公开(公告)号：US20180284238A1

公开(公告)日：2018-10-04

申请号：US15935138

申请日：2018-03-26

Applicant: TOPCON CORPORATION

Inventor： Hideki MORITA ,  Ken'ichiro YOSHINO ,  Yasushi TANAKA

IPC: G01S7/481 ,  G01S17/42 ,  G01S17/89

CPC classification number: G01S7/4818 ,  G01B11/002 ,  G01C15/002 ,  G01S7/4813 ,  G01S17/42 ,  G01S17/89

Abstract: A three-dimensional measurement device includes a light source unit that emits distance measurement light, a projection light optical system that causes the distance measurement light, emitted by the light source unit, to be emitted along a distance measurement light axis, a light receiving optical unit that receives the reflected distance measurement light, a light receiving and splitting unit that splits the reflected distance measurement light that has transmitted through the light receiving optical unit into first reflected split light and second reflected split light, attenuates intensity of the second reflected split light to be lower than intensity of the first reflected split light, and converts the first reflected split light and the second reflected split light into electrical signals, and angle detection units that detect a light emitting direction of the distance measurement light.

公开(公告)号：US20190064326A1

公开(公告)日：2019-02-28

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

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：US20230077077A1

公开(公告)日：2023-03-09

申请号：US18050962

申请日：2022-10-28

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：US20190145769A1

公开(公告)日：2019-05-16

申请号：US16168924

申请日：2018-10-24

Applicant: TOPCON CORPORATION

Inventor： You SASAKI ,  Yasushi TANAKA ,  Nobuyuki NISHITA

IPC: G01C15/00 ,  G02B23/10 ,  G01S17/10 ,  G01S17/89 ,  G01S7/48 ,  G01S7/481 ,  G01S7/51

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：US20190129007A1

公开(公告)日：2019-05-02

申请号：US16170098

申请日：2018-10-25

Applicant: TOPCON CORPORATION

Inventor： Nobuyuki NISHITA ,  Yasushi TANAKA

IPC: G01S7/481 ,  G01S17/42

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：US20190063919A1

公开(公告)日：2019-02-28

申请号：US16100682

申请日：2018-08-10

Applicant: TOPCON CORPORATION

Inventor： Yasuo TERASHIMA ,  Yasushi TANAKA

IPC: G01C15/00 ,  F16C25/08

Abstract: A structure applies a pre-load to a rolling bearing, which makes pre-load control easier than heretofore and enables low cost production. A pre-load applying structure is configured to apply a pre-load to a bearing of a scanning part of a three-dimensional survey device. The three-dimensional survey device includes the bearing having an inner ring to which a vertically rotating shaft is fixed, a scanning mirror attached to the vertically rotating shaft, and a motor for rotationally driving the vertically driving shaft. The pre-load applying structure has a sleeve that engages with an outer ring of the bearing, a plate spring that detachably engages with the sleeve and is fastened to a housing body with a screw, and a ring that detachably join the sleeve and the plate spring. The plate spring applies the pre-load to the outer ring via the sleeve by elastic deforming.