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公开(公告)号：US20230290055A1
公开(公告)日：2023-09-14
申请号：US18177792
申请日：2023-03-03
Applicant: TOPCON CORPORATION
Inventor： Takeshi SASAKI , Nobuyuki FUKAYA
CPC classification number: G06T17/05 , G01C15/00 , G06T7/70 , G06T2207/10028 , G06T2210/56
Abstract: A surveying assistance system includes an information display terminal and a surveying device configured to measure a point cloud in a three-dimensional space. The surveying assistance system includes a terminal display unit configured to show a first image of a measurement site captured from a position of the information display terminal and a second image produced from information related to the measurement site, and a surveying assistance unit configured to assist measurement performed by the surveying device, by using the terminal display unit.
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公开(公告)号：US20230280161A1
公开(公告)日：2023-09-07
申请号：US18115431
申请日：2023-02-28
Applicant: TOPCON CORPORATION
Inventor： Taichi Yuasa
IPC: G01C15/00
CPC classification number: G01C15/006
Abstract: Provided is a surveying instrument including a distance measuring light projecting module configured to project a distance measuring light to as object, a distance measuring light receiving module having a photodetector configured to receive a reflected distance measuring light 45 from the object, and an arithmetic control module configured to control the distance measuring light projecting module and calculate a distance to the object based on a light reception result of the reflected distance measuring light with respect to the photodetector, in which the distance measuring light projecting module has a pinhole plate which is insertable or removable with respect to an optical axis of the distance measuring light, a pinhole having a predetermined diameter is formed in the pinhole plate, and a light amount and a spread angle of the distance measuring light are changeable based on the insertion or removable of the pinhole plate.
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33.发明公开公开(公告)号：US20230272632A1
公开(公告)日：2023-08-31
申请号：US18005420
申请日：2021-07-09
Applicant: TOPCON CORPORATION
Inventor： Yoshihiro NISHI , Kohei SATO , Motohiro MIYAJIMA
CPC classification number: E04G21/1833 , G01C15/004
Abstract: A method uses a surveying system 1 including a surveying device 200 and a terminal device 100 communicative with the surveying device 200, and includes: acquiring an altitude of a benchmark serving as a reference height on a batter board; acquiring a first altitude difference between the benchmark and a current ground line; acquiring a second altitude difference between the current ground line and a beam top position on the batter board stake; acquiring an altitude of a stake top of a batter board stake installed, by measuring the altitude of the stake top; calculating a third altitude difference between the stake top of the batter board stake and the beam top position based on the altitude of the benchmark, the first and second altitude differences, and the altitude of the stake top; and displaying the third altitude difference on a screen unit of the terminal device.
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公开(公告)号：US20230262336A1
公开(公告)日：2023-08-17
申请号：US18165354
申请日：2023-02-07
Applicant: TOPCON CORPORATION
Inventor： You SASAKI
IPC: H04N23/698 , G01S17/89 , G01S7/481 , G01S17/86
CPC classification number: H04N23/698 , G01S17/89 , G01S7/4817 , G01S17/86
Abstract: Efficiency of a technique for performing laser scanning and photography simultaneously is improved. A laser scanning apparatus includes a horizontally rotatable horizontal rotation unit, a rotation controller, and a processor or circuitry. The horizontal rotation unit includes cameras and a vertical rotation unit that performs laser scanning in an upper-lower direction. The rotation controller controls rotation of the horizontal rotation unit. The processor or circuitry performs a process of not selecting some pieces of laser scanning data that is obtained by laser scanning in the upper-lower direction. Laser scanning and photography that uses the cameras are performed while the horizontal rotation unit is horizontally rotated. The rotation of the horizontal rotation unit is decelerated in performing photography. The processor or circuitry does not select some pieces of laser scanning data that are obtained by laser scanning in the upper-lower direction during the deceleration.
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公开(公告)号：US11717150B2
公开(公告)日：2023-08-08
申请号：US16885305
申请日：2020-05-28
Applicant: TOPCON CORPORATION
Inventor： Tatsuo Yamaguchi , Ryoichi Hirose , Michiko Nakanishi
CPC classification number: A61B3/0025 , A61B3/102 , A61B3/1005 , A61B3/1225
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.
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Patent Agency Ranking
公开(公告)号：US20230236293A1
公开(公告)日：2023-07-27
申请号：US18155780
申请日：2023-01-18
Applicant: TOPCON CORPORATION
Inventor： You SASAKI
CPC classification number: G01S7/4817 , G01S17/10
Abstract: Laser scanning is performed along a transverse section of a tunnel while the amount of scanning is reduced as much as possible. A laser scanning apparatus includes a horizontal rotation unit, a vertical rotation unit disposed on the horizontal rotation unit, and an optical unit disposed on the vertical rotation unit and configured to emit and receive laser scanning light. A method includes obtaining laser scanning data of right and left wall surfaces of a tunnel, calculating a straight line that connects the right and left wall surfaces and that crosses a perpendicular line passing a position at which the laser scanning apparatus is set up, and calculating a direction orthogonal to the straight line in a horizontal plane, and performing laser scanning of a transverse section of the tunnel while the vertical rotation unit is rotated around a rotation axis in the calculated direction.
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公开(公告)号：US20230233079A1
公开(公告)日：2023-07-27
申请号：US18190032
申请日：2023-03-24
Applicant: TOPCON CORPORATION
Inventor： Shingo UENO , Ryousuke ITO
Abstract: An ophthalmologic apparatus includes: a head unit having an optical system capable of receiving light reflected from a subject's eye; a drive mechanism that movably holds the head unit; an alignment detection unit that detects a position of the subject's eye relative to the head unit; and a control unit that controls the drive mechanism. The drive mechanism includes at least two arms rotatably connected together, at least two first rotation support mechanisms and at least three second rotation support mechanisms which allow the head unit to move, and at least five driving units for driving the rotation support mechanisms. The control unit is capable of controlling the driving units using a measurement result of the alignment measuring unit to align the head unit and the subject's eye with each other.
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公开(公告)号：US11704791B2
公开(公告)日：2023-07-18
申请号：US16552467
申请日：2019-08-27
Applicant: Topcon Corporation
Inventor： Qi Yang , Bisrat Zerihun , Charles A. Reisman
IPC: G06K9/00 , A61B3/02 , G06T7/00 , G06N3/08 , A61B3/10 , G06N20/20 , A61B5/00 , A61B3/12 , G06N3/045
CPC classification number: G06T7/0012 , A61B3/102 , G06N3/08 , G06N20/20 , A61B3/12 , A61B5/7275 , G06N3/045 , G06T2207/30041
Abstract: Machine learning technologies are used to identify and separating abnormal and normal subjects and identifying possible disease types with images (e.g., optical coherence tomography (OCT) images of the eye), where the machine learning technologies are trained with only normative data. In one example, a feature or a physiological structure of an image is extracted, and the image is classified based on the extracted feature. In another example, a region of the image is masked and then reconstructed, and a similarity is determined between the reconstructed region and the original region of the image. A label (indicating an abnormality) and a score (indicating a severity) can be determined based on the classification and/or the similarity.
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公开(公告)号：US20230218167A1
公开(公告)日：2023-07-13
申请号：US18086649
申请日：2022-12-22
Applicant: Topcon Corporation
Inventor： Yoko HIROHARA
CPC classification number: A61B3/18 , A61B3/102 , A61B3/0075 , A61B3/145 , A61B3/107 , A61B3/103 , A61B3/1035
Abstract: An ophthalmic apparatus includes an objective lens arranged to be passed through by first and second measurement optical axes that are positioned at a distance from each other. An OCT optical system performs OCT on a subject's left eye arranged on the first measurement optical axis or a subject's right eye arranged on the second measurement optical axis. An optical axis adjusting unit adjusts an optical axis of the OCT optical system under control of a controller so that the optical axis approximately coincides with any one of the first measurement optical axis and the second measurement optical axis. An intraocular parameter calculator calculates an intraocular parameter of the subject's left or right eye based on a detection result of interference light acquired in a state where the optical axis of the OCT optical system approximately coincides with the first or second measurement optical axis.
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公开(公告)号：US20230218161A1
公开(公告)日：2023-07-13
申请号：US18091382
申请日：2022-12-30
Applicant: Topcon Corporation
Inventor： Yoko HIROHARA
CPC classification number: A61B3/102 , A61B3/0091
Abstract: An ophthalmic apparatus includes an objective lens, and an OCT optical system optical system is configured to project a measurement light onto a subject's left or right eye via an objective lens, and to detect interference light between returning light of the measurement light a reference light having traveled through a reference optical path. An optical axis switching member switches an optical axis of the OCT optical system to approximately coincide with a first or second measurement optical axis. A controller is configured to control the optical axis switching member. An intraocular parameter calculator calculates an intraocular parameter of the subject's left or right eye based on a detection result of the interference light acquired in a state where the optical axis of the OCT optical system is switched so that the optical axis of the OCT optical system approximately coincides with the first or second measurement optical axis.
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