Patents by Inventor Kentaro Nagai

Kentaro Nagai 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).

  • APPARATUS FOR ACQUIRING INFORMATION OF OBJECT, AND PROGRAM
    Publication number: 20130314714
    Abstract: An apparatus for acquiring information of an object includes an interferometer and an arithmetic unit. The interferometer includes an optical device that forms an interference pattern with light from a light source, and a detector that detects the interference pattern. The arithmetic unit acquires information related to a phase of an object using a first detection result and a second detection result detected by the detector. The arithmetic unit acquires the information related to the phase of the object using information on distribution of changes of the interferometer acquired from the first detection result and the second detection result.
    Type: Application
    Filed: May 24, 2013
    Publication date: November 28, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kentaro Nagai
  • ANALYSIS METHOD, RADIATION IMAGING APPARATUS USING ANALYSIS METHOD, AND ANALYSIS PROGRAM FOR EXECUTING ANALYSIS METHOD
    Publication number: 20130301795
    Abstract: An analysis method for use in a radiation imaging apparatus employing intensity information of interference fringes of radiation rays that have passed through a detected object includes the steps of generating first phase information of the detected object wrapped into a range of 2? from the intensity information of the interference fringes; generating information on an absorption intensity gradient of the detected object from the intensity information of the interference fringes; generating a weighting function on the basis of an absolute value of a gradient in the information on the absorption intensity gradient; and generating second phase information by unwrapping the first phase information by using the weighting function.
    Type: Application
    Filed: July 17, 2013
    Publication date: November 14, 2013
    Inventors: Kentaro Nagai, Toru Den
  • Imaging apparatus and imaging method
    Patent number: 8559594
    Abstract: An imaging apparatus analyzes a periodic pattern of a Moiré due to Talbot interference by the Fourier transform method and forms an image. The imaging apparatus includes a first grating having a structure that transmits light beams from a beam source to refract or diffract the light beams and forms a self image based on a first periodic pattern by the Talbot interference at a predetermined position; a second grating that absorbs part of the first periodic pattern and causes a Moiré to be generated based on a second periodic pattern when the second grating is arranged at a position at which the self image is formed. All cross sections of the Moiré with axes in differential directions of a wavefront for the analysis by the Fourier transform method have a two-dimensional periodic structure in which periods of patterns in the second periodic pattern are the same.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: October 15, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chidane Ouchi, Kentaro Nagai
  • X-ray imaging apparatus, X-ray imaging method, and X-ray imaging program
    Patent number: 8537966
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: September 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • Analysis method, radiation imaging apparatus using analysis method, and analysis program for executing analysis method
    Patent number: 8520799
    Abstract: An analysis method for use in a radiation imaging apparatus employing intensity information of interference fringes of radiation rays that have passed through a detected object includes the steps of generating first phase information of the detected object wrapped into a range of 2? from the intensity information of the interference fringes; generating information on an absorption intensity gradient of the detected object from the intensity information of the interference fringes; generating a weighting function on the basis of an absolute value of a gradient in the information on the absorption intensity gradient; and generating second phase information by unwrapping the first phase information by using the weighting function.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: August 27, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kentaro Nagai, Toru Den
  • IMAGING APPARATUS USING TALBOT INTERFERENCE AND ADJUSTING METHOD FOR IMAGING APPARATUS
    Publication number: 20130181130
    Abstract: An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions.
    Type: Application
    Filed: October 11, 2011
    Publication date: July 18, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hidenosuke Itoh, Kentaro Nagai
  • IMAGING APPARATUS
    Publication number: 20130163717
    Abstract: An imaging apparatus includes a light source unit; a diffraction grating diffracting light from the light source unit; and a detector detecting light from the diffraction grating, wherein the light source unit includes first light-emitting parts emitting light forming a first interference pattern by being diffracted at the diffraction grating, and second light-emitting parts emitting light forming a second interference pattern by being diffracted at the diffraction grating, wherein the first and the second light-emitting parts are disposed so that at least part of the first and second interference pattern overlap and the positions of light regions in the first interference pattern differ from the positions of light regions in the second interference pattern, and wherein a combined pattern is formed by the first interference pattern and the second interference pattern.
    Type: Application
    Filed: August 23, 2011
    Publication date: June 27, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kentaro Nagai
  • On-board interior illumination unit
    Patent number: 8419245
    Abstract: There is provided an on-board interior illumination unit which is so strong as to withstand vibration, high temperatures and low temperatures, and tensile load, to thereby be superior in contact reliability and which can be made small in size.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: April 16, 2013
    Assignee: Yazaki Corporation
    Inventors: Kentaro Nagai, Ryohei Ochiai
  • X-ray imaging apparatus, X-ray imaging method, and X-ray imaging program
    Patent number: 8340243
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • ANALYZING METHOD OF PHASE INFORMATION, ANALYZING PROGRAM OF THE PHASE INFORMATION, STORAGE MEDIUM, AND X-RAY IMAGING APPARATUS
    Publication number: 20120294420
    Abstract: An analyzing method for deriving phase information by analyzing a periodic pattern of moiré comprises steps of: subjecting at least a part of the periodic pattern of moiré to a windowed Fourier transform by a window function; calculating analytically, based on the moiré subjected to the windowed Fourier transform, information of a first spectrum carrying the phase information, and information of a second spectrum superimposed on the information of the first spectrum; and separating the information of the first spectrum from the information of the second spectrum, to derive the phase information.
    Type: Application
    Filed: January 21, 2011
    Publication date: November 22, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kentaro Nagai
  • IMAGING APPARATUS AND IMAGING METHOD
    Publication number: 20120188556
    Abstract: An imaging apparatus includes a diffraction grating configured to produce an interference pattern by diffracting diverging light from a light source, an absorption grating configured to block part of the interference pattern, a detector configured to detect light transmitted through the absorption grating, and a moving unit configured to move the diffraction grating and the absorption grating. The moving unit causes relative movement of the interference pattern and the absorption grating by moving the diffraction grating and the absorption grating such that the diffraction grating and the absorption grating are not moved relative to each other.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 26, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kentaro Nagai
  • DIAGNOSTIC MECHANISM
    Publication number: 20120080104
    Abstract: A diagnostic mechanism includes: a flow rate control part configured to control an opening degree of a flow rate control valve provided in a flow passage so that a measurement flow rate value outputted from a flow rate sensor becomes a target flow rate value; an inspection value output part configured to output an inspection value related to a time integral of the measurement flow rate value in a diagnostic period which is defined in correspondence with a part of a period from a time point of closing the flow passage upstream of the flow rate sensor to a time point of expiration of a state that the measurement flow rate value and the target flow rate value are substantially nearly equal; and a diagnosing part configured to compare the inspection value and a predetermined specified value to diagnose whether an abnormality relating to the flow rate sensor is present.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 5, 2012
    Applicant: HORIBA STEC, CO., LTD.
    Inventors: Yuji Yamaguchi, Masao Yamaguchi, Kentaro Nagai, Toshiyuki Himi
  • X-RAY IMAGING APPARATUS, X-RAY IMAGING METHOD, AND X-RAY IMAGING PROGRAM
    Publication number: 20110280368
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 17, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • LIGHTING SYSTEM FOR INSTALLATION IN CEILING PORTION OF PASSENGER COMPARTMENT
    Publication number: 20110273868
    Abstract: A lighting system for installation in a ceiling portion of a passenger compartment which can realize a lighting system made to a specification including a glasses holder or a sensor by employing one type of common case. The lighting system includes a case 10 in which a first unit installation opening 11 which accommodates detachably a lamp unit 20 and a second unit installation opening 12 which accommodates detachably selection units 30, 40, and the selection units 30, 40 are installed in the second unit installation opening 12 which are selected arbitrarily from a plurality of selection units US whose applications are different.
    Type: Application
    Filed: December 3, 2009
    Publication date: November 10, 2011
    Applicant: YAZAKI CORPORATION
    Inventors: Kentaro Nagai, Yoshihito Masuko
  • ON-BOARD INTERIOR ILLUMINATION UNIT
    Publication number: 20110222306
    Abstract: There is provided an on-board interior illumination unit which is so strong as to withstand vibration, high temperatures and low temperatures, and tensile load, to thereby be superior in contact reliability and which can be made small in size.
    Type: Application
    Filed: November 26, 2009
    Publication date: September 15, 2011
    Applicant: YAZAKI CORPORATION
    Inventors: Kentaro Nagai, Ryohei Ochiai
  • X-ray imaging apparatus, X-ray imaging method, and X-ray imaging program
    Patent number: 8009797
    Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 30, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
  • IMAGING APPARATUS AND IMAGING METHOD
    Publication number: 20110200168
    Abstract: An imaging apparatus analyzes a periodic pattern of a Moiré due to Talbot interference by the Fourier transform method and forms an image. The imaging apparatus includes a first grating having a structure that transmits light beams from a beam source to refract or diffract the light beams and forms a self image based on a first periodic pattern by the Talbot interference at a predetermined position; a second grating that absorbs part of the first periodic pattern and causes a Moiré to be generated based on a second periodic pattern when the second grating is arranged at a position at which the self image is formed. All cross sections of the Moiré with axes in differential directions of a wavefront for the analysis by the Fourier transform method have a two-dimensional periodic structure in which periods of patterns in the second periodic pattern are the same.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 18, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Chidane Ouchi, Kentaro Nagai
  • ANALYSIS METHOD, RADIATION IMAGING APPARATUS USING ANALYSIS METHOD, AND ANALYSIS PROGRAM FOR EXECUTING ANALYSIS METHOD
    Publication number: 20110158493
    Abstract: An analysis method for use in a radiation imaging apparatus employing intensity information of interference fringes of radiation rays that have passed through a detected object includes the steps of generating first phase information of the detected object wrapped into a range of 2? from the intensity information of the interference fringes; generating information on an absorption intensity gradient of the detected object from the intensity information of the interference fringes; generating a weighting function on the basis of an absolute value of a gradient in the information on the absorption intensity gradient; and generating second phase information by unwrapping the first phase information by using the weighting function.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 30, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kentaro Nagai, Toru Den
  • Electrical assembly and method of transporting the same
    Patent number: 7896531
    Abstract: Providing an electrical assembly, which can protect electric components provided at the electrical assembly from damage, and minimize output amount of recycle material and waste material, a functional module as the electric assembly includes a lamp and a switch as the electric components. The lamp extends from a center area of a bottom wall of a housing so as to slant toward an outside of the housing according to going apart from the bottom wall. The switch extends vertically from one end of the bottom wall. Ends of the lamp and the switch far from the bottom wall project out of the housing. When the functional modules are transported to an assembling line, the pair of functional modules is stacked on each other so as to arrange the lamp face to each other in parallel, and fixed to each other.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: March 1, 2011
    Assignee: Yazaki Corporation
    Inventors: Kentaro Nagai, Yoshinori Hirayama, Shinji Yamada
  • Vehicular room illuminating lamp
    Patent number: 7880390
    Abstract: A vehicular room illuminating lamp includes: a plurality of illumination units applying voltages through courtesy wires thereof to lamps which irradiate positions in a vehicle cabin, the positions corresponding to four doors; a mode switch capable of selecting an all-lights-on mode, a door mode and a light-off mode; and a controller that individually receives a mode selection signal of the mode switch and respective door open/close signals of the four doors. The controller applies the voltages to all of the courtesy wires in the all-lights-on mode, applies the voltage only to the courtesy wire of the illumination unit corresponding to the door indicated to be open by the door open/close signal in the door mode, and does not apply the voltage to any of the courtesy wires irrespective of states of the door open/close signals in the light-off mode.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: February 1, 2011
    Assignee: Yazaki Corporation
    Inventors: Kentaro Nagai, Yusuke Nakayama