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1.发明公开公开(公告)号：US20230404400A1
公开(公告)日：2023-12-21
申请号：US18033815
申请日：2020-12-09
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA , Kazuhiro OOMORI , Yasufumi FUKUMA
CPC classification number: A61B3/145 , G06T7/97 , G06T7/0012 , H04N23/71 , H04N23/74 , H04N23/76 , A61B3/13 , A61B3/117 , A61B3/12 , G06T2207/30041 , G06T2207/10056
Abstract: An ophthalmic observation apparatus of an embodiment example includes a moving image generating unit, a movement mechanism, an analyzing processor, and a first controller. The moving image generating unit is configured to generate a moving image by illuminating and photographing the subject's eye. The movement mechanism is configured to move the moving image generating unit. The analyzing processor is configured to sequentially analyze a plurality of still images included in the moving image generated by the moving image generating unit being moved by the movement mechanism to sequentially detect images of a predetermined site of the subject's eye. The first controller is configured to control the movement mechanism based on a change in a predetermined image parameter of the images sequentially detected by the analyzing processor.
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公开(公告)号：US20230014194A1
公开(公告)日：2023-01-19
申请号：US17945138
申请日：2022-09-15
Applicant: Topcon Corporation
Inventor： Ryosuke SHIMOSAWA , Kazuhiro YAMADA , Masaya SUZUKI
Abstract: An ophthalmic apparatus includes an illumination optical system that generates slit-shaped illumination light using a first light source; an optical scanner that deflects the illumination light to a fundus of a subject's eye; an imaging optical system that captures light from the fundus using a rolling shutter method; an acquisition unit that acquires a fundus image of the subject's eye using light from a second light source; a flare determination unit that determines whether or not flare occurs by analyzing the fundus image; a controller that performs flare optimization control by controlling at least one of the first light source, the illumination optical system, the optical scanner, the imaging optical system, and the image sensor based on a first determination result obtained by the flare determination unit; and an image forming unit that forms an image of the fundus when the flare does not occur.
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公开(公告)号：US20220400948A1
公开(公告)日：2022-12-22
申请号：US17894175
申请日：2022-08-24
Applicant: Topcon Corporation
Inventor： Akira TAKAHASHI , Kazuhiro YAMADA
Abstract: An ophthalmic apparatus includes an illumination optical system, an optical scanner, an imaging optical system, a controller, and an image forming unit. The illumination optical system is configured to generate slit-shaped illumination light. The optical scanner is configured to deflect the illumination light to guide the illumination light to a fundus of a subject's eye. The imaging optical system is configured to guide returning light of the illumination light from the fundus to an image sensor. The controller is configured to control the optical scanner. The image forming unit is configured to form an image of the fundus based on a light receiving result captured in an imaging target region on a light receiving surface of the image sensor. The image sensor is configured to capture the light receiving result in an opening region on the light receiving surface using a rolling shutter method, the opening region corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved in a predetermined scan direction by the optical scanner. The controller is configured to control the optical scanner so that irradiation times of the returning light at a plurality of light receiving elements in the imaging target region are substantially equal.
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公开(公告)号：US20230023425A1
公开(公告)日：2023-01-26
申请号：US17959305
申请日：2022-10-04
Applicant: Topcon Corporation
Inventor： Masaya SUZUKI , Kazuhiro YAMADA , Hitoshi SHIMIZU , Masashi NAKAJIMA
Abstract: An ophthalmic apparatus includes an illumination optical system including a slit in which a slit-shaped aperture is formed and an iris aperture in which two apertures are formed at positions away from an optical axis position, the iris aperture being arranged at a position substantially conjugate optically to an iris of a subject's eye between a light source and the slit, and configured to generate slit-shaped illumination light using light from the light source and to guide the illumination light to a fundus of the subject's eye; and an imaging optical system including an imaging aperture in which an aperture is formed, and configured to guide returning light of the illumination light to an image sensor, the returning light being guided from the fundus by pupil division and passing through the aperture formed in the imaging aperture. A width of the slit-shaped aperture, a distance between the two apertures, and a size of the aperture in the imaging aperture are set so that an overlap region of a light flux region of the illumination light and a light flux region of the returning light is located on a side of the fundus from a posterior surface of lens of the subject's eye within the eye of the subject eye.
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5.发明公开公开(公告)号：US20230397810A1
公开(公告)日：2023-12-14
申请号：US18033821
申请日：2020-12-09
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA , Kazuhiro OOMORI , Yasufumi FUKUMA
CPC classification number: A61B3/13 , G06T7/0012 , G02B21/0012 , G02B21/365 , A61B3/14 , G06T2207/10056 , G06T2207/30041 , G06T2207/10016
Abstract: An ophthalmic observation apparatus according to an embodiment example includes a moving image generating unit, an analyzing processor, and a display controller. The moving image generating unit is configured to generate a moving image by photographing a subject's eye into which an artificial object has been inserted. The analyzing processor is configured to analyze a still image included in the moving image to identify a first site image corresponding to a predetermined site of the subject's eye and a second site image corresponding to a predetermined site of the artificial object. The display controller is configured to display, on a display device, the moving image, first position information that represents a position of the first site image, and second position information that represents a position of the second site image.
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Patent Agency Ranking
公开(公告)号：US20220354365A1
公开(公告)日：2022-11-10
申请号：US17872038
申请日：2022-07-25
Applicant: Topcon Corporation
Inventor： Akira TAKAHASHI , Kazuhiro YAMADA
Abstract: An ophthalmic apparatus includes a light source, an illumination optical system, an optical scanner, an imaging optical system, and a controller. The illumination optical system is configured to generate slit-shaped illumination light using light from the light source. The optical scanner is configured to deflect the illumination light to guide the illumination light to a fundus of a subject's eye. The imaging optical system is configured to guide returning light of the illumination light from the fundus to an image sensor, the image sensor capturing light receiving result of a region on a light receiving surface corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved by the optical scanner. The controller is configured to control a deflection angle of the illumination light of the optical scanner. The optical scanner is configured to output a scanner position signal corresponding to the deflection angle of the illumination light. The image sensor is configured to start capturing the light receiving result of the returning light in synchronization with the scanner position signal.
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7.发明公开公开(公告)号：US20230397811A1
公开(公告)日：2023-12-14
申请号：US18033849
申请日：2021-02-02
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA , Kazuhiro OOMORI , Yasufumi FUKUMA
Abstract: An ophthalmic observation apparatus according to an embodiment example includes a moving image generating unit, an analyzing processor, a target position determining processor, and a display controller. The moving image generating unit is configured to generate a moving image by photographing the subject's eye. The analyzing processor is configured to analyze a still image included in the moving image to detect an image of a predetermined site of the subject's eye. The target position determining processor is configured to determine a target position for a predetermined treatment based at least on the image of the predetermined site detected by the analyzing processor. The display controller is configured to display, on a display device, the moving image and target position information that represents the target position.
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公开(公告)号：US20230397809A1
公开(公告)日：2023-12-14
申请号：US18033802
申请日：2020-12-09
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA , Kazuhiro OOMORI , Yasufumi FUKUMA
Abstract: An ophthalmic observation apparatus of an embodiment includes a microscope, a processor, and a display controller. The microscope includes a pair of photography systems and is configured to acquire a pair of pieces of moving image data of a subject's eye. The processor is configured to perform first processing including at least one of a control of the microscope and image processing applied to at least one of the pair of pieces of moving image data, such that a predetermined parameter of the pair of pieces of moving image data satisfies a first condition. The display controller is configured to display a pair of moving images based on the pair of pieces of moving image data produced by the first processing on a display device.
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9.发明公开公开(公告)号：US20240074649A1
公开(公告)日：2024-03-07
申请号：US18242544
申请日：2023-09-06
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA
CPC classification number: A61B3/0008 , A61B3/12
Abstract: An ophthalmic apparatus includes an objective lens, a first illumination optical system arranged approximately coaxially with an optical axis of the objective lens and configured to be capable of irradiating first illumination light onto an eye to be examined through the objective lens, a second illumination optical system arranged so as to be eccentric to the optical axis of the objective lens and configured to be capable of irradiating second illumination light onto the eye to be examined through the objective lens, a left-eye observation optical system configured to be capable of guiding returning light from the eye to be examined, where the first illumination light or the second illumination light has entered through the objective lens, to a left-eye eyepiece or a left-eye imaging element, and a right-eye observation optical system configured to be capable of guiding returning light from the eye to be examined, where the first illumination light or the second illumination light has entered through the objective lens, to a right-eye eyepiece or a right-eye imaging element. The second illumination optical system is capable of changing an incident angle of a principal ray of the second illumination light relative to the eye to be examined.
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公开(公告)号：US20240008741A1
公开(公告)日：2024-01-11
申请号：US18033812
申请日：2020-12-09
Applicant: Topcon Corporation
Inventor： Kazuhiro YAMADA , Kazuhiro OOMORI , Yasufumi FUKUMA
CPC classification number: A61B3/14 , H04N23/67 , G06T7/0012 , A61B2090/0807
Abstract: An ophthalmic observation apparatus of an embodiment includes an illumination system, a photography system, and a focus processor. The illumination system includes a light source configured to emit illumination light and an indicator member having a plurality of indicators, and is configured to project the illumination light onto a subject's eye via the indicator member. The photography system includes an image sensor and is configured to perform photography of the subject's eye. The focus processor is configured to perform detection of a plurality of indicator images from an image acquired by the photography system, and perform a focus control of the photography system based on the plurality of indicator images.
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