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公开(公告)号：US11490805B2
公开(公告)日：2022-11-08
申请号：US16777927
申请日：2020-01-31
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
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.
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12.发明授权公开(公告)号：US11311189B2
公开(公告)日：2022-04-26
申请号：US16543625
申请日：2019-08-19
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Toshihiro Mino , Tatsuo Yamaguchi
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.
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公开(公告)号：US11806077B2
公开(公告)日：2023-11-07
申请号：US17901877
申请日：2022-09-02
Applicant: TOPCON CORPORATION
Inventor： Tatsuo Yamaguchi , Ryoichi Hirose , Michiko Nakanishi
CPC classification number: A61B3/0025 , A61B3/102 , A61B3/1005 , A61B3/1225
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. The intraocular distance calculator is configured to obtain an intraocular distance between predetermined sites of the subject's eye based on the detection result of the interference light. The image correcting unit is configured to correct the tomographic image based on the intraocular distance. The controller is configured to control at least the optical scanner.
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公开(公告)号：US11684252B2
公开(公告)日：2023-06-27
申请号：US16885305
申请日：2020-05-28
Applicant: TOPCON CORPORATION
Inventor： Tatsuo Yamaguchi , Ryoichi Hirose , Michiko Nakanishi
CPC classification number: A61B3/0025 , A61B3/102 , A61B3/1005 , A61B3/1225
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. The intraocular distance calculator is configured to obtain an intraocular distance between predetermined sites of the subject's eye based on the detection result of the interference light. The image correcting unit is configured to correct the tomographic image based on the intraocular distance. The controller is configured to control at least the optical scanner.
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公开(公告)号：US11607123B2
公开(公告)日：2023-03-21
申请号：US16732410
申请日：2020-01-02
Applicant: TOPCON CORPORATION
Inventor： Tatsuo Yamaguchi , Michiko Nakanishi , Taichi Yuasa
Abstract: An ophthalmologic apparatus includes: an optical system configured to acquire data of a subject's eye; a housing unit configured to house the optical system; and an attachment member including a holding member configured to hold a face of the subject movably in a state where a peripheral site of the subject's eye is in contact with the holding member, a passing part through which an optical axis of the optical system passes being formed in the holding member, and the attachment member configured to be detachable between the housing unit and the subject's eye.
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Patent Agency Ranking
公开(公告)号：US10182721B2
公开(公告)日：2019-01-22
申请号：US15202963
申请日：2016-07-06
Applicant: TOPCON CORPORATION
Inventor： Akemi Miwa , Tatsuo Yamaguchi , Makoto Saika
Abstract: According to one embodiment, a fundus imaging apparatus includes a light source, an optical scanner, an optical fiber, a light guide system, a photodetector unit, and an image forming unit. The optical scanner scans the fundus of a subject's eye with light from the light source. The optical fiber includes a plurality of optical waveguides. The light guide system guides the light returning from the fundus to the entrance end of the optical fiber. The photodetector unit detects light output from each of at least three regions at the exit end of the optical fiber. The image forming unit forms a first image based on a detection result of light output from a first region of the at least three regions, and a second image based on detection results of light output from two or more regions of the at least three regions other than the first region.
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公开(公告)号：US12266099B2
公开(公告)日：2025-04-01
申请号：US17580643
申请日：2022-01-21
Applicant: Topcon Corporation
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
Abstract: An ophthalmological information processing apparatus includes an acquisition unit and an image correcting unit. The acquisition unit is configured to acquire a front image depicting a predetermined site of a subject's eye in multiple gradations and an OCT image of the subject's eye. The image correcting unit is configured to correct a pixel value in a region including a first position of the predetermined site in the OCT image based on a pixel value at a second position corresponding to the first position in the front image.
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公开(公告)号：US12133684B2
公开(公告)日：2024-11-05
申请号：US17211932
申请日：2021-03-25
Applicant: Topcon Corporation
Inventor： Ryoichi Hirose , Toshihiro Mino , Tatsuo Yamaguchi
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.
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公开(公告)号：US11941800B2
公开(公告)日：2024-03-26
申请号：US17099828
申请日：2020-11-17
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi , Suguru Miyagawa
CPC classification number: G06T7/0012 , A61B3/0025 , A61B3/0041 , A61B3/102 , A61B3/1225 , G06T3/20 , G06T2207/10101 , G06T2207/30041
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.
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20.发明授权公开(公告)号：US11759104B2
公开(公告)日：2023-09-19
申请号：US17013695
申请日：2020-09-07
Applicant: University of Tsukuba , TOPCON CORPORATION
Inventor： Yoshiaki Yasuno , Shuichi Makita , Tatsuo Yamaguchi , Toshihiro Mino
IPC: A61B3/00 , A61B3/10 , G01B9/02091
CPC classification number: A61B3/102 , A61B3/0025 , G01B9/02091
Abstract: In a scanning imaging apparatus of some aspect examples, a scanner applies an optical scan to a sample to acquire data. A scan controller controls the scanner to sequentially apply, to the sample, pattern scans according to a two-dimensional pattern including cycles. A movement unit relatively moves a scan area corresponding to the two-dimensional pattern and the sample. A movement controller controls the movement unit such that cycles in first and second scans of the pattern scans cross each other. An image constructing unit constructs an image based on data acquired under controls performed by the scan controller and the movement controller. The scan controller and the movement controller perform controls of the scanner and the movement unit respectively such that first and second cycles in a pattern scan cross each other at least at one point.
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