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121.发明申请公开(公告)号：US20210003383A1
公开(公告)日：2021-01-07
申请号：US16917922
申请日：2020-07-01
Applicant: TOPCON CORPORATION
Inventor： Hisashi TSUKADA , Atsushi KUBOTA , Yasufumi FUKUMA
Abstract: An OCT imaging method of some exemplary aspects includes acquiring a first three dimensional data set by applying an OCT scan targeting a first three dimensional region of a sample, creating a first two dimensional map based on representative intensity values respectively of a plurality of pieces of A-scan data included in the first three dimensional data set, designating a second three dimensional region of the sample based on the first two dimensional map, acquiring a second three dimensional data set by applying an OCT scan targeting the second three dimensional region, and generating image data from at least part of the second three dimensional data set.
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122.发明授权公开(公告)号：US10881295B2
公开(公告)日：2021-01-05
申请号：US16046244
申请日：2018-07-26
Applicant: TOPCON CORPORATION
Inventor： Hisashi Tsukada , Yasufumi Fukuma
Abstract: An ophthalmic system of an embodiment includes a slit lamp microscope and an information processing apparatus. The slit lamp microscope includes an image acquisition device that acquires a three dimensional image by photographing a subject's eye, and a first communication device that transmits the three dimensional image to the information processing apparatus. The information processing apparatus includes a second communication device that receives the three dimensional image transmitted by the first communication device, a display controller that displays a first image based on the three dimensional image on a display device, a partial region designation processor that designates a partial region of the first image, and a rendering processor that renders the three dimensional image based on the partial region to construct a second image. The display controller displays the second image on the display device.
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公开(公告)号：US10881294B2
公开(公告)日：2021-01-05
申请号：US16132507
申请日：2018-09-17
Applicant: TOPCON CORPORATION
Inventor： Kouta Fujii , Makoto Saika , Jun Sakai
Abstract: An ophthalmic apparatus of an embodiment include a data acquisition device, distribution data generator, correction value calculator, magnification corrector, and data comparator. The data acquisition device acquires three dimensional data by applying OCT to the fundus of a subject's eye. The distribution data generator generates distribution data of a predetermined measurement value in the fundus based on the three dimensional data. The correction value calculator calculates a magnification correction value based on a predetermined condition for acquiring the three dimensional data. The magnification corrector changes at least one of the size of standard distribution data generated in advance for the predetermined measurement value and the size of the distribution data, based on the magnification correction value. The data comparator compares the distribution data with the standard distribution data, at least one of whose sizes has been changed by the magnification corrector.
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公开(公告)号：US20200337552A1
公开(公告)日：2020-10-29
申请号：US16845928
申请日：2020-04-10
Applicant: Topcon Corporation
Inventor： Zhenguo WANG , Zaixing MAO , Hideharu SUZUKI , Kazuhiro OOMORI , Makoto FUJINO
Abstract: An ophthalmologic apparatus includes: an ophthalmologic apparatus body having: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light emitted from a first illumination light source along an optical axis overlapping an optical axis center of the objective lens; an interference image capturing camera that takes an image of a corneal reflection light through the objective lens and outputs an imaging signal; and a calculation unit that calculates, based on a corneal reflection image, of a corneal reflection light, input from the interference image capturing camera, a thickness of a tear fluid film at each position on the corneal surface; and a guide rail that supports the ophthalmologic apparatus body. The guide rail supports the ophthalmologic apparatus body in a rotatable manner such that an optical axis center of the objective lens is positioned obliquely with respect to a horizontal direction orthogonal to a gravity direction.
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公开(公告)号：US20200337551A1
公开(公告)日：2020-10-29
申请号：US16845747
申请日：2020-04-10
Applicant: Topcon Corporation
Inventor： Zhenguo WANG , Zaixing MAO , Kazuhiro OOMORI , Makoto FUJINO
Abstract: An ophthalmologic apparatus includes: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light; and a corneal measurement optical system having an imaging element that takes an image of a corneal reflection light, which is a reflection of the illumination light, through the objective lens, and outputs an imaging signal. The corneal measurement optical system includes a first mirror arranged near the objective lens and a second mirror arranged near the imaging element. The first and second mirrors and are configured such that the corneal reflection light that enters and is reflected from the first mirror, and then enters and is reflected from the second mirror exits toward an incident side from which the corneal reflection light enters a reflection surface of the first mirror.
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Patent Agency Ranking
126.发明授权公开(公告)号：US10810699B2
公开(公告)日：2020-10-20
申请号：US15905887
申请日：2018-02-27
Applicant: TOPCON CORPORATION
Inventor： Takahiro Komeichi , Naoki Morikawa
Abstract: Working efficiency in position matching of multiple point cloud data displayed on a display is improved. A point cloud data processing device includes a highlight controlling part. In a condition in which a first point cloud containing multiple markers for position matching and a second point cloud containing multiple markers for position matching are displayed on a display, when a marker of one of the first point cloud and the second point cloud is specified, the highlight controlling part highlights a corresponding marker of the other point cloud.
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公开(公告)号：US10800344B2
公开(公告)日：2020-10-13
申请号：US15808976
申请日：2017-11-10
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: An aerial photogrammetric device comprises an aerial vehicle configured to fly autonomously or remotely controlled, an image pickup device provided on the aerial vehicle and having an optical axis extending in a vertical direction, an attitude detecting device for detecting a tilt angle and a tilting direction with respect to a horizontality or a verticality of the optical axis, a position measuring device, and a control device for controlling a flight of the aerial vehicle, wherein the control device is configured to acquire images at two points by the image pickup device, acquire image acquiring positions at a time of image acquisition from the position measuring device, acquire a detection result of the attitude detecting device at the time of image acquisition, correct the images acquired at the two points into horizontal images based on the detection result, and perform a relative orientation of the obtained horizontal images.
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公开(公告)号：US10786153B2
公开(公告)日：2020-09-29
申请号：US16080019
申请日：2017-01-06
Applicant: TOPCON CORPORATION
Inventor： Atsushi Kubota
Abstract: An ophthalmologic imaging apparatus of an embodiment includes a data acquisition device, photographing device, a controller, and an error detector. The data acquisition device acquires data by scanning a subject's eye using optical coherence tomography. The photographing device photographs the subject's eye to obtain a front image. The controller controls the data acquisition device to perform a series of scans along a preset path group. The error detector detects an error based on a series of data acquired by the series of scans and two or more front images that include one or more front images obtained by photographing device corresponding to the series of scans.
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公开(公告)号：US10732267B2
公开(公告)日：2020-08-04
申请号：US15634254
申请日：2017-06-27
Applicant: TOPCON Corporation
Inventor： Akinobu Sugiura , Masahiro Ohishi
IPC: G01S7/4913 , G01S7/497 , G01S17/10 , G01S7/481 , G01S17/32
Abstract: An electro-optical distance meter comprises a light source for emitting a distance measuring light, a distance measuring optical system for leading a distance measuring light to a photodetector, an internal reference optical system for leading a part of the distance measuring light as an internal reference light to the photodetector, and an arithmetic processing unit for performing a distance measurement based on light receiving results of the distance measuring light and the internal reference light, wherein the internal reference optical system comprises a condenser lens, a scattering plate for scattering the internal reference light and for forming a secondary light source, and an optical fiber for leading the internal reference light to the photodetector and the internal reference optical system is constituted in such a manner that a light component of the internal reference light emitted from an arbitrary point within a whole surface of the secondary light source enters the optical fiber.
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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.
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