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公开(公告)号：US20230309819A1
公开(公告)日：2023-10-05
申请号：US18127280
申请日：2023-03-28
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Makoto SAIKA , Takafumi YUKIMORI
CPC classification number: A61B3/032 , A61B3/0075 , A61B3/18
Abstract: An ophthalmologic apparatus includes an optotype presentation mechanism that presents an optotype to a left subject eye and a right subject eye, and is capable of changing a brightness difference between the optotype presented to the left subject eye and the optotype presented to the right subject eye, a convergence adjustment mechanism configured to adjust a convergence distance, an eye information obtaining portion configured to obtain eye information on the left subject eye and the right subject eye, and a controller configured to control the optotype presentation mechanism, the convergence adjustment mechanism, and the eye information obtaining portion, wherein the controller sets the convergence distance to a distance different from a optotype presentation distance, gradually increases a brightness difference, and detects a visual line direction of the left subject eye and a visual line direction of the right subject eye based on the eye information.
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公开(公告)号：US20230309814A1
公开(公告)日：2023-10-05
申请号：US18126445
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/0091 , A61B3/0058 , A61B3/1035
Abstract: An ophthalmologic apparatus includes an objective measurement optical system that is configured to objectively measure eye characteristics of a subject eye; an optotype projection system that is configured to present a fixation target to the subject eye at a predetermined presentation position and apply fog to the subject eye; and a controller that is configured to control the objective measurement optical system and optotype projection system. The controller is further configured to objectively measure the eye characteristics over time by changing a presentation position of the fixation target from the predetermined presentation position in a direction to increase an amount of fog and presenting the fixation target.
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公开(公告)号：US20190082955A1
公开(公告)日：2019-03-21
申请号：US16129839
申请日：2018-09-13
Applicant: TOPCON CORPORATION
Inventor： Makoto SAIKA
Abstract: An ophthalmologic apparatus includes an optical scanner, an interference optical system that splits light from a light source into measurement light and reference light, projects the measurement light onto a subject's eye via the optical scanner, and detects interference light generated from returning light of the measurement light from the subject's eye and the reference light, a controller that controls the optical scanner so as to perform scan by the measurement light in an intersecting direction which intersects a traveling direction of the measurement light, and an analyzer that specifies a scan length based on a detection result of the interference light corresponding to the scan, the detection result being acquired by the interference optical system, the scan length being a length of a scan range in the intersecting direction within a characteristic region in an anterior segment of the subject's eye, and specifies a movement amount of the subject's eye based on a reference value of the characteristic region and the scan length.
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公开(公告)号：US20250107708A1
公开(公告)日：2025-04-03
申请号：US18896568
申请日：2024-09-25
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO , Manabu SAKAIHARA
Abstract: An ophthalmologic apparatus includes a visual-target presenting portion that is configured to present visual targets to left and right subject eyes, respectively; and an objective measurement optical system that is configured to objectively measure eye characteristics of the left and right subject eyes, respectively. The visual-target presenting portion is configured to present the visual targets while changing a convergence position, where two lines of sight from positions of the left and right subject eyes intersect, with pinhole plates respectively disposed at positions conjugate with pupils of the left and right subject eyes. The objective measurement optical system is configured to obtain the objective refractive values of the left and right subject eyes, respectively, under a condition where the pinhole plates are respectively disposed by the visual-target presenting portion and the visual targets presented at the convergence position are binocularly fused.
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公开(公告)号：US20230309828A1
公开(公告)日：2023-10-05
申请号：US18126446
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/18 , A61B3/032 , A61B3/103 , A61B3/0058
Abstract: An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.
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Patent Agency Ranking
公开(公告)号：US20210038071A1
公开(公告)日：2021-02-11
申请号：US16935217
申请日：2020-07-22
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Tatsuo YAMAGUCHI , Makoto SAIKA
Abstract: An ophthalmic apparatus of an aspect example applies optical coherence tomography (OCT) to an eye, and includes an interferometer, an OCT data generating unit, an optical path length changing unit, and a processing unit. The interferometer includes a measurement arm and a reference arm. The OCT data generating unit is configured to generate OCT data based on an output from the interferometer. The optical path length changing unit is configured to change at least one of the optical path length of the measurement arm and the optical path length of the reference arm. The processing unit is configured to control the optical path length changing unit to place partial data of the OCT data corresponding to a predetermined part of the eye at a standard depth level. The standard depth level is set based on a predetermined ocular parameter value.
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17.发明申请公开(公告)号：US20190094106A1
公开(公告)日：2019-03-28
申请号：US16139101
申请日：2018-09-24
Applicant: TOPCON CORPORATION
Inventor： Makoto SAIKA
Abstract: A lens characteristic evaluation device includes: a scanning optical system configured to scan a surface of a test lens with a linear luminous flux; a Hartmann plate provided on a side opposite to the scanning optical system with respect to the test lens and having a plurality of two-dimensionally arranged pinholes, the Hartmann plate being configured to transmit the linear luminous flux which has passed through the test lens and radiated on the pinholes by the scanning performed by the scanning optical system; a screen on which the linear luminous flux having passed through the Hartmann plate is projected; and a photographing optical system provided on a side opposite to the Hartmann plate with respect to the screen and configured to photograph the screen while the scanning with the linear luminous flux is being performed by the scanning optical system.
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公开(公告)号：US20240108213A1
公开(公告)日：2024-04-04
申请号：US18371059
申请日：2023-09-21
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Yoko TATARA , Makoto SAIKA
CPC classification number: A61B3/0091 , A61B3/103
Abstract: An ophthalmologic apparatus includes a target projection system that presents an eye chart to a subject eye, an objective measurement optical system that objectively measures an eye characteristic of the subject eye, and a control portion that controls the target projection system and the objective measurement optical system, wherein the control portion presents the target for a predetermined time at a predetermined presentation position with the target projection system, and objectively measures the eye characteristic with the objective measurement optical system in a time series to control an operation of each portion based on a measurement result of the objective measurement.
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公开(公告)号：US20240099579A1
公开(公告)日：2024-03-28
申请号：US18370952
申请日：2023-09-21
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Yoko TATARA , Makoto SAIKA
CPC classification number: A61B3/117 , A61B3/085 , A61B3/14 , A61B3/0041
Abstract: An ophthalmic apparatus includes an image acquisition unit configured to acquire an anterior segment image of a subject eye, an optotype projection system configured to present an optotype to the subject eye in at least two presentation positions different from each other, and a line-of-sight direction detection unit configured to extract a feature point from the anterior segment image that has been acquired by the image acquisition unit when the optotype has been presented in each of the at least two presentation positions, detect positional information on the anterior segment image of the feature point that has been extracted, and detect a line-of-sight direction of the subject eye on a basis of the positional information.
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公开(公告)号：US20220151486A1
公开(公告)日：2022-05-19
申请号：US17665586
申请日：2022-02-06
Applicant: Topcon Corporation
Inventor： Yoko TATARA , Suguru MIYAGAWA , Tatsuo YAMAGUCHI , Makoto SAIKA
Abstract: The ophthalmologic device to be coupled to a correcting device for correcting subject eyes, the correcting device including a right-left pair of two examination windows and a right-left pair of arrangement mechanisms that each arrange first optical elements, includes: a coupling member configured to be detachably coupled to each of coupled members provided on a side surface of the correcting device on a side opposite to an eyepiece side for each subject eye; a second optical element arranged at a position facing a second examination window opposite to a first examination window which is an eyepiece window, when the coupling member is coupled to the coupled member, the second optical element configured to branch a second optical path from a first optical path along the optical axes; and an objective measuring system arranged on the second optical path and configured to acquire ocular characteristics of each subject eye.
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