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公开(公告)号：US20250072745A1
公开(公告)日：2025-03-06
申请号：US18820109
申请日：2024-08-29
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO
Abstract: An ophthalmic examination apparatus includes a visual target projection system including a visual target presentation portion that presents a fixed visual target to left and right subject eyes, an objective measurement optical system that objectively measures eye characteristics of the left and right subject eyes, and a controller that controls each portion of the apparatus, wherein the fixed visual target is a visual target for the left eye and a visual target for the right eye that are to be respectively projected to the left and right subject eyes and have a same drawing pattern in positions where up and down direction positions to visual target flames are the same.
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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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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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14.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：US20250072744A1
公开(公告)日：2025-03-06
申请号：US18820069
申请日：2024-08-29
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO
Abstract: An ophthalmic examination apparatus includes a visual target projection system that includes a visual target presentation portion that presents a fixed visual target to left and right subject eyes, an objective measurement optical system that objectively measures eye characteristics of the left and right subject eyes, and a controller that controls each portion of the apparatus, wherein the controller measures the eye characteristics of the left and right subject eyes with the objective measurement optical system and acquires an objective refraction value as objective measurement information when fusion is attempted with left and right subject eyes with respect to a change in the convergence distance.
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Patent Agency Ranking
公开(公告)号：US20250057410A1
公开(公告)日：2025-02-20
申请号：US18804483
申请日：2024-08-14
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO , Manabu SAKAIHARA
Abstract: An ophthalmologic apparatus includes a visual target presenting portion that presents fixation targets to subject eyes; an objective measurement optical system that objectively measures eye characteristics of the subject eyes; and a controller. Each of the fixation targets includes fusion targets depicted in a manner that allows binocular fusion while the subject eyes respectively view the fixation targets. The visual target presenting portion presents the fixation targets while changing an examination distance from the subject eyes to the fixation target when an anisometropia is induced. In the anisometropia, one subject eye is in a fully corrected condition and the other subject eye is corrected by a predetermined degree from the fully corrected condition. The controller controls the objective measurement optical system to measure the eye characteristics while the subject eyes binocularly view the fixation targets and acquire refractive values of the subject eyes as objective measurement information.
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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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公开(公告)号：US20200085293A1
公开(公告)日：2020-03-19
申请号：US16691882
申请日：2019-11-22
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko HIROHARA , Makoto SAIKA , Suguru MIYAGAWA
Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.
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