Patents by Inventor Ryoichi Hirose

Ryoichi Hirose 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: 11213202
    Abstract: An ophthalmologic apparatus includes an SLO system, a projection system, a first image former, a second image former, a displacement processor, and a controller. The SLO system is configured to scan a target eye with first light deflected by an first optical scanner. The projection system is configured to project second light deflected by an second optical scanner onto the target eye. The first image former is configured to form a first image of the target eye based on a scan result of a first scan region using the first optical scanner. The second image former is configured to form a second image of the target eye based on a scan result of a second scan region using the first optical scanner, the second scan region being narrower than the first scan region. The displacement processor is configured to calculate a displacement between a partial image in the first image and the second image, the partial image corresponding to the second image.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: January 4, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Masahiro Shibutani, Tatsuo Yamaguchi, Toshihiro Mino, Ryoichi Hirose
  • Publication number: 20210204809
    Abstract: The ophthalmic imaging apparatus (1) of an embodiment example performs motion contrast imaging by applying OCT scanning to an eye (E). The data acquiring unit (2, 100) acquires a plurality of pieces of time-course data respectively corresponding to a plurality of scan points, by conducting repetitive A-scan application to individual scan points. The image constructing unit (220) constructs a motion contrast image from the plurality of pieces of time-course data acquired. The controller (211) controls the data acquiring unit such that data acquisition time intervals of first time-course data corresponding to a first scan point of the plurality of scan points and data acquisition time intervals of second time-course data corresponding to a second scan point become substantially equal to each other.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 8, 2021
    Applicant: Topcon Corporation
    Inventors: Ryoichi HIROSE, Toshihiro MINO, Tatsuo YAMAGUCHI
  • Publication number: 20210196116
    Abstract: In an ophthalmic imaging apparatus of some aspect examples, a data acquiring unit acquires data by applying an OCT scan to an eye. An image constructing unit constructs an image from the data acquired. A focal position changing unit is provided to the measurement arm. A scan controller controls the data acquiring unit according to a scan pattern including first and second partial patterns that are continuous patterns for central and peripheral regions of an OCT scan application area, respectively. A focus controller controls the focal position changing unit such that a first focal position is applied in parallel with an OCT scan of at least part of the first partial pattern and a second focal position is applied in parallel with an OCT scan to at least part of the second partial pattern.
    Type: Application
    Filed: March 11, 2021
    Publication date: July 1, 2021
    Applicant: Topcon Corporation
    Inventors: Tatsuo YAMAGUCHI, Ryoichi HIROSE
  • Publication number: 20210073988
    Abstract: An ophthalmologic information processing apparatus analyzes an image of a subject's eye formed by arranging a plurality of A-scan images acquired by performing OCT scan on inside the subject's eye with measurement light deflected around a scan center position. The ophthalmologic information processing apparatus includes a correcting unit, a region specifying unit, and a direction specifying unit. The correcting unit is configured to transform a pixel position in the image into a transformation position along a traveling direction of the measurement light passing through the scan center position. The region specifying unit is configured to specify a predetermined layer region by analyzing the image in which the pixel position has been transformed by the correcting unit. The direction specifying unit is configured to specify a normal direction of the layer region specified by the region specifying unit.
    Type: Application
    Filed: November 17, 2020
    Publication date: March 11, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI, Suguru MIYAGAWA
  • Patent number: 10932664
    Abstract: An ophthalmic device that comprises a first objective lens system, an optical system, an anterior eye segment photographing system, and a first optical-path combining member. The first objective lens system includes two or more lenses. The optical system includes a projection system configured to project light onto a target eye via the first objective lens system. The anterior eye segment photographing system is used for photographing an anterior eye segment of the target eye. The first optical-path combining member is located between the two or more lenses to combine an optical path of the optical system and an optical path of the anterior eye segment photographing system.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 2, 2021
    Assignee: TOPCON CORPORATION
    Inventors: Ryoichi Hirose, Ikuo Ishinabe, Tatsuo Yamaguchi
  • Publication number: 20210038068
    Abstract: An ophthalmologic information processing apparatus corrects an image of a subject's eye formed by arranging a plurality of A-scan images acquired by scanning inside the subject's eye with measurement light deflected around a scan center position. The ophthalmologic information processing apparatus includes a specifying unit and a transforming unit. The specifying unit is configured to specify a transformation position along a traveling direction of the measurement light passing through the scan center position, the transformation position corresponding to a pixel position in the image. The transforming unit is configured to transform the pixel position into the transformation position.
    Type: Application
    Filed: October 29, 2020
    Publication date: February 11, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI
  • Publication number: 20200397282
    Abstract: An ophthalmologic apparatus includes an fixation projection system, an interference optical system, and a controller. The fixation projection system is configured to project fixation light flux onto a fundus of a subject's eye. The interference optical system includes an optical scanner and is configured to split light from light source into measurement light and reference light, to irradiate the subject' eye with the measurement light deflected by the optical scanner, and to detect interference light between returning light of the measurement light from the subject's eye and the reference light. The controller is configured to perform OCT measurement on a first scan region and a second scan region, which are different from each other in the subject's eye, by controlling the interference optical system in a state where a projected position of the fixation light flux on the fundus is fixed.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 24, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Manabu SAKAIHARA, Tatsuo YAMAGUCHI
  • Publication number: 20200288966
    Abstract: An ophthalmologic apparatus includes an optical scanner, an interference optical system, an intraocular distance calculator, an image correcting unit, and a controller. The optical scanner is disposed at an optically substantially conjugate position with a first site of a subject's eye. The interference optical system is configured to split light from a light source into reference light and measurement light, to project the measurement light onto the subject's eye via the optical scanner, and to detect interference light between returning light of the light from the subject's eye and the reference light via the optical scanner. The image forming unit is configured to form a tomographic image of the subject's eye corresponding a first traveling direction of the measurement light deflected by the optical scanner, based on a detection result of the interference light.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Tatsuo YAMAGUCHI, Ryoichi HIROSE, Michiko NAKANISHI
  • Publication number: 20200245862
    Abstract: A new technique is provided to easily grasp the form of the fundus and the like of the eye to be examined being depicted in a tomographic image. An ophthalmic information processing device includes an image rotation circuit and a display control circuit. The image rotation circuit rotates a tomographic image of the eye to be examined acquired by using optical coherence tomography while making a measurement optical axis be eccentric relative to a predetermined site of the eye to be examined, in accordance with an eccentric amount and an eccentric direction of the measurement optical axis relative to the predetermined site. The display control circuit causes a display device to display the tomographic image rotated by the image rotation circuit.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 6, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI
  • Publication number: 20200214557
    Abstract: An ophthalmologic apparatus, includes: a first concave mirror and a second concave mirror having a concave surface-shaped first reflective surface and a concave surface-shaped second reflective surface; an SLO optical system configured to project light from an SLO light source onto a subject's eye via the first concave mirror and the second concave mirror, and to detect returning light from the subject's eye; a first optical scanner configured to deflect the light from the SLO light source to guide the light to the first reflective surface; a second optical scanner configured to deflect light reflected by the first reflective surface to guide the light to the second reflective surface; an OCT optical system including a third optical scanner, and configured to split light from an OCT light source into measurement light and reference light, to project the measurement light deflected by the third optical scanner onto the subject's eye, and to detect interference light between returning light of the measurement l
    Type: Application
    Filed: December 31, 2019
    Publication date: July 9, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI
  • Publication number: 20200205653
    Abstract: An ophthalmologic apparatus includes a data acquisition unit, a storage unit, and a correction unit. The data acquisition unit includes a concave mirror and an optical scanner configured to deflect light from a light source to guide to a reflective surface of the concave mirror. The data acquisition unit is configured to acquire a first data set group in an A-scan direction by performing optical coherence tomography on a subject's eye placed at a subject's eye position or a conjugate position of the subject's eye position using light reflected by the reflective surface. The storage unit is configured to store correction data for correcting an incident angle of the light at the subject's eye position depending on a deflection angle of the light by the optical scanner. The correction unit is configured to generate a second data set group by correcting at least a part of the first data set group based on the correction data stored in the storage unit.
    Type: Application
    Filed: December 17, 2019
    Publication date: July 2, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI
  • Publication number: 20200205659
    Abstract: An ophthalmologic apparatus includes an acquisition unit and a controller. The acquisition unit includes an optical scanner capable of deflecting light in a predetermined deflection angle range. The acquisition unit is configured to acquire data of a subject's eye by performing A-scan on the subject's eye using optical coherence tomography by measurement light deflected by the optical scanner. The controller is configured to cause the acquisition unit to perform A-scan based on a deflection operation state of the optical scanner.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 2, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Tatsuo YAMAGUCHI
  • Patent number: 10667684
    Abstract: An optical coherence tomography (OCT) apparatus according to an embodiment is configured to split light from a light source into measurement light and reference light, project the measurement light on an object, and detect interference light generated from the reference light and the measurement light returning from the object. The OCT apparatus includes a dispersion unit and an information generation unit. The dispersion unit is configured to relatively change a dispersion characteristic of a measurement optical path which is an optical path of the measurement light and a dispersion characteristic of a reference optical path which is an optical path of the reference light, according to an operation mode corresponding to a depth range. The information generation unit is configured to generate information on the object according to the operation mode, based on a detection result of the interference light.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: June 2, 2020
    Assignee: TOPCON CORPORATION
    Inventors: Masahiro Shibutani, Ryoichi Hirose, Toshihiro Mino
  • Publication number: 20200107722
    Abstract: An ophthalmic device that comprises a first objective lens system, an optical system, an anterior eye segment photographing system, and a first optical-path combining member. The first objective lens system includes two or more lenses. The optical system includes a projection system configured to project light onto a target eye via the first objective lens system. The anterior eye segment photographing system is used for photographing an anterior eye segment of the target eye. The first optical-path combining member is located between the two or more lenses to combine an optical path of the optical system and an optical path of the anterior eye segment photographing system.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Ikuo ISHINABE, Tatsuo YAMAGUCHI
  • Publication number: 20200093364
    Abstract: An ophthalmic imaging apparatus of an exemplary aspect includes a data acquisition device, image constructing circuitry, and composing circuitry. The data acquisition device is configured to sequentially apply optical coherence tomography (OCT) scans to a plurality of regions different from each other of a fundus of a subject's eye in order and under a condition according to a fundus shape, to acquire a plurality of pieces of data corresponding to the plurality of regions. The image constructing circuitry is configured to construct an image from each of the plurality of pieces of data. The composing circuitry is configured to construct a composite image of a plurality of images constructed from the plurality of pieces of data by the image constructing circuitry.
    Type: Application
    Filed: August 19, 2019
    Publication date: March 26, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Toshihiro MINO, Tatsuo YAMAGUCHI
  • Publication number: 20200015675
    Abstract: An ophthalmologic apparatus includes an SLO system, a projection system, a first image former, a second image former, a displacement processor, and a controller. The SLO system is configured to scan a target eye with first light deflected by an first optical scanner. The projection system is configured to project second light deflected by an second optical scanner onto the target eye. The first image former is configured to form a first image of the target eye based on a scan result of a first scan region using the first optical scanner. The second image former is configured to form a second image of the target eye based on a scan result of a second scan region using the first optical scanner, the second scan region being narrower than the first scan region. The displacement processor is configured to calculate a displacement between a partial image in the first image and the second image, the partial image corresponding to the second image.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: TOPCON CORPORATION
    Inventors: Masahiro SHIBUTANI, Tatsuo YAMAGUCHI, Toshihiro MINO, Ryoichi HIROSE
  • Publication number: 20190000316
    Abstract: An ophthalmic device that comprises a first objective lens system, an optical system, an anterior eye segment photographing system, and a first optical-path combining member. The first objective lens system includes two or more lenses. The optical system includes a projection system configured to project light onto a target eye via the first objective lens system. The anterior eye segment photographing system is used for photographing an anterior eye segment of the target eye.
    Type: Application
    Filed: July 29, 2016
    Publication date: January 3, 2019
    Applicant: TOPCON CORPORATION
    Inventors: Ryoichi HIROSE, Ikuo ISHINABE, Tatsuo YAMAGUCHI
  • Publication number: 20180084991
    Abstract: An optical coherence tomography (OCT) apparatus according to an embodiment is configured to split light from a light source into measurement light and reference light, project the measurement light on an object, and detect interference light generated from the reference light and the measurement light returning from the object. The OCT apparatus includes a dispersion unit and an information generation unit. The dispersion unit is configured to relatively change a dispersion characteristic of a measurement optical path which is an optical path of the measurement light and a dispersion characteristic of a reference optical path which is an optical path of the reference light, according to an operation mode corresponding to a depth range. The information generation unit is configured to generate information on the object according to the operation mode, based on a detection result of the interference light.
    Type: Application
    Filed: August 7, 2017
    Publication date: March 29, 2018
    Applicant: TOPCON CORPORATION
    Inventors: Masahiro SHIBUTANI, Ryoichi HIROSE, Toshihiro MINO
  • Patent number: 4490171
    Abstract: A method for injecting a pulverized fuel into a blast furnace uses a pulverulent fuel injecting burner which is protruded into a blow pipe through a wall thereof near the tuyere of a blast furnace. The burner injects a pulverized fuel into the blast furnace along with a hot blast of air at a temperature higher than 950.degree. C. flowing through the blow pipe. The tip end of the burner is located at a distance L between 100 and 350 mm upstream from the boundary between the tuyere of the blast furnace and the blow pipe. According to one embodiment, the tip of the furnace is tapered by an angle .theta..ltoreq.1400L.sup.2 -1290L+295. According to a second embodiment, the inner diameter B.sub.1 of the blow pipe, and the inner and outer diameters of the burner tip (d and D) are selected such that 0.1.ltoreq.(D/Bi).ltoreq.0.25 and 0.6.ltoreq.(d/D).ltoreq.0.8. According to a third embodiment, the burner tip is removable.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: December 25, 1984
    Assignee: Kobe Steel, Limited
    Inventors: Tomio Suzuki, Setsuo Tamura, Kozo Tanaka, Ryoichi Hirose, Hiroyuki Komatsu, Shinichi Tamada, Taketsugu Kasai, Keisuke Tanimoto