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公开(公告)号：US11333496B2
公开(公告)日：2022-05-17
申请号：US16398354
申请日：2019-04-30
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Tetsuji Anai
Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body provided at a known distance from a lower end of the monopod and at a known angle with respect to an axis of the monopod and having a reference optical axis, wherein the surveying instrument main body performs an image pickup of an object to be measured and scans the object to be measured by a closed loop scan pattern respectively at a pre-rotation and a post-rotation of the surveying instrument main body, obtains cross points of a locus of a scan pattern of the pre-rotation and the post-rotation, obtains deflection angles of the cross point with respect to the reference optical axis of the pre-rotation and the post-rotation, and calculates a rotation angle of the surveying instrument main body based on a deviation between both of the deflection angles.
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公开(公告)号：US11150346B2
公开(公告)日：2021-10-19
申请号：US15667668
申请日：2017-08-03
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Tetsuji Anai
Abstract: A measuring method, wherein point cloud data of a building is acquired by a laser scanner, wherein the laser scanner has an attitude detector for detecting a tilting with respect to a horizontality or a verticality, converts the point cloud data into a horizontal distance and a height or a difference of a height based on the tilting detected by the attitude detector, sets a height line at a predetermined height on a wall surface, averages a horizontal distance information of the point cloud data included in a predetermined width with the height line as a center in a height direction, further develops the horizontal distance information along the height line in a horizontal direction, and measures a horizontal cross section at the predetermined height.
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公开(公告)号：US11035936B2
公开(公告)日：2021-06-15
申请号：US16019794
申请日：2018-06-27
Applicant: TOPCON CORPORATION
Inventor： Hideyuki Matsumoto , Fumio Ohtomo
Abstract: A deflecting device and a surveying instrument for deflecting an optical axis two-dimensionally comprising a ring-shaped holding member; ring gears disposed on both sides of the holding member with the holding member interposed between the ring gears and concentric with the holding member; rotary bearings disposed between the holding member and the ring gears on both sides of the holding member and concentric with the holding member; optical deflecting members disposed at central portions of the ring gears and integrated with the ring gears; deflection motors corresponding to the respective ring gears; a drive transmitting member configured to transmit rotary force of the deflection motors to the ring gears; and urging members configured to urge the ring gears in a direction parallel with rotation axes of the ring gears.
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公开(公告)号：US11029154B2
公开(公告)日：2021-06-08
申请号：US15975049
申请日：2018-05-09
Applicant: TOPCON CORPORATION
Inventor： Hideyuki Matsumoto , Fumio Ohtomo , Kaoru Kumagai
Abstract: A deflecting device and surveying instrument comprising a holding member having a ring shape; ring gears disposed on both sides of the holding member with the holding member interposed the ring gears, the ring gears being concentric with the holding member; bearings disposed between the holding member and the ring gears on both sides of the holding member, the bearings being concentric with the holding member; optical deflecting members disposed at central portions of the ring gears and integrated with the ring gears; deflection motors corresponding to the respective ring gears; and a drive transmitting member configured to transmit rotary force of the deflection motors to the ring gears.
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公开(公告)号：US20210116241A1
公开(公告)日：2021-04-22
申请号：US17070966
申请日：2020-10-15
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Nobuyuki Nishita , Kaoru Kumagai
IPC: G01C15/00
Abstract: An inner frame is rotatably supported by the outer frame through a first shaft, a tilt detecting unit has a tilt sensor and is rotatably supported by the inner frame through a second shaft orthogonal to the first shaft, a first encoder is provided on the first shaft, a second encoder is provided on the second shaft, the tilt detecting device includes the motors provided on the respective shafts so that the respective shafts are rotated, and an arithmetic processing module which drives and controls the respective motors, in which the arithmetic processing module is configured to drive the respective motors so that the tilt sensor detects the horizontality based on a signal issued by the tilt sensor and to calculate a tilt of the outer frame based on the outputs from the first and second encoders when the tilt sensor detected the horizontality, and the arithmetic processing module is configured to reverse the tilt detecting unit 180° at least once based on the outputs from the respective encoders in relation to the first shaft and the second shaft in a stationary state of the tilt detecting device, and to perform the calibration of the tilt sensor based on the detection signals output from the tilt sensor before and after the reversal.
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Patent Agency Ranking
公开(公告)号：US10823558B2
公开(公告)日：2020-11-03
申请号：US15345714
申请日：2016-11-08
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: The invention provides a surveying instrument, which comprises a protractor table installed via an installation base and capable of detecting a lateral rotation angle and a surveying instrument main unit mounted on the protractor table via supporting mechanisms capable of rotating longitudinally, wherein the supporting mechanisms enables the surveying instrument main unit to set in a predetermined angle condition with respect to the protractor table, wherein the surveying instrument main unit comprises a distance measuring unit which has a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit for projecting the distance measuring light, a light receiving unit for receiving a reflected distance measuring light and a photodetector for receiving the reflected distance measuring light and for producing a light receiving signal, and the distance measuring unit performs a distance measurement of an object to be measured based on the light receiving signal from the photodetector, a control unit for controlling a distance measuring operation, an optical axis deflecting unit, which is provided on an optical axis of the distance measuring light projecting unit and on an optical axis of the light receiving unit, for controlling a deflection of the both optical axes and an attitude detecting unit which has a tilt detecting unit for detecting a horizontal and mechanisms for tilting the tilt detecting unit so that the tilt detecting unit is maintained horizontally, and is configured to detect a tilting amount of the surveying instrument main unit.
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公开(公告)号：US20200318963A1
公开(公告)日：2020-10-08
申请号：US16824785
申请日：2020-03-20
Applicant: TOPCON Corporation
Inventor： Satoshi Hirano , Kaoru Kumagai , Fumio Ohtomo , Kazuki Osaragi , Nobuyuki Nishita , Tetsuji Anai , Noriyasu Kiryuu
Abstract: There is provided a surveying instrument including a monopod which is installed on a reference point, a surveying instrument main body which is provided at a known distance from a lower end of the monopod and a known angle with respect to an axis of the monopod, two auxiliary legs which extend downward from an middle portion of the monopod at a predetermined angle, wherein the surveying instrument main body comprises a distance measuring unit configured to measure a distance to an object to be measured, a measuring direction image pickup module configured to acquire an observation image including the object to be measured, an attitude detector configured to detect the tilts of the surveying instrument main body with respect to the horizontality, and an arithmetic control module, and wherein the surveying instrument main body is supported by three points by the monopod and the auxiliary legs.
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公开(公告)号：US10697758B2
公开(公告)日：2020-06-30
申请号：US15636767
申请日：2017-06-29
Applicant: TOPCON CORPORATION
Inventor： Fumio Ohtomo , Kaoru Kumagai
Abstract: A laser remote length measurement instrument capable of remotely measuring a length between two required points in a non-contact manner is provided. The laser remote length measurement instrument includes a rangefinding unit, an optical axis deflection section, a rotation angle detector, and a computation controller. The rangefinding unit is configured to cause a light emitting element to emit visible rangefinding light and obtain a light reception signal. The optical axis deflection section is configured to scan to-and-fro between two directions with the rangefinding light. The rotation angle detector is configured to detect a divergence angle between the two directions. The computation controller is configured to compute a distance between illuminated points in the two directions illuminated with the rangefinding light on the basis of rangefinding results for the illuminated points and the divergence angle between the two directions.
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公开(公告)号：US20190186912A1
公开(公告)日：2019-06-20
申请号：US16216218
申请日：2018-12-11
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Tetsuji Anai , Kaoru Kumagai
CPC classification number: G01C15/006 , G01C5/00 , G01C15/008
Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body having a reference optical axis and an operation panel, wherein the surveying instrument main body has a distance measuring unit, an arithmetic control module, a measuring direction image pickup module which acquires a first image, and an attitude detector which detects tilts of two axes of the surveying instrument main body to the horizontal, and wherein the operation panel has a display unit, a calculating module, and as operation module, and the at least either one of the arithmetic control module and the calculating module calculates a tilt angle of the reference optical axis to the horizontal and a tilt angle of the monopod to the vertical, and the at least either one measures a horizontal distance and a vertical distance to the object to be measured with reference to the reference point.
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公开(公告)号：US20190094363A1
公开(公告)日：2019-03-28
申请号：US16132869
申请日：2018-09-17
Applicant: TOPCON Corporation
Inventor： Fumio Ohtomo , Kaoru Kumagai , Ken-ichiro Yoshino
Abstract: A laser measuring instrument comprises a light emitter, a driver, a scanning unit, a light receiving signal processing module for detecting a reciprocating time per pulsed light of a distance measuring light and performing a distance measurement, and a timing generating circuit for issuing a timing signal, wherein the timing generating circuit is configured to issue a timing signal for making the light emitter pulse-emit in a short cycle and a timing signal for pausing a light emission, the driver is configured to make the light emitter pulse-emit according to the timing signals, a light emission time interval in the short cycle is set such that a measuring point is multiply irradiated with the pulsed light by two or more times within a time when the pulsed light passes the measuring point, and the light receiving signal processing module is configured to integrate acquired light receiving signals and to carry out the distance measurement.
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