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公开(公告)号：US10921430B2
公开(公告)日：2021-02-16
申请号：US15968881
申请日：2018-05-02
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Tetsuji Anai
IPC: G01S7/48 , G01S7/481 , G01C15/00 , G01S17/42 , G01S3/782 , G01S3/789 , G01S17/66 , G01S17/86 , G01S17/46 , G01C15/06
Abstract: A target instrument has an illuminating lamp, wherein a total station has an optical axis deflector capable of deflecting a distance measuring optical axis, a projecting direction detecting module for performing an angle measurement of the distance measuring optical axis, an image pickup unit, and an arithmetic control module for controlling a deflecting action of the optical axis deflector and a distance measuring action of a distance measuring unit, wherein the arithmetic control module is configured to detect an illumination light from an image acquired by the image pickup unit, to acquire a direction of the illuminating lamp based on a detection result, to make the optical axis deflector to scan with a distance measuring light around the acquired direction and to perform a distance measurement and an angle measurement along a scanning path.
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公开(公告)号：US20210041237A1
公开(公告)日：2021-02-11
申请号：US16944252
申请日：2020-07-31
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
Abstract: A surveying instrument includes a distance measuring module for measuring a distance to the object, in which the distance measuring module includes a light projecting optical system configured to project a distance measuring light and a light receiving optical system configured to receive a reflected distance measuring light, the light receiving optical system includes a prism having a quadrangular shape and a photodetector, the prism includes a first plane, a second plane, a third plate and a fourth plane, configured to enter the reflected distance measuring light in the first plane, sequentially internally reflect on the second plane, the first plane, and the third plane, transmit through the fourth plane, and project, and the reflect distance measuring light projected from the prism configured to be received by the photodetector.
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公开(公告)号：US20210038075A1
公开(公告)日：2021-02-11
申请号：US16966480
申请日：2018-12-26
Applicant: TOPCON CORPORATION
Inventor： Jun SAKAI , Shunsuke NAKAMURA , Kana NISHIKAWA , Masahiro AKIBA
Abstract: A blood flow measuring unit of a blood flow measurement apparatus of an embodiment includes an optical system for applying an OCT scan to an eye fundus and obtains blood flow information based on data acquired by the OCT scan. A movement mechanism moves the optical system. A controller applies a first movement control to the movement mechanism to move the optical system in a first direction orthogonal to an optical axis of the optical system by a predetermined distance from the optical axis. A judging unit judges occurrence of vignetting based on a detection result of return light of light incident on the eye through the optical system after the first movement control. The controller applies a second movement control to the movement mechanism to further move the optical system based on a judgement result obtained by the judging unit.
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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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公开(公告)号：US20210033422A1
公开(公告)日：2021-02-04
申请号：US16964188
申请日：2019-01-30
Applicant: Topcon Corporation
Inventor： Motohiro MIYAJIMA
Abstract: A surveying device 3 configured to perform a survey by tracking, as a survey target, a prism 13 attached to a camera 11 of a movable imaging device 2, includes an electronic distance meter 33 configured to measure a distance to the survey target; a horizontal angle detector 41 and a vertical angle detector 42 each configured to measure an angle; a main body 3a supporting these members; a time obtainer 47 configured to obtain a GPS time from a GPS satellite; a tilt sensor 48 configured to detect a posture of the main body 3a; a calibrator 49 configured to calibrate the tilt sensor 48; and a survey controller 40 that causes the calibrator 49 to perform calibration during a period in which the time obtainer 47 obtains the GPS time, as an advance preparation to be performed before the measurement.
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Patent Agency Ranking
公开(公告)号：US20210030272A1
公开(公告)日：2021-02-04
申请号：US16937626
申请日：2020-07-24
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：US10895632B2
公开(公告)日：2021-01-19
申请号：US15968913
申请日：2018-05-02
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Nobuyuki Nishita
Abstract: A target instrument has an object to be measured which is provided with a reflection sheet, wherein the total station has a distance measuring light projecting unit, a light receiving unit, a distance measuring unit for performing a distance measurement of an object to be measured, an optical axis deflector capable of deflecting the distance measuring optical axis two-dimensionally, a projecting direction detecting module for detecting a deflection angle of the distance measuring optical axis and performing an angle measurement, and an arithmetic control module for controlling the optical axis deflector and the distance measuring unit, wherein the arithmetic control module is configured to two-dimensionally scan the object to be measured with the distance measuring light and to perform a distance measurement and an angle measurement with respect to the object to be measured, and further to detect a tilt and a tilt direction of the target instrument.
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118.发明授权公开(公告)号：US10895456B1
公开(公告)日：2021-01-19
申请号：US16923135
申请日：2020-07-08
Applicant: Topcon Corporation
Inventor： Keisuke Nakamura , Yoshihiro Nishi
Abstract: A three-dimensional survey apparatus includes a collimating ranging unit, a scanner unit, and a control calculation portion. The control calculation portion stores coordinates of a machine reference point of the collimating ranging unit and a direction of a reference collimation of a telescope portion, stores first point group data, stores a direction of a first collimation of the telescope portion oriented from the movement source position toward a movement destination position, stores a direction of a second collimation of the telescope portion oriented from the movement destination position toward the movement source position and a movement distance, calculates and stores coordinates of the machine reference point at the movement destination position with the survey start position as a reference based on the direction of the first collimation, the direction of the second collimation, and the movement distance, and stores second point group data.
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公开(公告)号：US10823823B2
公开(公告)日：2020-11-03
申请号：US15894198
申请日：2018-02-12
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: A surveying instrument comprises a distance measuring unit which includes a light emitting element, a distance measuring light projecting unit, a light receiving unit and a photodetector for producing a light receiving signal, and which performs a distance measurement of an object to be measured based on the light receiving signal, an optical axis deflecting unit for deflecting the distance measuring optical axis, a projecting direction detecting unit for detecting a deflection angle of the distance measuring optical axis and an arithmetic control component, wherein the optical axis deflecting unit comprises a pair of optical prisms capable of rotating and motors which individually and independently rotate the optical prisms, and wherein the arithmetic control component is configured to control the optical axis deflecting unit, to perform a two-dimensional scanning of the distance measuring light, to perform a distance measurement of when the light receiving signal is detected, to measure a horizontal angle and a vertical angle of the object to be measured, and to obtain three-dimensional coordinates of the object to be measured based on a distance value, and the horizontal angle and the vertical angle.
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公开(公告)号：US20200340811A1
公开(公告)日：2020-10-29
申请号：US16852915
申请日：2020-04-20
Applicant: Topcon Corporation
Inventor： Kaoru KUMAGAI
Abstract: A technique for calculating charge in accordance with a state of use of a user in a rental business of total stations is provided. A total station includes a positioning unit, an operation receiving unit, a positioning mode selector, and a counter. The positioning unit performs positioning by using pulsed laser light. The operation receiving unit receives operation of a user. The positioning mode selector selects one of a first positioning mode and a second positioning mode on the basis of operation of the user to the operation receiving unit. In the first positioning mode, positioning is performed at a specific point at a relatively small laser wave number. In the second positioning mode, positioning is performed at a specific point at a relatively large laser wave number. The counter counts up each of the selected times of the first positioning mode and the second positioning mode.
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