Patents by Inventor Tomoyuki Ikegami

Tomoyuki Ikegami 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: 10709329
    Abstract: Provided is an image pickup apparatus including a light beam projecting unit projecting a light beam onto an eye to be inspected, an image signal acquiring unit acquiring an image signal based on the light beam reflected by the eye, a scanning unit included in the light beam projecting unit and scanning the eye with the light beam, an image generating unit generating an image based on the acquired image signal, a position information generating unit arranged outside an optical path of projecting the light beam onto the eye by the light beam projecting unit, a control unit causing the scanning unit to scan the position information generating unit with the light beam, and a correcting unit correcting timing of acquiring the image signal by the image signal acquiring unit based on position information acquired from the light beam with which the position information generating unit is scanned.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: July 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Sakagawa, Yuki Shimozato, Tomoyuki Ikegami
  • Patent number: 10537243
    Abstract: Provided is an image generating apparatus including: an acquisition unit configured to acquire tomographic data on an object to be inspected, the tomographic data being obtained by performing optical coherence tomography imaging of the object to be inspected through use of measurement light; an eccentric amount acquisition unit configured to acquire an eccentric amount of an optical axis of the measurement light with respect to the object to be inspected; and a generation unit configured to generate a tomographic image through use of the acquired tomographic data. The generation unit includes: a calculation unit configured to calculate, through use of the eccentric amount, an incident angle variation of the measurement light entering the object to be inspected, and an optical path length variation of the measurement light; and a correction unit configured to correct the tomographic data through use of the incident angle variation and the optical path length variation.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoyuki Ikegami
  • Patent number: 10354385
    Abstract: An Optical Coherence Tomography (OCT) data processing apparatus includes an acquisition unit configured to acquire three dimensional (3-D) OCT data of an object to be inspected, a generation unit configured to generate a motion contrast image based on the 3-D OCT data, and a detection unit configured to detect a inner surface coordinate of a vessel wall based on position information of an edge of a vessel region in the motion contrast image.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
  • Publication number: 20180350076
    Abstract: An Optical Coherence Tomography (OCT) data processing apparatus includes an acquisition unit configured to acquire three dimensional (3-D) OCT data of an object to be inspected, a generation unit configured to generate a motion contrast image based on the 3-D OCT data, and a detection unit configured to detect a inner surface coordinate of a vessel wall based on position information of an edge of a vessel region in the motion contrast image.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 6, 2018
    Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
  • Publication number: 20180289257
    Abstract: Provided is an image generating apparatus including: an acquisition unit configured to acquire tomographic data on an object to be inspected, the tomographic data being obtained by performing optical coherence tomography imaging of the object to be inspected through use of measurement light; an eccentric amount acquisition unit configured to acquire an eccentric amount of an optical axis of the measurement light with respect to the object to be inspected; and a generation unit configured to generate a tomographic image through use of the acquired tomographic data. The generation unit includes: a calculation unit configured to calculate, through use of the eccentric amount, an incident angle variation of the measurement light entering the object to be inspected, and an optical path length variation of the measurement light; and a correction unit configured to correct the tomographic data through use of the incident angle variation and the optical path length variation.
    Type: Application
    Filed: April 3, 2018
    Publication date: October 11, 2018
    Inventor: Tomoyuki Ikegami
  • Patent number: 10007989
    Abstract: To acquire information relating to a vessel wall thickness by: acquiring interference signal sets of a plurality of frames including interference signal sets corresponding to a plurality of frames forming an image of the same cross section of an fundus; generating 3-D tomographic image data on the fundus from the interference signal sets of the plurality of frames; generating 3-D motion contrast data in the fundus from the interference signal sets corresponding to the plurality of frames that form the same cross section; extracting a vessel from the fundus based on the 3-D tomographic image data or the 3-D motion contrast data; detecting a coordinate of an outer surface of a vessel wall of the vessel based on the 3-D tomographic image data; and detecting a coordinate of an inner surface of the vessel wall of the vessel based on the 3-D motion contrast data.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: June 26, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
  • Publication number: 20170262988
    Abstract: To acquire information relating to a vessel wall thickness by: acquiring interference signal sets of a plurality of frames including interference signal sets corresponding to a plurality of frames forming an image of the same cross section of an fundus; generating 3-D tomographic image data on the fundus from the interference signal sets of the plurality of frames; generating 3-D motion contrast data in the fundus from the interference signal sets corresponding to the plurality of frames that form the same cross section; extracting a vessel from the fundus based on the 3-D tomographic image data or the 3-D motion contrast data; detecting a coordinate of an outer surface of a vessel wall of the vessel based on the 3-D tomographic image data; and detecting a coordinate of an inner surface of the vessel wall of the vessel based on the 3-D motion contrast data.
    Type: Application
    Filed: February 24, 2017
    Publication date: September 14, 2017
    Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
  • Publication number: 20170027443
    Abstract: Provided is an image pickup apparatus including a light beam projecting unit projecting a light beam onto an eye to be inspected, an image signal acquiring unit acquiring an image signal based on the light beam reflected by the eye, a scanning unit included in the light beam projecting unit and scanning the eye with the light beam, an image generating unit generating an image based on the acquired image signal, a position information generating unit arranged outside an optical path of projecting the light beam onto the eye by the light beam projecting unit, a control unit causing the scanning unit to scan the position information generating unit with the light beam, and a correcting unit correcting timing of acquiring the image signal by the image signal acquiring unit based on position information acquired from the light beam with which the position information generating unit is scanned.
    Type: Application
    Filed: July 25, 2016
    Publication date: February 2, 2017
    Inventors: Wataru Sakagawa, Yuki Shimozato, Tomoyuki Ikegami
  • Patent number: 9089290
    Abstract: An ophthalmologic apparatus includes a projection unit configured to project a light flux to a subject's eye, an imaging optical system configured to form an image of the light flux reflected by the subject's eye or an image of the subject's eye on an imaging plane, an imaging unit provided on the imaging plane of the imaging optical system, a determination unit configured to determine a parameter regarding the imaging unit or the projection unit for acquiring unique information of the subject's eye based on a physical property of the subject's eye, and an acquisition unit configured to acquire the unique information based on the image of the light flux or the image of the subject's eye captured by the imaging unit with use of the determined parameter.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: July 28, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuaki Umekawa, Tomoyuki Ikegami
  • Publication number: 20150055091
    Abstract: An optical tomographic imaging apparatus acquires tomographic images of an object to be examined; where the images are based on multiplexed reference light and return light returned from the object irradiated by measurement light via a scanning unit. The apparatus includes a splitting unit to split light irradiated from a light source into the measurement light and the reference light, and a focusing unit disposed on the optical path of the measurement light between the splitting unit and scanning unit. A primary magnification of the optical system on the optical path of the measurement light or the observation light path, and a numerical aperture of the light source irradiating the measurement light, are configured such that a maximum inclination of light rays included in the light flux of the measurement light is maintained within ±2 degrees of inclination with respect to the optical axis of the optical path.
    Type: Application
    Filed: August 19, 2014
    Publication date: February 26, 2015
    Inventor: Tomoyuki Ikegami
  • Patent number: 8931901
    Abstract: An ophthalmologic apparatus includes a projection optical system configured to project a light flux on a subject's eye, a beam splitting member configured to form a split optical path corresponding to a light flux from a subject's eye, and an image-forming optical system configured to receive via the beam splitting member a light flux from the subject's eye, the image-forming optical system including an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: January 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoyuki Ikegami
  • Publication number: 20140111766
    Abstract: An ophthalmologic apparatus includes a projection unit configured to project a light flux to a subject's eye, an imaging optical system configured to form an image of the light flux reflected by the subject's eye or an image of the subject's eye on an imaging plane, an imaging unit provided on the imaging plane of the imaging optical system, a determination unit configured to determine a parameter regarding the imaging unit or the projection unit for acquiring unique information of the subject's eye based on a physical property of the subject's eye, and an acquisition unit configured to acquire the unique information based on the image of the light flux or the image of the subject's eye captured by the imaging unit with use of the determined parameter.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 24, 2014
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kazuaki Umekawa, Tomoyuki Ikegami
  • Publication number: 20140111772
    Abstract: An ophthalmologic apparatus includes a projection optical system configured to project a light flux on a subject's eye, a beam splitting member configured to form a split optical path corresponding to a light flux from a subject's eye, and an image-forming optical system configured to receive via the beam splitting member a light flux from the subject's eye, the image-forming optical system including an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tomoyuki Ikegami
  • Patent number: 8564191
    Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: October 22, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura
  • Publication number: 20110304265
    Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 15, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura