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公开(公告)号：US11213202B2
公开(公告)日：2022-01-04
申请号：US16583319
申请日：2019-09-26
Applicant: TOPCON CORPORATION
Inventor： Masahiro Shibutani , Tatsuo Yamaguchi , Toshihiro Mino , Ryoichi Hirose
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. The controller is configured to control the second optical scanner based on the displacement.
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公开(公告)号：US11980419B2
公开(公告)日：2024-05-14
申请号：US16925346
申请日：2020-07-10
Applicant: TOPCON CORPORATION
Inventor： Jun Sakai , Toshihiro Mino
CPC classification number: A61B3/102 , A61B3/0025 , A61B3/1233
Abstract: An exemplary OCT apparatus includes a scanner, controller, phase information generator, phase information processor. The scanner applies an OCT scan to an object using an optical scanner. The controller controls the scanner to perform a first scan that scans a cross section of the object in a first scan direction and a second scan that scans a cross section of the object in a second scan direction opposite to the first scan direction. The phase information generator generates first phase information based on first acquisition data acquired by the first scan and second phase information based on second acquisition data acquired by the second scan. The phase information processor generates composite phase information based on the first phase information and the second phase information.
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公开(公告)号：US11974806B2
公开(公告)日：2024-05-07
申请号：US17179416
申请日：2021-02-19
Applicant: TOPCON CORPORATION
Inventor： Toshihiro Mino
CPC classification number: A61B3/0025 , A61B3/102 , G06T5/70 , G06T7/55 , G06T2207/10101 , G06T2207/30041
Abstract: An ophthalmologic information processing apparatus according to the embodiments include a generator, an extractor, and a phase correction unit. The generator is configured to generate a phase difference profile by performing averaging processing in a depth direction on phase differences obtained by calculating for each depth position of A-lines between two adjacent B-frames of complex OCT data of a subject's eye. The extractor is configured to a phase drift from the phase difference profile generated by the generator. The phase correction unit is configured to correct a phase of first complex OCT data of any one of the two B-frames based on the phase drift extracted by the extractor.
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公开(公告)号：US11925411B2
公开(公告)日：2024-03-12
申请号：US17179413
申请日：2021-02-19
Applicant: TOPCON CORPORATION
Inventor： Toshihiro Mino , Yoshikiyo Moriguchi , Akiko Ishikawa
CPC classification number: A61B3/0025 , A61B3/0041 , A61B3/102 , A61B3/103 , G06T5/005 , G06T7/0012 , G06T2207/10101 , G06T2207/30041 , G06T2207/30168
Abstract: An ophthalmologic information processing apparatus according to the embodiments includes a search unit, a correction unit, and a display control unit. The search unit is configured to search for filter information for correcting an aberration in complex OCT data of a subject's eye so that a quality of the complex OCT data becomes a predetermined level. The correction unit is configured to correct the aberration in the complex OCT data based on the filter information searched by the search unit. The display control unit is configured to display, on a display means, aberration information on a pupil surface of the subject's eye corresponding to the filter information searched by the search unit.
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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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Patent Agency Ranking
公开(公告)号：US10667684B2
公开(公告)日：2020-06-02
申请号：US15670234
申请日：2017-08-07
Applicant: TOPCON CORPORATION
Inventor： Masahiro Shibutani , Ryoichi Hirose , Toshihiro Mino
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.
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公开(公告)号：US11972544B2
公开(公告)日：2024-04-30
申请号：US17318233
申请日：2021-05-12
Applicant: TOPCON CORPORATION
Inventor： Song Mei , Toshihiro Mino , Dawei Li , Zaixing Mao , Zhenguo Wang , Kinpui Chan
CPC classification number: G06T5/50 , A61B5/0066 , A61B5/0261 , A61B5/489 , A61B5/7267 , A61B5/742 , G01B9/02041 , G01B9/02091 , G06T7/33 , G06T2200/04 , G06T2207/10101 , G06T2207/20081 , G06T2207/20221 , G06T2207/30104
Abstract: Optical coherence tomography (OCT) angiography (OCTA) data is generated by one or more machine learning systems to which OCT data is input. The OCTA data is capable of visualization in three dimensions (3D) and can be generated from a single OCT scan. Further, motion artifact can be removed or attenuated in the OCTA data by performing the OCT scans according to special scan patterns and/or capturing redundant data, and by the one or more machine learning systems.
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公开(公告)号：US11439301B2
公开(公告)日：2022-09-13
申请号：US16408483
申请日：2019-05-10
Applicant: TOPCON CORPORATION
Inventor： Toshihiro Mino , Jonathan Liu
Abstract: An ophthalmologic information processing apparatus includes an acquisition unit, a tissue specifying unit, and a specifying unit. The acquisition unit is configured to acquire a tomographic image of a subject's eye. The tissue specifying unit is configured to acquire first shape data representing shape of a tissue of the subject's eye by performing segmentation processing on each of a plurality of tomographic images acquired by the acquisition unit. The specifying unit is configured to obtain second shape data representing shape of the tissue based on the plurality of first shape data acquired by the tissue specifying unit.
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公开(公告)号：US20210358096A1
公开(公告)日：2021-11-18
申请号：US17318233
申请日：2021-05-12
Applicant: TOPCON CORPORATION
Inventor： Song Mei , Toshihiro Mino , Dawei Li , Zaixing Mao , Zhenguo Wang , Kinpui Chan
Abstract: Optical coherence tomography (OCT) angiography (OCTA) data is generated by one or more machine learning systems to which OCT data is input. The OCTA data is capable of visualization in three dimensions (3D) and can be generated from a single OCT scan. Further, motion artifact can be removed or attenuated in the OCTA data by performing the OCT scans according to special scan patterns and/or capturing redundant data, and by the one or more machine learning systems.
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公开(公告)号：US11134836B2
公开(公告)日：2021-10-05
申请号：US16412433
申请日：2019-05-15
Applicant: TOPCON CORPORATION
Inventor： Toshihiro Mino , Jonathan Liu
Abstract: An ophthalmologic information processing apparatus includes an acquisition unit, a tissue specifying unit, and a specifying unit. The acquisition unit is configured to acquire a tomographic image of a subject's eye formed based on scan data acquired using an optical system for performing optical coherence tomography on the subject's eye. The tissue specifying unit is configured to acquire first shape data representing shape of a tissue of the subject's eye by performing segmentation processing on the tomographic image. The specifying unit is configured to specify a low sensitivity component having a small variation with respect to a change in a position of the optical system with respect to the subject's eye from the first shape data, and to obtain second shape data representing shape of the tissue based on the specified low sensitivity component.
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