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公开(公告)号：US12167892B2
公开(公告)日：2024-12-17
申请号：US18404926
申请日：2024-01-05
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
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.
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公开(公告)号：US12096983B2
公开(公告)日：2024-09-24
申请号：US17198299
申请日：2021-03-11
Applicant: Topcon Corporation
Inventor： Tatsuo Yamaguchi , Ryoichi Hirose
CPC classification number: A61B3/102 , A61B3/0025 , A61B3/14 , A61B3/18
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.
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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：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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Patent Agency Ranking
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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公开(公告)号：US11298019B2
公开(公告)日：2022-04-12
申请号：US16718223
申请日：2019-12-18
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
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.
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公开(公告)号：US10932664B2
公开(公告)日：2021-03-02
申请号：US16061724
申请日：2016-07-29
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Ikuo Ishinabe , Tatsuo Yamaguchi
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.
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公开(公告)号：US11980416B2
公开(公告)日：2024-05-14
申请号：US17083312
申请日：2020-10-29
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
CPC classification number: A61B3/0025 , A61B3/1005 , A61B3/102
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.
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公开(公告)号：US11540711B2
公开(公告)日：2023-01-03
申请号：US16731229
申请日：2019-12-31
Applicant: TOPCON CORPORATION
Inventor： Ryoichi Hirose , Tatsuo Yamaguchi
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 light from the subject's eye and the reference light; an optical path coupling member disposed between the first optical scanner and the first concave mirror, and combining an optical path of the SLO optical system and an optical path of the OCT optical system; and a correction unit configured to correct detection result of the interference light detected by the OCT optical system or an image formed based on the detection result.
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