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公开(公告)号：US20210204809A1
公开(公告)日：2021-07-08
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：US20210038068A1
公开(公告)日：2021-02-11
申请号：US17083312
申请日：2020-10-29
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：US20200015675A1
公开(公告)日：2020-01-16
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：US20190099076A1
公开(公告)日：2019-04-04
申请号：US16085595
申请日：2017-02-20
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Masakazu HIROTA , Kohji NISHIDA , Makoto SAIKA , Tatsuo YAMAGUCHI , Suguru MIYAGAWA
Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.
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公开(公告)号：US20220273170A1
公开(公告)日：2022-09-01
申请号：US17683379
申请日：2022-03-01
Applicant: University of Tsukuba , Topcon Corporation
Inventor： Yoshiaki YASUNO , Shuichi MAKITA , Tatsuo YAMAGUCHI , Shinnosuke AZUMA
Abstract: A method of processing ophthalmic data of some embodiment examples includes preparing a data set acquired by applying optical scanning of a two-dimensional pattern to a subject's eye. The two-dimensional pattern of the optical scanning includes a series of cycles that intersects each other. The method further includes generating position history data based on the data set. The position history data represents a temporal change in a position of the subject's eye.
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Patent Agency Ranking
公开(公告)号：US20200288966A1
公开(公告)日：2020-09-17
申请号：US16885305
申请日：2020-05-28
Applicant: TOPCON CORPORATION
Inventor： Tatsuo YAMAGUCHI , Ryoichi HIROSE , Michiko NAKANISHI
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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17.发明申请公开(公告)号：US20200093364A1
公开(公告)日：2020-03-26
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：US20190000316A1
公开(公告)日：2019-01-03
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：US20240130612A1
公开(公告)日：2024-04-25
申请号：US18404926
申请日：2024-01-05
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：US20210073988A1
公开(公告)日：2021-03-11
申请号：US17099828
申请日：2020-11-17
Applicant: TOPCON CORPORATION
Inventor： Ryoichi HIROSE , Tatsuo YAMAGUCHI , Suguru MIYAGAWA
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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