Patents by Inventor Hidehiko Kuroda

Hidehiko Kuroda 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: 10175471
    Abstract: It is an object of the present invention to drive a mirror in a wide driving range and at a fast response speed. An imaging device 100 includes an imaging element 103, a mirror 102, a lens 101, and a mirror tilt actuator 110. The imaging element 103 images subject light that is reflected light from a subject. The mirror 102 reflects the subject light, and makes the subject light incident on the imaging element 103. The lens 101 collects the subject light on the mirror 102. The mirror tilt actuator 110 drives the mirror 102 so as to change an optical axis of the lens OAL. The optical axis of the lens OAL is an optical axis to be incident on the central part C of the imaging element 103 in the subject light exited from the lens 101.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: January 8, 2019
    Assignee: NEC CORPORATION
    Inventors: Isamu Kumihashi, Kazuyuki Egashira, Kazuhiko Aoki, Hidehiko Kuroda
  • Patent number: 10102934
    Abstract: A reactor state monitoring apparatus including: a first gamma ray-dose measurement device that detects and measures an atmospheric radiation dose caused by radioactive substances on a containment vessel side respective to a biological shielding wall surrounding a pressure vessel and outside the pressure vessel; a second gamma ray-dose measurement device that detects and measures a radiation dose on the pressure vessel side respective to the biological shielding wall; a fuel radiation measuring device that detects and measures a radiation dose of fuel in the pressure vessel; and a water amount evaluation device that calculates a difference between radiation doses measured by the fuel radiation measuring device and the first gamma ray-dose measurement device as a corrected fuel radiation dose, and acquires a cooling water level as a water level evaluation value, based on the radiation dose measured by the second gamma ray-dose measurement device and the corrected fuel radiation dose.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 16, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mikio Izumi, Hidehiko Kuroda, Yuka Takada, Makoto Takemura, Hiroaki Kenjyo
  • Publication number: 20180246478
    Abstract: An isolation management system comprising: a database configured to store information which relates to a plant constructed with a plurality of components, the information comprising a relationship between the plurality of components; a receiver configured to receive designation of a targeted area information defining a target area in the plant; an analyzer configured to analyze a plurality of patterns of respective states of the plurality of components in connection with a changing state of at least one of the plurality of components in the targeted area, based on the information stored in the database; deep learning circuitry configured to extract at least one specific pattern from the plurality of patterns analyzed by the analyzer as an extraction pattern; a plan generator configured to generate a work plan based on the extraction pattern; and an output interface configured to output the work plan generated by the plan generator.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions Corporation
    Inventors: Kei TAKAKURA, Susumu NAITO, Hidehiko KURODA, Hiroki SHIBA
  • Patent number: 9927536
    Abstract: A radiation detection apparatus includes a selecting unit that allows a light having a light emission wavelength and a polarization direction to pass thorough the selecting unit, an optical system that forms an image of the light, a photon detecting unit that observes the image formed by the optical system, and detects the photon in whole range of the entire image, a counting unit that calculates the number of the alpha rays based on a result of counting the photons derived from the light emission of gas excited by the alpha rays, whereby it is possible to sufficiently eliminate background light (noise light) even if background light is strong, and therefore observe weak light emission.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 27, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidehiko Kuroda, Kunihiko Nakayama, Kei Takakura, Mikio Izumi, Naoto Kume
  • Patent number: 9910163
    Abstract: An alpha ray observation device and an alpha ray observation method are provided that can correctly evaluate a signal derived from alpha rays. The alpha ray observation device according to an embodiment includes a device housing 10, an incident window 2, a condenser 3, an optical path changer 4, and a first optical detector 5. The device housing 10 is provided with an opening. The incident window 2 is provided at the opening, and can block beta rays. Emitted light originated by alpha rays caused from the measurement object set outside of the device housing 10 enters the inside of the device housing 10 through the incident window 2 with beta rays being blocked, and is condensed by the condenser 3, and the optical path is changed by the optical path changer 4, and subsequently the light is detected by the first optical detector 5. The first optical detector 5 outputs a signal according to the amount of detected light.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 6, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoto Kume, Kei Takakura, Hidehiko Kuroda, Yukio Yoshimura
  • Publication number: 20180024350
    Abstract: It is an object of the present invention to drive a mirror in a wide driving range and at a fast response speed. An imaging device 100 includes an imaging element 103, a mirror 102, a lens 101, and a mirror tilt actuator 110. The imaging element 103 images subject light that is reflected light from a subject. The mirror 102 reflects the subject light, and makes the subject light incident on the imaging element 103. The lens 101 collects the subject light on the mirror 102. The mirror tilt actuator 110 drives the mirror 102 so as to change an optical axis of the lens OAL. The optical axis of the lens OAL is an optical axis to be incident on the central part C of the imaging element 103 in the subject light exited from the lens 101.
    Type: Application
    Filed: February 10, 2016
    Publication date: January 25, 2018
    Applicant: NEC Corporation
    Inventors: Isamu KUMIHASHI, Kazuyuki EGASHIRA, Kazuhiko AOKI, Hidehiko KURODA
  • Publication number: 20170205513
    Abstract: An alpha ray observation device and an alpha ray observation method are provided that can correctly evaluate a signal derived from alpha rays. The alpha ray observation device according to an embodiment includes a device housing 10, an incident window 2, a condenser 3, an optical path changer 4, and a first optical detector 5. The device housing 10 is provided with an opening. The incident window 2 is provided at the opening, and can block beta rays. Emitted light originated by alpha rays caused from the measurement object set outside of the device housing 10 enters the inside of the device housing 10 through the incident window 2 with beta rays being blocked, and is condensed by the condenser 3, and the optical path is changed by the optical path changer 4, and subsequently the light is detected by the first optical detector 5. The first optical detector 5 outputs a signal according to the amount of detected light.
    Type: Application
    Filed: July 23, 2015
    Publication date: July 20, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoto KUME, Kei TAKAKURA, Hidehiko KURODA, Yukio YOSHIMURA
  • Patent number: 9625273
    Abstract: A thickness measurement apparatus and method to measure an object to be inspected. The thickness measurement apparatus includes: an ultrasonic wave transmission/reception device that receives/transmits an ultrasonic wave to/from a wall of a pipe to be inspected, covered with a heat insulation material; a support device that supports the ultrasonic wave transmission/reception device from an outer surface of the pipe to be inspected; a thickness calculation device that measures a propagation time of the ultrasonic wave received/transmitted by the ultrasonic wave transmission/reception device, and calculates thickness of the pipe to be inspected; a calibration board with a predetermined thickness greater than a thickness of a dead zone of the ultrasonic wave transmission/reception device; and a calibration board adjustment device that moves the calibration board toward and away from a gap between the ultrasonic wave transmission/reception device and the outer surface of the pipe to be inspected.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: April 18, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidehiko Kuroda, Yoshihiro Yamashita, Akio Sumita
  • Patent number: 9557208
    Abstract: Provided is a liquid level measuring technique capable of measuring a liquid level with high accuracy even if a liquid stored in a container is boiling.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 31, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidehiko Kuroda, Naruhiko Mukai, Osamu Kawakami, Makoto Takemura, Yuka Takada, Fujio Shiraishi
  • Patent number: 9523776
    Abstract: An embodiment of a radiation detector has: a light collecting member; a photo detector that can receive light collected by the light collecting member and count number of photons; a wavelength selector that can selectively transmit light based on the light emission of gas caused by alpha rays by selectively transmitting light of a wavelength in a specific range; a shielding device that is can switch between an opened state in which it transmits light and a closed state in which it shields light; and a counting unit that calculates an alpha dose based on a difference calculated by subtracting number of noise photons detected in the photo detector within a predetermined time period when the shielding device is in the closed state from the number of photons received by the photo detector within the predetermined time period when the shielding device is opened state.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: December 20, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidehiko Kuroda, Kunihiko Nakayama, Kei Takakura, Mikio Izumi
  • Patent number: 9285264
    Abstract: A vibration measuring apparatus for nuclear reactor internal structure includes a holder which has an opening contact on a surface of a pressure vessel of a nuclear reactor; a vibrator accommodated in the holder so as to transmit or receive an ultrasonic wave; a couplant with which the holder is filled up; and, a bias component applies a biasing force to the vibrator in the direction of the opening; The couplant is a solid state of metal material at normal temperature and change to liquid stage by heat transfer from the pressure vessel.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: March 15, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Katsuhiko Sato, Hidehiko Kuroda, Mitsuhiro Enomoto, Hidefumi Amanai, Tooru Ootsubo
  • Patent number: 9279889
    Abstract: A light detecting unit of an alpha ray observation device observes an alpha ray by measuring generated light that is generated by the alpha ray produced in a region of a to-be-measured object. The light detecting unit has a travel direction changing unit that changes the direction of travel of generated light, a light detector that detects direction-changed light, which is the generated light after the direction of travel is changed, and a shielding member that shields the light detector from radiation and has a portion that is provided on the line from the to-be-measured object to the light detector. The shielding member may also surround the perimeter of the light detector and have an opening to allow generated light to reach the travel direction changing unit.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 8, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naoto Kume, Hidehiko Kuroda, Kunihiko Nakayama, Kei Takakura
  • Publication number: 20150369932
    Abstract: An alpha ray observation apparatus, according to an embodiment, that observes alpha rays by detecting alpha ray caused light generated from an alpha ray source in a to-be-observed object, including: an alpha ray caused light wavelength selecting unit that can select light including wavelength of the alpha ray caused light; an alpha ray caused light detecting unit that measures an amount of alpha ray caused light; a short-side wavelength selecting unit that can select light of a short-side wavelength that is shorter than the wavelength of the alpha ray caused light; a short-side wavelength light detecting unit; a long-side wavelength selecting unit that can select light of a long-side wavelength that longer than the wavelength of the alpha ray caused light; a long-side wavelength light detecting unit; and a correction unit that calculates a corrected light amount by correcting the amount of the alpha ray caused light.
    Type: Application
    Filed: February 12, 2014
    Publication date: December 24, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoto KUME, Hidehiko KURODA, Kunihiko NAKAYAMA, Kei TAKAKURA
  • Publication number: 20150323681
    Abstract: A light detecting unit of an alpha ray observation device observes an alpha ray by measuring generated light that is generated by the alpha ray produced in a region of a to-be-measured object. The light detecting unit has a travel direction changing unit that changes the direction of travel of generated light, a light detector that detects direction-changed light, which is the generated light after the direction of travel is changed, and a shielding member that shields the light detector from radiation and has a portion that is provided on the line from the to-be-measured object to the light detector. The shielding member may also surround the perimeter of the light detector and have an opening to allow generated light to reach the travel direction changing unit.
    Type: Application
    Filed: January 30, 2014
    Publication date: November 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoto KUME, Hidehiko KURODA, Kunihiko NAKAYAMA, Kei TAKAKURA
  • Publication number: 20150323678
    Abstract: An embodiment of a radiation detector has: a light collecting member; a photo detector that can receive light collected by the light collecting member and count number of photons; a wavelength selector that can selectively transmit light based on the light emission of gas caused by alpha rays by selectively transmitting light of a wavelength in a specific range; a shielding device that is can switch between an opened state in which it transmits light and a closed state in which it shields light; and a counting unit that calculates an alpha dose based on a difference calculated by subtracting number of noise photons detected in the photo detector within a predetermined time period when the shielding device is in the closed state from the number of photons received by the photo detector within the predetermined time period when the shielding device is opened state.
    Type: Application
    Filed: September 2, 2014
    Publication date: November 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidehiko KURODA, Kunihiko Nakayama, Kei Takakura, Mikio Izumi
  • Patent number: 9099206
    Abstract: According to an embodiment, a nuclear reactor monitoring device comprises: an ultrasonic wave transmission means which is installed on the outside surface of a reactor pressure vessel and transmits ultrasonic pulses to the interior of the reactor pressure vessel; an ultrasonic wave receiving means which is installed on the outside surface of the reactor pressure vessels and receives reflected pulses including ultrasonic waves from the ultrasonic pulses reflected by an inspection object in the reactor pressure vessel; a preprocessing means which specifies and removes the reflected ultrasonic pulses generated in the wall of the reactor pressure vessel from the reflected pulse signal received by the ultrasonic wave receiving means or selectively extracts the reflected pulse signal; and a calculation means which determines the vibration of the inspection object from the reflection pulse signal processed by the preprocessing means in accordance with the observation time of the inspection object.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: August 4, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidehiko Kuroda, Tooru Ootsubo
  • Publication number: 20150090889
    Abstract: A radiation detection apparatus includes a selecting unit that allows a light having a light emission wavelength and a polarization direction to pass thorough the selecting unit, an optical system that forms an image of the light, a photon detecting unit that observes the image formed by the optical system, and detects the photon in whole range of the image, a counting unit that calculates the number of the alpha ray based on a result of counting the photon derived from the light emission of gas excited by the alpha ray, and is possible to sufficiently eliminate background light (noise light) even if background light is strong, and therefore observe weak light emission.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidehiko KURODA, Kunihiko NAKAYAMA, Kei TAKAKURA, Mikio IZUMI, Naoto KUME
  • Publication number: 20150036778
    Abstract: A reactor state monitoring apparatus including: a first gamma ray-dose measurement device that detects and measures an atmospheric radiation dose caused by radioactive substances on a containment vessel side respective to a biological shielding wall surrounding a pressure vessel and outside the pressure vessel; a second gamma ray-dose measurement device that detects and measures a radiation dose on the pressure vessel side respective to the biological shielding wall; a fuel radiation measuring device that detects and measures a radiation dose of fuel in the pressure vessel; and a water amount evaluation device that calculates a difference between radiation doses measured by the fuel radiation measuring device and the first gamma ray-dose measurement device as a corrected fuel radiation dose, and acquires a cooling water level as a water level evaluation value, based on the radiation dose measured by the second gamma ray-dose measurement device and the corrected fuel radiation dose.
    Type: Application
    Filed: December 21, 2012
    Publication date: February 5, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mikio Izumi, Hidehiko Kuroda, Yuka Takada, Makoto Takemura, Hiroaki Kenjyo
  • Publication number: 20140366626
    Abstract: Provided is a liquid level measuring technique capable of measuring a liquid level with high accuracy even if a liquid stored in a container is boiling.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 18, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidehiko Kuroda, Naruhiko Mukai, Osamu Kawakami, Makoto Takemura, Yuka Takada, Fujio Shiraishi
  • Patent number: 8774340
    Abstract: A nuclear reactor vibration surveillance system has a first ultrasonic transducer for transmission, an ultrasonic transmitter, a second ultrasonic transducer for reception, an ultrasonic receiver, a signal processor, and a display unit. The first ultrasonic transducer for transmission is arranged on the outer surface of a reactor pressure vessel and is configured to convert a transmission signal into an ultrasonic pulse signal and allow the ultrasonic pulse to be transmitted to a reactor internal component. The second ultrasonic transducer for reception is arranged on the outer surface of the reactor pressure vessel and is configured to receive a reflected ultrasonic pulse reflected by the reactor internal component and convert the received reflected ultrasonic pulse into a reception signal.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: July 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidehiko Kuroda, Mikio Izumi, Mitsuhiro Enomoto, Masaki Yoda, Mieko Sato