Patents by Inventor Yuji Oki

Yuji Oki 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).

  • Patent number: 11313798
    Abstract: An optical measuring device for measuring light emitted from a sample includes a container cavity for receiving a container in which the sample is enclosed; a light detection unit for detecting light from the sample; a light guide path for guiding the light from the sample to the light detection unit; and a light absorbing unit for absorbing incident light. An end of the light guide path to receive the incident light faces the container cavity, a light exit end of the light guide path faces the light detection unit, and the light absorbing unit covers the perimeter of the light guide path other than the light-receiving-end and the light exit end thereof.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: April 26, 2022
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Ushio Denki Kabushiki Kaisha
    Inventors: Yuji Oki, Kinichi Morita
  • Publication number: 20220050048
    Abstract: A microplate reader includes a plurality of sets of: a light emitting portion disposed on one side of a microplate and corresponding to one well of the microplate; a light receiving portion disposed on an opposite side to the light emitting portion across the microplate and corresponding to one well of the microplate; and a light receiving light guide path disposed between the light receiving portion and the microplate and guiding light emitted from the light emitting portion and passing through a sample contained in the well to the light receiving portion. The microplate reader further includes a light guiding section configured to enclose a plurality of the light receiving light guide paths by an enclosure member made of a pigment-containing resin containing a pigment having a light-absorbing property. Light emitted from one light emitting portion passing through one light receiving light guide path and reaching one light receiving portion.
    Type: Application
    Filed: September 5, 2019
    Publication date: February 17, 2022
    Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Kinichi MORITA, Shinji SUZUKI, Yuji OKI
  • Patent number: 11009457
    Abstract: A microplate reader includes multiple light projecting/receiving units, the number of the light projecting/receiving units being equal to or greater than the number of wells of the microplate, each light projecting/receiving unit including a light projecting unit and a light receiving unit that correspond to one of the wells of the microplate; a reflection member configured to reflect light having passed through samples stored in the wells from the light projecting/receiving units to the light projecting/receiving units; and a light guide part including projecting-light guide paths each configured to guide the light emitted from the light projecting unit to the sample, receiving-light guide paths each configured to guide the light reflected by the reflection member and having passed through the sample to the light receiving unit, and a surrounding member including a pigment-containing resin surrounding the projecting-light guide paths and the receiving-light guide paths.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: May 18, 2021
    Assignees: Ushio Denki Kabushiki Kaisha, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Kinichi Morita, Hiroyuki Ohashi, Shinji Suzuki, Yuji Oki
  • Publication number: 20200348230
    Abstract: A microplate reader includes multiple light projecting/receiving units, the number of the light projecting/receiving units being equal to or greater than the number of wells of the microplate, each light projecting/receiving unit including a light projecting unit and a light receiving unit that correspond to one of the wells of the microplate; a reflection member configured to reflect light having passed through samples stored in the wells from the light projecting/receiving units to the light projecting/receiving units; and a light guide part including projecting-light guide paths each configured to guide the light emitted from the light projecting unit to the sample, receiving-light guide paths each configured to guide the light reflected by the reflection member and having passed through the sample to the light receiving unit, and a surrounding member including a pigment-containing resin surrounding the projecting-light guide paths and the receiving-light guide paths.
    Type: Application
    Filed: August 30, 2018
    Publication date: November 5, 2020
    Applicants: Ushio Denki Kabushiki Kaisha, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Kinichi MORITA, Hiroyuki OHASHI, Shinji SUZUKI, Yuji OKI
  • Patent number: 10739506
    Abstract: The purpose of the present invention is to provide an optical member and the like which enable suppression of diffusion of stray light due to a pigment even when the optical member and the like are used adjacent to a light guiding part through which incident light is transmitted. The optical member is configured to be used adjacent to the light guiding part through which the incident light is transmitted and to attenuate the incident light. The optical member has a dispersed carbon particle part that is formed as a result of dispersion of carbon particles in a particular region in a silicone resin. The carbon particles are stray light diffusion suppressing particles for suppressing the intensity of light being incident onto the carbon particles and diffused.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 11, 2020
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, USHIO DENKI KABUSHIKI KAISHA
    Inventors: Yuji Oki, Kinichi Morita
  • Publication number: 20200173920
    Abstract: An optical measuring device for measuring light emitted from a sample includes a container cavity for receiving a container in which the sample is enclosed; a light detection unit for detecting light from the sample; a light guide path for guiding the light from the sample to the light detection unit; and a light absorbing unit for absorbing incident light. An end of the light guide path to receive the incident light faces the container cavity, a light exit end of the light guide path faces the light detection unit, and the light absorbing unit covers the perimeter of the light guide path other than the light-receiving-end and the light exit end thereof.
    Type: Application
    Filed: June 29, 2018
    Publication date: June 4, 2020
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Ushio Denki Kabushiki Kaisha
    Inventors: Yuji OKI, Kinichi MORITA
  • Publication number: 20200064262
    Abstract: A first aspect of the present invention is an optical member that blocks straight traveling of light of a second wavelength rather than straight traveling of light of a first wavelength, and is provided with a silicone resin part, and optical material particles dispersed in the silicone resin part, wherein the refractive indexes of the silicone resin part and the optical material particles match at the first wavelength, and do not match at the second wavelength. Consequently, it becomes possible to provide an optical member or the like that selectively transmit a specific wavelength (the first wavelength) by a member different from those of conventional optical elements.
    Type: Application
    Filed: November 30, 2017
    Publication date: February 27, 2020
    Applicants: Kyushu University, National University Corporation, Ushio Denki Kabushiki Kaisha
    Inventors: Yuji OKI, Kinichi MORITA, Hiroyuki OHASHI
  • Patent number: 10498101
    Abstract: A method for producing an organic microdisk structure 40, which is characterized by comprising: a cladding layer formation step 1 wherein a cladding layer 12 is formed by printing a first ink 11 that contains a fluorine-containing hyperbranched polymer on a substrate 10 by an inkjet method; a core layer formation step 2 wherein a core layer 22 is formed by printing a second ink 21 that contains a laser dye and a triazine-based hyperbranched polymer containing no fluorine on the cladding layer 12 by an inkjet method; and an etching step 3 wherein the cladding layer 12 is etched using a solvent 31 that dissolves only the fluorine-containing hyperbranched polymer. Consequently, an unconventional novel method for producing an organic microdisk structure with use of an inkjet method is able to be provided.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: December 3, 2019
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuji Oki, Hiroaki Yoshioka, Kei Yasui, Masaaki Ozawa
  • Publication number: 20190011624
    Abstract: The purpose of the present invention is to provide an optical member and the like which enable suppression of diffusion of stray light due to a pigment even when the optical member and the like are used adjacent to a light guiding part through which incident light is transmitted. The optical member is configured to be used adjacent to the light guiding part through which the incident light is transmitted and to attenuate the incident light. The optical member has a dispersed carbon particle part that is formed as a result of dispersion of carbon particles in a particular region in a silicone resin. The carbon particles are stray light diffusion suppressing particles for suppressing the intensity of light being incident onto the carbon particles and diffused.
    Type: Application
    Filed: April 22, 2016
    Publication date: January 10, 2019
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, USHIO DENKI KABUSHIKI KAISHA
    Inventors: Yuji OKI, Kinichi MORITA
  • Patent number: 9863878
    Abstract: In order to carry out various analyses at high accuracy in a site where analysis is needed using a disposable microchip, the microchip is disposed on a display of a tablet terminal device, and a sample or specimen is dropped into a flow path of the microchip to trigger a reaction of the sample in the microchip. Light emitted from the display of the tablet terminal device is applied to the microchip, and the reaction caused by the applied light in the microchip is measured. When an induced fluorescence method using the applied light is adopted as a measuring method, fluorescence that corresponds to the reaction is observed, and detected by, for example, a built-in camera of the tablet terminal device. The detection signal is analyzed by an arithmetic unit of the tablet terminal device.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 9, 2018
    Assignees: USHIO DENKI KABUSHIKI KAISHA, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Yuji Oki, Kinichi Morita
  • Publication number: 20170264066
    Abstract: A method for producing an organic microdisk structure 40, which is characterized by comprising: a cladding layer formation step 1 wherein a cladding layer 12 is formed by printing a first ink 11 that contains a fluorine-containing hyperbranched polymer on a substrate 10 by an inkjet method; a core layer formation step 2 wherein a core layer 22 is formed by printing a second ink 21 that contains a laser dye and a triazine-based hyperbranched polymer containing no fluorine on the cladding layer 12 by an inkjet method; and an etching step 3 wherein the cladding layer 12 is etched using a solvent 31 that dissolves only the fluorine-containing hyperbranched polymer. Consequently, an unconventional novel method for producing an organic microdisk structure with use of an inkjet method is able to be provided.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 14, 2017
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuji OKI, Hiroaki YOSHIOKA, Kei YASUI, Masaaki OZAWA
  • Patent number: 9683936
    Abstract: A laser light source for emitting excitation light, a sample case, a photomultiplier tube, a fluorescence collecting optical system and so forth are embedded in a resin material that is transparent to the excitation light and the light including fluorescence emitted from a sample. The resin material is provided in at least part of a light path that guides the fluorescence in the fluorescence collecting optical system, and this resin forms a housing that holds the laser light source, the fluorescence collecting optical system, the photomultiplier and so forth. A pigment having wavelength characteristics for absorbing the excitation light, Raman light generated from the resin, and so forth is contained substantially in a uniform manner in a resin region that surrounds the light path through which the excitation light and the light including the fluorescence pass.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: June 20, 2017
    Assignees: USHIO DENKI KABUSHIKI KAISHA, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Yuji Oki, Hiroaki Yoshioka, Kinichi Morita
  • Patent number: 9448169
    Abstract: A light measuring arrangement maintains the initial filtering function of an optical filter having a dye dispersed therein. The light measuring arrangement includes a measuring unit configured to measure an intensity of light emitted from a measurement target at a predetermined wavelength. The light measuring arrangement also includes the optical filter unit having the dye. The light measuring arrangement also includes a dye diffusion restricting unit configured to restrict diffusion of the dye from the optical filter unit. The optical filter unit constitutes part of an optical path for the light traveling from the measurement target to the light measuring unit.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: September 20, 2016
    Assignees: Kyushu University, National University Corporation, Ushio Denki Kabushiki Kaisha
    Inventors: Hiroaki Yoshioka, Yuji Oki, Kinichi Morita
  • Publication number: 20160011114
    Abstract: In order to carry out various analyses at high accuracy in a site where analysis is needed using a disposable microchip, the microchip is disposed on a display of a tablet terminal device, and a sample or specimen is dropped into a flow path of the microchip to trigger a reaction of the sample in the microchip. Light emitted from the display of the tablet terminal device is applied to the microchip, and the reaction caused by the applied light in the microchip is measured. When an induced fluorescence method using the applied light is adopted as a measuring method, fluorescence that corresponds to the reaction is observed, and detected by, for example, a built-in camera of the tablet terminal device. The detection signal is analyzed by an arithmetic unit of the tablet terminal device.
    Type: Application
    Filed: February 20, 2014
    Publication date: January 14, 2016
    Applicants: USHIO DENKI KABUSHIKI KAISHA, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Yuji OKI, Kinichi MORITA
  • Publication number: 20150241353
    Abstract: A method for optical analysis, which enables a point of care testing to optically analyze a specimen with a disposal microchip. The method uses a portable terminal device having a processing unit, a light receiving unit, and a display unit for displaying processing results of the processing unit. The microchip has a light introducing portion and a light emitting portion, but does not have a light source. The specimen is held in an optical path extending from the light introducing portion to the light emitting portion. The specimen is irradiated with light for analysis of the specimen. The method includes preparing another optical path for guiding light emitted from the light emitting portion of the microchip to the light receiving portion, and introducing the light into the light introducing portion.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 27, 2015
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, USHIO DENKI KABUSHIKI KAISHA
    Inventors: Yuji OKI, Kinichi MORITA
  • Publication number: 20150153279
    Abstract: A laser light source for emitting excitation light, a sample case, a photomultiplier tube, a fluorescence collecting optical system and so forth are embedded in a resin material that is transparent to the excitation light and the light including fluorescence emitted from a sample. The resin material is provided in at least part of a light path that guides the fluorescence in the fluorescence collecting optical system, and this resin forms a housing that holds the laser light source, the fluorescence collecting optical system, the photomultiplier and so forth. A pigment having wavelength characteristics for absorbing the excitation light, Raman light generated from the resin, and so forth is contained substantially in a uniform manner in a resin region that surrounds the light path through which the excitation light and the light including the fluorescence pass.
    Type: Application
    Filed: July 5, 2013
    Publication date: June 4, 2015
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, USHIO DENKI KABUSHIKI KAISHA
    Inventors: Yuji Oki, Hiroaki Yoshioka, Kinichi Morita
  • Patent number: 9048628
    Abstract: The challenge of providing a long-life solid-state dye laser medium is tackled. This challenge is solved by a solid-state dye laser medium comprising a polydimethylsiloxane, and a dye dissolved in the polydimethylsiloxane. The dye is preferably a pyrromethene dye.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: June 2, 2015
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hiroaki Yoshioka, Yuji Oki, Yu Yang
  • Publication number: 20150085282
    Abstract: A light measuring arrangement maintains the initial filtering function of an optical filter having a dye dispersed therein. The light measuring arrangement includes a measuring unit configured to measure an intensity of light emitted from a measurement target at a predetermined wavelength. The light measuring arrangement also includes the optical filter unit having the dye. The light measuring arrangement also includes a dye diffusion restricting unit configured to restrict diffusion of the dye from the optical filter unit. The optical filter unit constitutes part of an optical path for the light traveling from the measurement target to the light measuring unit.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 26, 2015
    Applicants: USHIO DENKI KABUSHIKI KAISHA, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hiroaki YOSHIOKA, Yuji OKI, Kinichi MORITA
  • Publication number: 20140294032
    Abstract: The challenge of providing a long-life solid-state dye laser medium is tackled. This challenge is solved by a solid-state dye laser medium comprising a polydimethylsiloxane, and a dye dissolved in the polydimethylsiloxane. The dye is preferably a pyrromethene dye.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 2, 2014
    Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hiroaki Yoshioka, Yuji Oki, Yu Yang
  • Patent number: 8354073
    Abstract: The present invention provides an inspection chip using light, which is able to provide an irradiation of light at a high precision. The present invention further provides an inspection chip capable of carrying out the inspection of a sample in a simple manner by using a plurality of lights. The inspection chip of the present invention comprises a light amplifier element and a sample holding section for holding a sample, in which the light amplifier element is oriented so as to face to the sample holding section, so that the light emitted from the light amplifier element can irradiate the sample held in the sample holding section.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: January 15, 2013
    Assignee: Kyushu University, National University Corporation
    Inventors: Yuji Oki, Satoru Kuhara