In a Raman spectroscopic microscope, a spatial resolution that exceeds the diffraction limit of light is achieved. A diffraction grating diffracts laser light emitted from a light source and thereby generates diffracted light. A spectroscope acquires a spectrum of incident light and a spatial distribution of light intensities of the spectrum. An optical system applies interference light formed by +1st order diffracted light and ?1st order diffracted light generated in the diffraction grating to an object to be observed as linear illumination light and guides a Raman scattered light generated by the application of the linear illumination light to the object to be observed to the spectroscope, the linear illumination light having its longitudinal direction in a first direction. A control unit controls the optical system and thereby scans the object to be observed by the linear illumination light in a second direction.Type: GrantFiled: August 18, 2015Date of Patent: July 16, 2019Assignee: NANOPHOTON CORPORATIONInventors: Katsumasa Fujita, Satoshi Kawata, Kozue Watanabe
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Patent number: 10338078Abstract: The present invention provides an apparatus having a sample separation unit, a Raman spectroscopy unit, and a mass spectrometry unit. The present invention further provides a method for specifying a biomolecule and a method for identifying the binding site of the biomolecule and the low-molecular-weight compound, comprising a combination of Raman spectroscopy and mass spectrometry. The present invention further provides a surface-enhanced Raman spectroscopy method with improved sensitivity.Type: GrantFiled: August 13, 2013Date of Patent: July 2, 2019Assignee: Japan Science and Technology AgencyInventors: Mikiko Sodeoka, Jun Ando, Miwako Asanuma, Kosuke Dodo, Katsumasa Fujita
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Publication number: 20180136040Abstract: A multifocal spectrometric device is capable of simultaneously performing a measurement of a plurality of sample with high sensitivity, with no restriction on the magnification. A multifocal spectrometric device is a device in which beams of signal light emitted from a plurality of predetermined observation areas on samples placed in a sample placement section are introduced into a spectrograph and thereby dispersed into spectra, the device including: a plurality of objective lenses (objective light-condensing sections) individually located at positions which respectively and optically face the plurality of observation areas; and spectrograph input sections provided in such a manner that each of the plurality of objective lenses has one corresponding spectrograph input section, for introducing signal light passing through the corresponding objective lenses into the spectrograph.Type: ApplicationFiled: January 29, 2016Publication date: May 17, 2018Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Mikiko SODEOKA, Katsumasa FUJITA, Jun ANDO
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Publication number: 20170276610Abstract: In a Raman spectroscopic microscope, a spatial resolution that exceeds the diffraction limit of light is achieved. A diffraction grating diffracts laser light emitted from a light source and thereby generates diffracted light. A spectroscope acquires a spectrum of incident light and a spatial distribution of light intensities of the spectrum. An optical system applies interference light formed by +1st order diffracted light and ?1st order diffracted light generated in the diffraction grating to an object to be observed as linear illumination light and guides a Raman scattered light generated by the application of the linear illumination light to the object to be observed to the spectroscope, the linear illumination light having its longitudinal direction in a first direction. A control unit controls the optical system and thereby scans the object to be observed by the linear illumination light in a second direction.Type: ApplicationFiled: August 18, 2015Publication date: September 28, 2017Inventors: Katsumasa FUJITA, Satoshi KAWATA, Kozue WATANABE
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Patent number: 9383564Abstract: A fluorescence observation method of the present invention for detecting plural types of fluorescence emitted from two or more kinds of fluorescent molecules includes: subjecting each of the two or more kinds of fluorescent molecules to multi-photon excitation by exciting light having an exciting wavelength equal to or shorter than 700 nm in a visible region, to generate fluorescence upon making use of an absorption wavelength band in a deep ultraviolet region of each of the two or more kinds of fluorescent molecules; and simultaneously detecting plural types of fluorescence generated on a shorter-wavelength side or on both of the shorter-wavelength side and a longer-wavelength side of the exciting wavelength of the exciting light.Type: GrantFiled: September 24, 2014Date of Patent: July 5, 2016Assignee: OLYMPUS CORPORATIONInventors: Katsumasa Fujita, Takeharu Nagai, Kenta Saito, Masahito Yamanaka, Shinichi Takimoto
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Publication number: 20150192590Abstract: The present invention provides an apparatus having a sample separation unit, a Raman spectroscopy unit, and a mass spectrometry unit. The present invention further provides a method for specifying a biomolecule and a method for identifying the binding site of the biomolecule and the low-molecular-weight compound, comprising a combination of Raman spectroscopy and mass spectrometry. The present invention further provides a surface-enhanced Raman spectroscopy method with improved sensitivity.Type: ApplicationFiled: August 13, 2013Publication date: July 9, 2015Applicant: Japan Science and Technology AgencyInventors: Mikiko SODEOKA, Jun ANDO, Miwako ASANUMA, Kosuke DODO, Katsumasa FUJITA
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Patent number: 9001321Abstract: Provided is a microscope and an observation method which can improve spatial resolution. A microscope according to an aspect of the invention includes a laser light source (10), an objective lens (16) that focuses light from the laser light source on a sample, and a detector (22) that detects the laser light as signal light from a sample (17) when the sample (17) is irradiated with the laser light. The light is applied to the sample with an intensity changed to obtain a nonlinear region where intensities of the light and the signal light have a nonlinear relation due to occurrence of saturation or nonlinear increase of the signal light when the light has a maximum intensity, and the detector (22) detects the signal light according to the intensity of the laser light to perform observation based on a saturation component or a nonlinear increase component of the signal light.Type: GrantFiled: February 8, 2011Date of Patent: April 7, 2015Assignee: Osaka UniversityInventors: Katsumasa Fujita, Shogo Kawano, Masahito Yamanaka, Satoshi Kawata
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Patent number: 8940906Abstract: The present invention relates to a nonlinear fluorescent molecule that generates a nonlinear fluorescence reaction by incidence of excitation light. This nonlinear fluorescence molecule includes donors and, and an acceptor that is coupled to the donors and. As the donor is excited by the incidence of the excitation light, electric charge moves from the donor to the acceptor. Then, the donor and the acceptor form a charge separated state. In a state in which the charge separated state is maintained, the donor fluoresces when transiting from an excited state to a ground state.Type: GrantFiled: June 21, 2010Date of Patent: January 27, 2015Assignee: Osaka UniversityInventors: Katsumasa Fujita, Shin Mizukami, Kazuya Kikuchi, Satoshi Kawata, Shogo Kawano
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Publication number: 20150008340Abstract: A fluorescence observation method of the present invention for detecting plural types of fluorescence emitted from two or more kinds of fluorescent molecules includes: subjecting each of the two or more kinds of fluorescent molecules to multi-photon excitation by exciting light having an exciting wavelength equal to or shorter than 700 nm in a visible region, to generate fluorescence upon making use of an absorption wavelength band in a deep ultraviolet region of each of the two or more kinds of fluorescent molecules; and simultaneously detecting plural types of fluorescence generated on a shorter-wavelength side or on both of the shorter-wavelength side and a longer-wavelength side of the exciting wavelength of the exciting light.Type: ApplicationFiled: September 24, 2014Publication date: January 8, 2015Applicant: OLYMPUS CORPORATIONInventors: Katsumasa FUJITA, Takeharu NAGAI, Kenta SAITO, Masahito YAMANAKA, Shinichi TAKIMOTO