公开(公告)号：US11585900B2

公开(公告)日：2023-02-21

申请号：US16170098

申请日：2018-10-25

Applicant: TOPCON CORPORATION

Inventor： Nobuyuki Nishita ,  Yasushi Tanaka

IPC: G01S7/481 ,  G01S17/42 ,  G01C15/06 ,  G01C15/00

Abstract: In measurement with a surveying device having a surveying function and a laser scanner function, three-dimensional coordinates of a reflecting prism acquired with the surveying function and three-dimensional coordinates of a vertex of a polyhedron generated by processing point group data acquired with the laser scanner function are made to coincide with each other. The reflecting prism is used together with the surveying device having the surveying function and the laser scanner function, is provided to a measurement target object, and is disposed in such a position that the vertex position of the measurement target object coincides with or is considered to coincide with the optical center position of the prism.

公开(公告)号：US11520015B2

公开(公告)日：2022-12-06

申请号：US16106309

申请日：2018-08-21

Applicant: TOPCON CORPORATION

Inventor： Yasushi Tanaka ,  Takaaki Saito ,  Ken'ichiro Yoshino ,  Mitsuru Kanokogi

IPC: G01S7/481 ,  G01S7/497 ,  G01J3/10 ,  G01S17/89 ,  G01S17/10 ,  G01S17/42

Abstract: A 3-dimensional measuring device includes: a light source unit; a projection optical system; a scanning mirror that is provided to be rotatable about a rotating shaft in a state of being inclined with respect to a shaft center of the rotating shaft to radiate a range-finding light within a plane crossing the rotating shaft in a rotary manner; a light-receiving optical system that receives a reflection range-finding light; a reference light optical system that is provided in a range outside a measuring range within a radiation range to receive and reflect the range-finding light as an internal reference light, the reference light optical system being capable of changing a light quantity of the internal reference light; and a light receiving element that receives the reflection range-finding light and the internal reference light.

公开(公告)号：US11307031B2

公开(公告)日：2022-04-19

申请号：US16168924

申请日：2018-10-24

Applicant: TOPCON CORPORATION

Inventor： You Sasaki ,  Yasushi Tanaka ,  Nobuyuki Nishita

IPC: G01S17/10 ,  G01S17/89 ,  G01S7/48 ,  G01C15/00 ,  G02B23/10 ,  G01S7/51 ,  G01S7/481 ,  G01S17/87 ,  G01C3/08 ,  G01S7/497 ,  G01C1/02 ,  G01S17/42

Abstract: A technique is provided to enable check of a calibrated condition of a total station (TS) having a laser scanner in a surveying site. The TS includes an optical system for sighting an object, a laser positioning part that irradiates the object with laser light via the optical system to position the object, and a plane crossing location identifying part that identifies a crossing location of multiple planes constituting a three-dimensional structure as a first location, on the basis of the positioning result from the laser positioning part. The TS also includes a laser scanner that performs laser scanning in an area containing the crossing location, a plane crossing location calculator that calculates the crossing location as a second location on the basis of laser scanning data from the laser scanner, and a comparing part that compares the first location and the second location with each other.

公开(公告)号：US10534075B2

公开(公告)日：2020-01-14

申请号：US15097745

申请日：2016-04-13

Applicant: TOPCON Corporation

Inventor： Hideyuki Matsumoto ,  Yasushi Tanaka ,  Shoji Hayashi ,  Takaaki Saito

IPC: G01C3/08 ,  G01S7/497 ,  G01S17/42 ,  G01S7/481

Abstract: The invention provides a three-dimensional surveying instrument, which comprises a light emitter for emitting a distance measuring light, a light projecting optical unit for irradiating a distance measuring light from the light emitter along a distance measuring optical axis, a light receiving optical unit for receiving a reflection light from an object to be measured, a photodetection element for converting the reflection light as focused at the light receiving optical unit to an electric signal, a scanning unit for scanning a distance measuring light with respect to the object to be measured provided on a frame unit, angle detecting units for detecting an irradiating direction of the distance measuring light as scanned by the scanning unit, a vibration detecting unit for detecting vibration amount of the frame unit, and a control arithmetic unit having a storage unit where a threshold value is stored, wherein the control arithmetic unit controls so that the number of rotations of the scanning unit is gradually increased from low rotation number to the maximum rotation number, stores in the storage unit by associating the number of rotations with vibration amount as detected, compares vibration amount corresponding to the number of rotations as calculated based on measurement conditions with the threshold value, and performs measurement on the object to be measured in a case where it is judged that vibration amount corresponding to the number of rotations as calculated is lower than the threshold value.

公开(公告)号：US20190170861A1

公开(公告)日：2019-06-06

申请号：US16202322

申请日：2018-11-28

Applicant: TOPCON Corporation

Inventor： Naoto Takahashi ,  Yasushi Tanaka

IPC: G01S7/481 ,  G01S17/42

Abstract: Provided is a surveying instrument comprises a total station, a mounting base which is fixed on an upper surface of the total station at three points, and a two-dimensional laser scanner which is fixed on an upper surface of the mounting base at three points, wherein the total station is configured to perform a three-dimensional measurement of a measuring point by a first distance measuring light, wherein the two-dimensional laser scanner is configured to acquire point cloud data along a scanning line by a second distance measuring light.