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).
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Patent number: 10709329Abstract: 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: GrantFiled: July 25, 2016Date of Patent: July 14, 2020Assignee: Canon Kabushiki KaishaInventors: Wataru Sakagawa, Yuki Shimozato, Tomoyuki Ikegami
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Patent number: 10537243Abstract: 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: GrantFiled: April 3, 2018Date of Patent: January 21, 2020Assignee: Canon Kabushiki KaishaInventor: Tomoyuki Ikegami
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Patent number: 10354385Abstract: 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: GrantFiled: June 5, 2018Date of Patent: July 16, 2019Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ikegami, Tomoyuki Makihira
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Publication number: 20180350076Abstract: 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: ApplicationFiled: June 5, 2018Publication date: December 6, 2018Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
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Publication number: 20180289257Abstract: 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: ApplicationFiled: April 3, 2018Publication date: October 11, 2018Inventor: Tomoyuki Ikegami
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Patent number: 10007989Abstract: 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: GrantFiled: February 24, 2017Date of Patent: June 26, 2018Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ikegami, Tomoyuki Makihira
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Publication number: 20170262988Abstract: 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: ApplicationFiled: February 24, 2017Publication date: September 14, 2017Inventors: Tomoyuki Ikegami, Tomoyuki Makihira
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Publication number: 20170027443Abstract: 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: ApplicationFiled: July 25, 2016Publication date: February 2, 2017Inventors: Wataru Sakagawa, Yuki Shimozato, Tomoyuki Ikegami
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Patent number: 9089290Abstract: 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: GrantFiled: October 16, 2013Date of Patent: July 28, 2015Assignee: Canon Kabushiki KaishaInventors: Kazuaki Umekawa, Tomoyuki Ikegami
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Publication number: 20150055091Abstract: 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: ApplicationFiled: August 19, 2014Publication date: February 26, 2015Inventor: Tomoyuki Ikegami
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Patent number: 8931901Abstract: 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: GrantFiled: October 16, 2013Date of Patent: January 13, 2015Assignee: Canon Kabushiki KaishaInventor: Tomoyuki Ikegami
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Publication number: 20140111766Abstract: 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: ApplicationFiled: October 16, 2013Publication date: April 24, 2014Applicant: Canon Kabushiki KaishaInventors: Kazuaki Umekawa, Tomoyuki Ikegami
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Publication number: 20140111772Abstract: 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: ApplicationFiled: October 16, 2013Publication date: April 24, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Tomoyuki Ikegami
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Patent number: 8564191Abstract: 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: GrantFiled: June 3, 2011Date of Patent: October 22, 2013Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura
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Publication number: 20110304265Abstract: 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: ApplicationFiled: June 3, 2011Publication date: December 15, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura