Patents by Inventor Toshiharu Sumiya

Toshiharu Sumiya 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: 10660515
    Abstract: A method of providing diagnosis information includes acquiring, from a first imaging area of an eye to be inspected, a first set of signals to create three-dimensional tomographic data, acquiring, from a second imaging area including at least a part of the first imaging area, a second set of signals to create three-dimensional motion contrast data, generating a first display image of the eye to be inspected using the first set of signals, generating a second display image using the second set of signals, and changing, when the first display image and the second display image are displayed side by side, at least one of display magnifications, lateral display positions of the eye to be inspected, a display range in the depth direction of the eye to be inspected, and viewpoints for a three-dimensional display, for the first display image and the second display image correspondingly.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: May 26, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiharu Sumiya
  • Patent number: 10478059
    Abstract: An SS-OCT apparatus includes a clock generator configured as an interferometer including an optical path through which part of light emitted from a light source passes, the optical path being split into a first optical path and a second optical path having an optical path length difference relative to the first optical path, to generate a clock used by a converter sampling an analog signal; a tomographic image obtaining unit configured to obtain a tomographic image of a fundus by using a digital signal converted from the analog signal sampled by the converter using the generated clock; and a scan unit configured to scan illumination light across the fundus at a scan angle of 47 degrees or more in air. The tomographic image obtaining unit is configured to obtain a tomographic image of the fundus at a distance of 4.0 mm more within an eyeball in a depth range.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: November 19, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taro Fukasawa, Toshiharu Sumiya
  • Patent number: 10349829
    Abstract: An ophthalmic imaging apparatus that captures a tomographic image of an subject's eye based on light obtained by combining a return light with a reference light, the return light being from the subject's eye when irradiated with a measurement light, the reference light corresponding to the measurement light includes a first optical fiber disposed in an optical path of the reference light and including a light guide portion for guiding the reference light, and a second optical fiber disposed in an optical path of the measurement light and including a light guide portion for guiding the measurement light, wherein a diameter of each of the light guide portions of ejection ends of the first optical fiber and the second optical fiber is larger than a diameter of a light guide portion in a position different from a position of each of the ejection ends.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiharu Sumiya, Yasuhisa Inao
  • Publication number: 20190008377
    Abstract: A method of providing diagnosis information includes acquiring, from a first imaging area of an eye to be inspected, a first set of signals to create three-dimensional tomographic data, acquiring, from a second imaging area including at least a part of the first imaging area, a second set of signals to create three-dimensional motion contrast data, generating a first display image of the eye to be inspected using the first set of signals, generating a second display image using the second set of signals, and changing, when the first display image and the second display image are displayed side by side, at least one of display magnifications, lateral display positions of the eye to be inspected, a display range in the depth direction of the eye to be inspected, and viewpoints for a three-dimensional display, for the first display image and the second display image correspondingly.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 10, 2019
    Inventor: Toshiharu Sumiya
  • Patent number: 10136806
    Abstract: An image display method includes acquiring a first image of a fundus within a first area of an eye to be inspected, acquiring interference signal sets corresponding to a plurality of frames, which are acquired with an intention to acquire the same cross section, for a plurality of different cross sections, generating, based on the interference signal sets corresponding to the plurality of frames, a motion contrast image of the fundus within a second area included in the first area, and superimposing, for display, information acquired from a portion of the motion contrast image of the fundus onto a corresponding position of the first image of the fundus.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiharu Sumiya
  • Patent number: 10126112
    Abstract: An object is to enable removal fixed pattern noise even if the intensity of interference light changes during measurement. An image capturing apparatus comprises a light splitting unit that splits light emitted from a light source into reference light and measurement light, an interference signal detection unit that acquires an interference signal from interference light resulting from interference of the reference light and return light generated by irradiating an object to be inspected with the measurement light, a noise signal acquisition unit that acquires a noise signal containing a noise component contained in the interference light, a correction unit that corrects the intensity of one of the interference signal and the noise signal, and a noise removal unit that removes the noise component contained in the interference signal using the interference signal and the noise signal one of which is corrected.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: November 13, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshiharu Sumiya, Makoto Fukuhara, Makoto Sato
  • Publication number: 20180310818
    Abstract: An image processing apparatus that processes a plurality of tomographic signals corresponding to light of mutually different polarization, acquired from an object using light interference, extracts candidate regions for depolarization regions of the object in a retardation image of the object, based on retardation values of the object obtained using the plurality of tomographic signals, and extracts depolarization regions of the object in an image indicating uniformity of polarized light in candidate regions, based on a value indicating uniformity of polarized light of the candidate regions, obtained using the plurality of tomographic signals of the candidate regions.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 1, 2018
    Inventors: Makoto Fukuhara, Toshiharu Sumiya
  • Publication number: 20180232914
    Abstract: An image processing apparatus includes an image generating unit configured to generate a polarization sensitive tomographic image indicating polarization characteristics of an object based on tomographic signals acquired from the object using light interference, an extracting unit configured to extract a depolarization region of the object, based on the tomographic signals, and a display control unit configured to display, on a display unit, a region on the polarization sensitive tomographic image corresponding to the depolarization region, in a state distinguishable from other regions.
    Type: Application
    Filed: October 12, 2016
    Publication date: August 16, 2018
    Inventors: Toshiharu Sumiya, Makoto Fukuhara
  • Publication number: 20180140183
    Abstract: An SS-OCT apparatus includes a clock generator configured as an interferometer including an optical path through which part of light emitted from a light source passes, the optical path being split into a first optical path and a second optical path having an optical path length difference relative to the first optical path, to generate a clock used by a converter sampling an analog signal; a tomographic image obtaining unit configured to obtain a tomographic image of a fundus by using a digital signal converted from the analog signal sampled by the converter using the generated clock; and a scan unit configured to scan illumination light across the fundus at a scan angle of 47 degrees or more in air. The tomographic image obtaining unit is configured to obtain a tomographic image of the fundus at a distance of 4.0 mm more within an eyeball in a depth range.
    Type: Application
    Filed: March 30, 2016
    Publication date: May 24, 2018
    Inventors: Taro Fukasawa, Toshiharu Sumiya
  • Publication number: 20180000341
    Abstract: A alteration caused in a nerve fiber layer could not accurately be displayed. There is provided a tomographic imaging apparatus including a generation means for generating a nerve fiber bundle map, a designation means for designating an arbitrary nerve fiber bundle in the nerve fiber bundle map, and a display control means for causing display means to display a parameter of the designated nerve fiber bundle.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 4, 2018
    Inventors: Nobuhiro Tomatsu, Yoshihiko Iwase, Makoto Sato, Toshiharu Sumiya, Makoto Fukuhara, Atsushi Goto, Mitsuro Sugita, Michael Pircher, Clemens Vass, Christoph Hitzenberger
  • Publication number: 20180003479
    Abstract: The present invention relates to accurately determining a contour of a depolarizing region. An image processing apparatus extracts a depolarizing region in a polarization-sensitive tomographic image of a subject's eye, and detects, in a tomographic intensity image of the subject's eye, a region corresponding to the extracted depolarizing region.
    Type: Application
    Filed: December 22, 2015
    Publication date: January 4, 2018
    Inventors: Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato, Yoshihiko Iwase, Isao Komine
  • Patent number: 9841268
    Abstract: An imaging apparatus configured to image an object to be examined is provided. The apparatus includes a splitting unit configured to split light obtained by combining the returned light and the reference light into a plurality of lights having different polarization components; and a detecting unit configured to detect the plurality of lights. The apparatus further includes a correcting unit configured to correct a phase difference between different polarization components generated by an optical member provided on an optical path of the measurement light or an optical path of the reference light.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: December 12, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Fukuhara, Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato
  • Publication number: 20170311795
    Abstract: An ophthalmic imaging apparatus that captures a tomographic image of an subject's eye based on light obtained by combining a return light with a reference light, the return light being from the subject's eye when irradiated with a measurement light, the reference light corresponding to the measurement light includes a first optical fiber disposed in an optical path of the reference light and including a light guide portion for guiding the reference light, and a second optical fiber disposed in an optical path of the measurement light and including a light guide portion for guiding the measurement light, wherein a diameter of each of the light guide portions of ejection ends of the first optical fiber and the second optical fiber is larger than a diameter of a light guide portion in a position different from a position of each of the ejection ends.
    Type: Application
    Filed: March 31, 2017
    Publication date: November 2, 2017
    Inventors: Toshiharu Sumiya, Yasuhisa Inao
  • Publication number: 20170209037
    Abstract: To facilitate understanding of correspondence between a motion contrast image acquired through OCTA and structure information acquired through OCT or the like, when an image is displayed, a first image within a first area of an object to be inspected is acquired, and interference signal sets corresponding to a plurality of frames, which are acquired with an intention to acquire the same cross section, are acquired for a plurality of different cross sections. Then, a motion contrast image within a second area included in the first area is generated based on the interference signal sets corresponding to the plurality of frames, and information acquired from a part of the motion contrast image is superimposed for display onto a corresponding position of the first image.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 27, 2017
    Inventor: Toshiharu Sumiya
  • Publication number: 20170074638
    Abstract: A polarization-sensitive OCT apparatus includes an interference unit configured to split light emitted from a light source into measurement light and reference light and to generate interfered light by causing returning light of the measurement light that has irradiated a subject to interfere with the reference light that has traveled through a reference arm, a splitting unit configured to split the interfered light into different polarization components, a generation unit configured to detect the polarization components split by the splitting unit and to generate a signal, detection units configured to detect respective polarization states of the measurement light in a sample arm, the returning light of the measurement light that has passed through the interference unit, and the reference light that has passed through the interference unit, and polarization control units configured to control the respective polarization states on the basis of the respective polarization states that have been detected.
    Type: Application
    Filed: February 10, 2015
    Publication date: March 16, 2017
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Makoto Fukuhara, Makoto Sato, Nobuhiro Tomatsu, Toshiharu Sumiya
  • Publication number: 20160097632
    Abstract: An object is to enable removal fixed pattern noise even if the intensity of interference light changes during measurement. An image capturing apparatus comprises a light splitting unit that splits light emitted from a light source into reference light and measurement light, an interference signal detection unit that acquires an interference signal from interference light resulting from interference of the reference light and return light generated by irradiating an object to be inspected with the measurement light, a noise signal acquisition unit that acquires a noise signal containing a noise component contained in the interference light, a correction unit that corrects the intensity of one of the interference signal and the noise signal, and a noise removal unit that removes the noise component contained in the interference signal using the interference signal and the noise signal one of which is corrected.
    Type: Application
    Filed: September 30, 2015
    Publication date: April 7, 2016
    Inventors: Toshiharu Sumiya, Makoto Fukuhara, Makoto Sato
  • Publication number: 20150369586
    Abstract: An imaging apparatus configured to image an object to be examined is provided. The apparatus includes a splitting unit configured to split light obtained by combining the returned light and the reference light into a plurality of lights having different polarization components; and a detecting unit configured to detect the plurality of lights. The apparatus further includes a correcting unit configured to correct a phase difference between different polarization components generated by an optical member provided on an optical path of the measurement light or an optical path of the reference light.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 24, 2015
    Inventors: Makoto Fukuhara, Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato
  • Patent number: 8378937
    Abstract: In an image display apparatus, each sub-pixel includes a phosphor configured to emit light of a predetermined color when the phosphor is irradiated with electrons, an electron emission device configured to irradiate the phosphor with the electrons, and a resistor connected in series to the electron emission device and having a negative temperature characteristic of resistance. In three or more sub-pixels with different luminescent colors included in each pixel, the resistor is configured such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater activation energy, or the resistor is configured such that the resistor is made of the same material for the three or more sub-pixel and such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater resistance.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: February 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Iba, Toshiharu Sumiya, Hisanobu Azuma
  • Patent number: 8084932
    Abstract: Deformation of a gate by Coulomb force generated when operating an electron-emitting device is inhibited by appropriately maintaining relationship between film thickness h of the gate and distance L from an outer surface of an insulating member to an inner surface of a concave portion. According to this, in an electron beam apparatus provided with a laminate-type electron-emitting device, the deformation of the gate is prevented to reduce variation in electron emission characteristics, thereby preventing the element from being broken.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: December 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Suwa, Hisanobu Azuma, Toshiharu Sumiya
  • Publication number: 20110309737
    Abstract: The electron-emitting device is configured such that an inclination angle ?2 of a lower portion from a height-direction intermediate portion to the lower end is larger than the inclination angle ?1 of an upper portion from a lower edge of the concave portion to a height-direction intermediate portion. And, an electric resistance of a lower cathode portion which is a portion of the lower portion of the cathode is larger than that of an upper cathode portion which is a portion of the upper portion of the cathode.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 22, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Tsutsui, Toshiharu Sumiya, Takahiro Hachisu