-
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.
-
公开(公告)号：US20210068651A1
公开(公告)日：2021-03-11
申请号：US17013695
申请日：2020-09-07
Applicant: University of Tsukuba , TOPCON CORPORATION
Inventor： Yoshiaki YASUNO , Shuichi MAKITA , Tatsuo YAMAGUCHI , Toshihiro MINO
Abstract: In a scanning imaging apparatus of some aspect examples, a scanner applies an optical scan to a sample to acquire data. A scan controller controls the scanner to sequentially apply, to the sample, pattern scans according to a two-dimensional pattern including cycles. A movement unit relatively moves a scan area corresponding to the two-dimensional pattern and the sample. A movement controller controls the movement unit such that cycles in first and second scans of the pattern scans cross each other. An image constructing unit constructs an image based on data acquired under controls performed by the scan controller and the movement controller. The scan controller and the movement controller perform controls of the scanner and the movement unit respectively such that first and second cycles in a pattern scan cross each other at least at one point.
-
公开(公告)号：US20200205659A1
公开(公告)日：2020-07-02
申请号：US16718223
申请日：2019-12-18
Applicant: TOPCON CORPORATION
Inventor： Ryoichi HIROSE , Tatsuo YAMAGUCHI
Abstract: An ophthalmologic apparatus includes an acquisition unit and a controller. The acquisition unit includes an optical scanner capable of deflecting light in a predetermined deflection angle range. The acquisition unit is configured to acquire data of a subject's eye by performing A-scan on the subject's eye using optical coherence tomography by measurement light deflected by the optical scanner. The controller is configured to cause the acquisition unit to perform A-scan based on a deflection operation state of the optical scanner.
-
公开(公告)号：US20170055831A1
公开(公告)日：2017-03-02
申请号：US15202963
申请日：2016-07-06
Applicant: TOPCON CORPORATION
Inventor： Akemi MIWA , Tatsuo YAMAGUCHI , Makoto SAIKA
CPC classification number: A61B3/14 , A61B3/1015 , A61B3/1025 , A61B3/12 , A61B3/1225 , G02B6/06 , G02B21/0028 , G02B21/0056 , G02B21/0064
Abstract: According to one embodiment, a fundus imaging apparatus includes a light source, an optical scanner, an optical fiber, a light guide system, a photodetector unit, and an image forming unit. The optical scanner scans the fundus of a subject's eye with light from the light source. The optical fiber includes a plurality of optical waveguides. The light guide system guides the light returning from the fundus to the entrance end of the optical fiber. The photodetector unit detects light output from each of at least three regions at the exit end of the optical fiber. The image forming unit forms a first image based on a detection result of light output from a first region of the at least three regions, and a second image based on detection results of light output from two or more regions of the at least three regions other than the first region.
Abstract translation: 根据一个实施例，眼底成像装置包括光源，光学扫描器，光纤，导光系统，光电检测器单元和图像形成单元。 光学扫描仪用来自光源的光扫描被检者的眼睛的眼底。 光纤包括多个光波导。 光导系统将从眼底返回的光引导到光纤的入口端。 光检测器单元检测在光纤的出口端处的至少三个区域中的每一个的光输出。 图像形成单元基于从至少三个区域的第一区域输出的光的检测结果形成第一图像，并且基于从至少三个区域的两个或更多个区域输出的光的检测结果，形成第二图像 比第一个地区。
-
5.发明公开公开(公告)号：US20240041323A1
公开(公告)日：2024-02-08
申请号：US17882600
申请日：2022-08-08
Applicant: Topcon Corporation
Inventor： Tatsuo YAMAGUCHI , Ryo BANDO
CPC classification number: A61B3/14 , A61B3/0008 , A61B3/0025 , G06T7/0014 , G06T2207/30041
Abstract: An ophthalmic apparatus according to an embodiment includes an illumination system configured to project illumination light onto a subject's eye, and a photography system configured to perform photography of the subject's eye. The illumination system and the photography system are configured to satisfy a Scheimpflug condition. The illumination system includes a light source unit configured to output slit illumination light, and an illumination polarizer configured to extract an illumination polarization component from the slit illumination light. The illumination system is further configured to project the illumination polarization component onto the subject's eye. The photography system includes a photography polarizer configured to extract a photography polarization component from return light from the subject's eye with the slit illumination light projected, and an image sensor configured to detect the photography polarization component.
-
Patent Agency Ranking
公开(公告)号：US20220142468A1
公开(公告)日：2022-05-12
申请号：US17580643
申请日：2022-01-21
Applicant: Topcon Corporation
Inventor： Ryoichi HIROSE , Tatsuo YAMAGUCHI
Abstract: An ophthalmological information processing apparatus includes an acquisition unit and an image correcting unit. The acquisition unit is configured to acquire a front image depicting a predetermined site of a subject's eye in multiple gradations and an OCT image of the subject's eye. The image correcting unit is configured to correct a pixel value in a region including a first position of the predetermined site in the OCT image based on a pixel value at a second position corresponding to the first position in the front image.
-
公开(公告)号：US20210196116A1
公开(公告)日：2021-07-01
申请号：US17198299
申请日：2021-03-11
Applicant: Topcon Corporation
Inventor： Tatsuo YAMAGUCHI , Ryoichi HIROSE
Abstract: In an ophthalmic imaging apparatus of some aspect examples, a data acquiring unit acquires data by applying an OCT scan to an eye. An image constructing unit constructs an image from the data acquired. A focal position changing unit is provided to the measurement arm. A scan controller controls the data acquiring unit according to a scan pattern including first and second partial patterns that are continuous patterns for central and peripheral regions of an OCT scan application area, respectively. A focus controller controls the focal position changing unit such that a first focal position is applied in parallel with an OCT scan of at least part of the first partial pattern and a second focal position is applied in parallel with an OCT scan to at least part of the second partial pattern.
-
公开(公告)号：US20200205653A1
公开(公告)日：2020-07-02
申请号：US16716508
申请日：2019-12-17
Applicant: TOPCON CORPORATION
Inventor： Ryoichi HIROSE , Tatsuo YAMAGUCHI
Abstract: An ophthalmologic apparatus includes a data acquisition unit, a storage unit, and a correction unit. The data acquisition unit includes a concave mirror and an optical scanner configured to deflect light from a light source to guide to a reflective surface of the concave mirror. The data acquisition unit is configured to acquire a first data set group in an A-scan direction by performing optical coherence tomography on a subject's eye placed at a subject's eye position or a conjugate position of the subject's eye position using light reflected by the reflective surface. The storage unit is configured to store correction data for correcting an incident angle of the light at the subject's eye position depending on a deflection angle of the light by the optical scanner. The correction unit is configured to generate a second data set group by correcting at least a part of the first data set group based on the correction data stored in the storage unit.
-
公开(公告)号：US20240350003A1
公开(公告)日：2024-10-24
申请号：US18761532
申请日：2024-07-02
Applicant: Topcon Corporation
Inventor： Ryoichi HIROSE , Toshihiro MINO , Tatsuo YAMAGUCHI
Abstract: The ophthalmic imaging apparatus of an embodiment example performs motion contrast imaging by applying OCT scanning to an eye. The data acquiring unit 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 constructs a motion contrast image from the plurality of pieces of time-course data acquired. The controller 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.
-
公开(公告)号：US20220409040A1
公开(公告)日：2022-12-29
申请号：US17901877
申请日：2022-09-02
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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.02 seconds)
