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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：US10712430B2
公开(公告)日：2020-07-14
申请号：US15647391
申请日：2017-07-12
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
Abstract: An optical system of a laser scanner comprising: a light projecting system for projecting a distance measuring light, a scanning mirror for rotatably irradiating the distance measuring light from the light projecting system around a single axis and for making a reflected distance measuring light from an object to be measured enter a light receiving system, a transmission window for accommodating the scanning mirror and through which the distance measuring light and the reflected distance measuring light are transmitted, and a correction optical component for offsetting an optical action of the transmission window, which is provided at least in a middle of an irradiating optical path of the distance measuring light.
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公开(公告)号：US11913786B2
公开(公告)日：2024-02-27
申请号：US17062879
申请日：2020-10-05
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
IPC: G01C15/00 , G01S7/481 , G01S7/4865 , G01S17/10
CPC classification number: G01C15/002 , G01S7/4817 , G01S7/4865 , G01S17/10
Abstract: A surveying instrument including a light projecting optical system which projects the distance measuring light, a light receiving optical system which receives the reflected distance measuring light from an object, a frame unit 5 which horizontally rotates around a horizontal rotation shaft, a scanning mirror which is provided in the frame unit, vertically rotates, a horizontal angle detector which detects a horizontal angle of the frame unit, a vertical angle detector which detects a vertical angle of the scanning mirror and an arithmetic control module which calculates the three-dimensional coordinates of the object, in which the light receiving optical system has a reflecting mirror having a reflecting surface which is an off-axis paraboloidal surface or an off-axis free-form surface, and the reflected distance measuring light is configured to be led to a light receiving module by the reflecting mirror while being condensed.
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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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公开(公告)号：US20220026207A1
公开(公告)日：2022-01-27
申请号：US17383574
申请日：2021-07-23
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
Abstract: Provided is a surveying instrument including a distance measuring light projector configured to project a distance measuring light to an object, a distance measuring light receiver having a photodetector configured to receive a reflected distance measuring light from the object, a tracking light projector configured to project a tracking light to the object, a tracking light receiver having a tracking photodetector configured to receive a reflected tracking light from the object, and an image pickup module configured to receive a background light, in which the distance measuring light projector and the tracking light projector include a first deflecting optical member, and the distance measuring light projector, the tracking light projector, and the image pickup module include a second deflecting optical member.
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Patent Agency Ranking
公开(公告)号：US20210123734A1
公开(公告)日：2021-04-29
申请号：US17062879
申请日：2020-10-05
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
IPC: G01C15/00 , G01S7/481 , G01S17/10 , G01S7/4865
Abstract: A surveying instrument including a light projecting optical system which projects the distance measuring light, a light receiving optical system which receives the reflected distance measuring light from an object, a frame unit 5 which horizontally rotates around a horizontal rotation shaft, a scanning mirror which is provided in the frame unit, vertically rotates, a horizontal angle detector which detects a horizontal angle of the frame unit, a vertical angle detector which detects a vertical angle of the scanning mirror and an arithmetic control module which calculates the three-dimensional coordinates of the object, in which the light receiving optical system has a reflecting mirror having a reflecting surface which is an off-axis paraboloidal surface or an off-axis free-form surface, and the reflected distance measuring light is configured to be led to a light receiving module by the reflecting mirror while being condensed.
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公开(公告)号：US20170102233A1
公开(公告)日：2017-04-13
申请号：US15284900
申请日：2016-10-04
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
CPC classification number: G01C3/32 , G01S7/4812 , G01S7/4815 , G01S17/023 , G01S17/42 , G01S17/66 , G01S17/89 , G02B17/0605 , G02B17/0804 , G02B17/0808 , G02B17/0856 , G02B17/086 , G02B27/141 , G02B27/146
Abstract: The invention provides an image-forming optical component, which comprises a concaved reflection surface for reflecting an incident light and a convexed reflection surface arranged opposite to the concaved reflection surface, wherein the concaved reflection surface reflects the incident light so that the incident light is condensed on the convexed reflection surface, and the convexed reflection surface is adapted to focus the incident light.
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公开(公告)号：US11275154B2
公开(公告)日：2022-03-15
申请号：US16122054
申请日：2018-09-05
Applicant: TOPCON CORPORATION
Inventor： Ikuo Ishinabe , Taichi Yuasa
Abstract: A method of correcting a measurement value of a laser scanner includes: in a laser scanner including a light emitting unit, a light receiving unit, a distance measuring unit, an optical axis deflecting unit having at least a pair of prisms deflecting a distance measuring light and a reflected distance measuring light, and an emitting direction detecting unit detecting a deflection angle and an emitting direction of the distance measuring light from the optical axis deflecting unit, (a) measuring a distance to a measurement point, (b) detecting rotation angles of the prisms, and (c) obtaining, based on rotation angles of the prisms, a true distance measurement value corrected for a length of an optical path length difference in light emission and/or light reception caused according to the rotation angles of the prisms by subtracting the optical path length difference from a distance measurement value of the distance measuring unit.
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公开(公告)号：US10578485B2
公开(公告)日：2020-03-03
申请号：US15284886
申请日：2016-10-04
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
IPC: G01J3/00 , G01J3/02 , G02B27/00 , G02B5/10 , G02B13/18 , G01J3/10 , G01J3/42 , G01N21/27 , G01N33/38
Abstract: The invention provides a spectroscopic instrument, which comprises a projecting optical system for projecting a projecting light emitted from a light source, a photodetecting optical system for receiving a reflection light from an object to be measured and for guiding to a photodetection member, and a spectroscope for detecting a condition of the object to be measured based on the reflection light as received by the photodetection member, wherein the projecting optical system and the photodetecting optical system have a projecting system chromatic aberration decreasing component and a photodetecting system chromatic aberration decreasing component which eliminate chromatic aberrations, respectively.
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公开(公告)号：US10557791B2
公开(公告)日：2020-02-11
申请号：US15545387
申请日：2016-01-19
Applicant: TOPCON CORPORATION
Inventor： Taichi Yuasa
IPC: G01N33/38 , G01N21/359 , G01N21/3563
Abstract: A spectroscopic measuring device includes a halogen lamp as a light source, a lens of an irradiating system, a mirror, and a spectrometer. The lens of the irradiating optical system emits light from the halogen lamp to a measurement object. The mirror is an optical member, and the mirror is arranged coaxial with the lens and conducts detecting light between the halogen lamp and the measurement object, to the spectrometer. The spectrometer is an analyzing part and analyzes material of the measurement object on the basis of the light received via the mirror. The light from the halogen lamp to the measurement object passes through the peripheral part of the optical axis of the lens, and the light to be received by the spectrometer passes through the center part of the optical axis of the lens, at the position of the mirror.
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