公开(公告)号：US20190094341A1

公开(公告)日：2019-03-28

申请号：US16122054

申请日：2018-09-05

Applicant: TOPCON CORPORATION

Inventor： Ikuo ISHINABE ,  Taichi YUASA

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

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：US20190000316A1

公开(公告)日：2019-01-03

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 ,  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

公开(公告)号：US20180266818A1

公开(公告)日：2018-09-20

申请号：US15909461

申请日：2018-03-01

Applicant: TOPCON CORPORATION

Inventor： Ikuo ISHINABE ,  Fumio OHTOMO

IPC: G01C3/08 ,  G01B11/02 ,  G01S17/08

CPC classification number: G01C3/08 ,  G01B11/026 ,  G01C15/002 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/497 ,  G01S7/51 ,  G01S17/023 ,  G01S17/08 ,  G01S17/42

Abstract: The measurement device includes a light source that emits the distance measurement light, a focusing member that transmits the reflected distance measurement light and reflects reflected collimated light to form an image of the measurement target object, the reflected collimated light being reflected by the measurement target object and in a wavelength band different from a wavelength band of the reflected distance measurement light, a distance measurement light reception unit that receives the reflected distance measurement light that has been transmitted through the focusing member and the internal reference light, and a collimated light reception unit that receives the reflected collimated light reflected by the focusing member.

公开(公告)号：US20180116502A1

公开(公告)日：2018-05-03

申请号：US15786092

申请日：2017-10-17

Applicant: TOPCON CORPORATION

Inventor： Ikuo ISHINABE

IPC: A61B3/10 ,  A61B3/00 ,  A61B3/12

CPC classification number: A61B3/102 ,  A61B3/0008 ,  A61B3/1025 ,  A61B3/117 ,  A61B3/12 ,  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.