公开(公告)号：US20220229182A1

公开(公告)日：2022-07-21

申请号：US17575726

申请日：2022-01-14

Applicant: TOPCON Corporation

Inventor： Fumio Ohtomo ,  Kaoru Kumagai ,  Ikuo Ishinabe

IPC: G01S17/42 ,  G01C15/00 ,  G01C9/06 ,  G01S17/89

Abstract: There is provided a surveying instrument including a distance measurement arithmetic module configured to measure a distance to an object and the reflection intensity of a reflected distance measuring light based on a distance measuring light and the reflected distance measuring light, a narrow-angle image pickup module configured to acquire an image with an axis of the distance measuring optical as a center, an optical axis deflector configured to have a wavelength dispersion compensation prism arranged in the distance measuring optical axis and deflect the distance measuring optical axis by the rotation of the wavelength dispersion compensation prism, an extracting means configured to extract an end face reflection image of the wavelength dispersion compensation prism from the image, and an arithmetic control module configured to calculate a deflecting direction of the optical axis deflector based on the end face reflection image extracted by the extracting means.

公开(公告)号：US20200096334A1

公开(公告)日：2020-03-26

申请号：US16571572

申请日：2019-09-16

Applicant: TOPCON Corporation

Inventor： Fumio Ohtomo ,  Ikuo Ishinabe ,  Kaoru Kumagai

IPC: G01C15/00 ,  G01C11/14 ,  G01S7/48 ,  G01S17/66

Abstract: A surveying instrument comprises a distance measuring light projecting module, a light receiving module, an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a wide-angle image pickup module, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction, a narrow-angle image pickup module, a distance measurement calculating module and an arithmetic control module, wherein the arithmetic control module is configured to control the optical axis deflector and the distance measurement calculating module, wherein the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of a distance measuring light and a light reception timing of a reflected distance measuring light, and wherein the narrow-angle image pickup module is configured to acquire a narrow-angle image with the distance measuring optical axis as an image center.

公开(公告)号：US10568504B2

公开(公告)日：2020-02-25

申请号：US15786092

申请日：2017-10-17

Applicant: TOPCON CORPORATION

Inventor： Ikuo Ishinabe

IPC: A61B3/10 ,  A61B3/12 ,  A61B3/00 ,  A61B3/117 ,  A61B3/14

Abstract: An ophthalmologic apparatus according to some embodiments comprise an objective lens, a data acquisition system, and an anterior segment photographing system. The data acquisition system is configured to acquire data of a subject's eye optically via the objective lens. The anterior segment photographing system includes a pair of optical systems for photographing an anterior segment of the subject's eye from different directions via the objective lens.

公开(公告)号：US11698254B2

公开(公告)日：2023-07-11

申请号：US17017871

申请日：2020-09-11

Applicant: TOPCON Corporation

Inventor： Ikuo Ishinabe ,  Fumio Ohtomo ,  Kaoru Kumagai

IPC: G01C15/00 ,  G01C15/02 ,  G01S7/481 ,  G01S17/08

CPC classification number: G01C15/002 ,  G01C15/004 ,  G01C15/02 ,  G01S7/4812 ,  G01S17/08

Abstract: A surveying instrument including an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a narrow-angle image pickup module having an optical axis a part of which is common to the distance measuring optical axis, a distance measurement calculation module and an arithmetic control module, in which the wavelength dispersion compensation prisms which is constituted of a plurality of optical members having the different wavelength characteristics are provided in the part of which is common to the distance measuring optical axis and the narrow-angle image pickup optical axis, the arithmetic control module performs the distance measurement of a measuring point based on a signal of the distance measuring light and a signal of the reflected distance measuring light, and acquires a narrow-angle image in which the dispersion has been compensated by the wavelength dispersion compensation prisms.

公开(公告)号：US20190154805A1

公开(公告)日：2019-05-23

申请号：US16183017

申请日：2018-11-07

Applicant: TOPCON Corporation

Inventor： Fumio Ohtomo ,  Ikuo Ishinabe ,  Kaoru Kumagai

IPC: G01S7/481 ,  G01S7/48 ,  G01S17/08 ,  G01S17/89

Abstract: A distance measuring light projecting module comprises a light receiving module for receiving a reflected distance measuring light and a background light, a distance measuring unit for receiving the reflected distance measuring light and performs a distance measurement, an image pickup module for receiving the background light and for acquiring a background image, an optical axis deflector for integrally deflecting an optical axis of the distance measuring light and an optical axis of the background light, and an arithmetic control module for controlling the optical axis deflector, wherein the optical axis deflector has a rotary driving module for rotating a pair of disk prisms individually, and a projecting direction detecting module for detecting a rotation angle of each of the disk prisms.

公开(公告)号：US11506759B2

公开(公告)日：2022-11-22

申请号：US16183017

申请日：2018-11-07

Applicant: TOPCON Corporation

Inventor： Fumio Ohtomo ,  Ikuo Ishinabe ,  Kaoru Kumagai

IPC: G01S7/481 ,  G01S17/08 ,  G01S7/48 ,  G01S7/497 ,  G01S17/42 ,  G01S17/66 ,  G01C15/00 ,  G01S17/86

Abstract: A distance measuring light projecting module comprises a light receiving module for receiving a reflected distance measuring light and a background light, a distance measuring unit for receiving the reflected distance measuring light and performs a distance measurement, an image pickup module for receiving the background light and for acquiring a background image, an optical axis deflector for integrally deflecting an optical axis of the distance measuring light and an optical axis of the background light, and an arithmetic control module for controlling the optical axis deflector, wherein the optical axis deflector has a rotary driving module for rotating a pair of disk prisms individually, and a projecting direction detecting module for detecting a rotation angle of each of the disk prisms.

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

IPC: G01S17/89 ,  G01S7/497 ,  G01S17/08 ,  G01S7/48 ,  G01S7/481

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.

公开(公告)号：US20210088333A1

公开(公告)日：2021-03-25

申请号：US17017871

申请日：2020-09-11

Applicant: TOPCON Corporation

Inventor： Ikuo Ishinabe ,  Fumio Ohtomo ,  Kaoru Kumagai

IPC: G01C15/00 ,  G01C15/02

Abstract: A surveying instrument including an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a narrow-angle image pickup module having an optical axis a part of which is common to the distance measuring optical axis, a distance measurement calculation module and an arithmetic control module, in which the wavelength dispersion compensation prisms which is constituted of a plurality of optical members having the different wavelength characteristics are provided in the part of which is common to the distance measuring optical axis and the narrow-angle image pickup optical axis, the arithmetic control module performs the distance measurement of a measuring point based on a signal of the distance measuring light and a signal of the reflected distance measuring light, and acquires a narrow-angle image in which the dispersion has been compensated by the wavelength dispersion compensation prisms.

公开(公告)号：US10932664B2

公开(公告)日：2021-03-02

申请号：US16061724

申请日：2016-07-29

Applicant: TOPCON CORPORATION

Inventor： Ryoichi Hirose ,  Ikuo Ishinabe ,  Tatsuo Yamaguchi

IPC: A61B3/12 ,  A61B3/10 ,  A61B3/14 ,  A61B3/117 ,  A61B5/00

Abstract: An ophthalmic device that comprises a first objective lens system, an optical system, an anterior eye segment photographing system, and a first optical-path combining member. The first objective lens system includes two or more lenses. The optical system includes a projection system configured to project light onto a target eye via the first objective lens system. The anterior eye segment photographing system is used for photographing an anterior eye segment of the target eye. The first optical-path combining member is located between the two or more lenses to combine an optical path of the optical system and an optical path of the anterior eye segment photographing system.