公开(公告)号：US20230133949A1

公开(公告)日：2023-05-04

申请号：US18076385

申请日：2022-12-06

Applicant: Topcon Corporation

Inventor： Yoshikiyo MORIGUCHI ,  Akiko ISHIKAWA

IPC: A61F9/008

Abstract: An ophthalmic apparatus includes an interference optical system, an optical scanner controller, and a correction controller. The interference optical system includes an astigmatism correction optical member and an optical scanner, and is configured to split light from a light source into reference light and measurement light, to irradiate the measurement light onto the subject’s eye via the astigmatism correction optical member and the optical scanner, and to detect interference light between returning light of the measurement light from the subject’s eye and the reference light. The optical scanner controller is configured to control the optical scanner so as to deflect the measurement light in a horizontal direction and a vertical direction on a plane perpendicular to an optical axis of the interference optical system. The correction controller is configured to control the astigmatism correction optical member so as to correct astigmatism based on a detection result of the interference light obtained by the interference optical system.

公开(公告)号：US20230277055A1

公开(公告)日：2023-09-07

申请号：US18197754

申请日：2023-05-16

Applicant: Topcon Corporation

Inventor： Yasufumi FUKUMA ,  Yoshikiyo MORIGUCHI

IPC: A61B3/12 ,  A61B3/14 ,  A61B3/10

CPC classification number: A61B3/12 ,  A61B3/14 ,  A61B3/102 ,  A61B3/1025

Abstract: A fundus observation apparatus includes an illumination optical system, a two-dimensional image sensor, and a deflecting member. The illumination optical system is configured to illuminate a fundus of a subject's eye with line-shaped illumination light. The two-dimensional image sensor is configured to receive returning light of the illumination light from the fundus on a movable focal plane at a position substantially conjugate optically to the fundus. The deflecting member is configured to couple an optical path of the illumination light and an optical path of the returning light and to scan the fundus with the illumination light by deflecting the illumination light in synchronization with a movement of the focal plane. The deflecting member has a configuration that allows the returning light to be transmitted through a first region and to reflect the illumination light in a second region different from the first region.

公开(公告)号：US20220175246A1

公开(公告)日：2022-06-09

申请号：US17679085

申请日：2022-02-24

Applicant: Topcon Corporation

Inventor： Yoshikiyo MORIGUCHI

IPC: A61B3/135 ,  A61B3/00 ,  A61B3/10

Abstract: An ophthalmic apparatus includes an irradiation optical system, an optical scanner, an optical splitting and combining unit, and a detector. The irradiation optical system includes a light source and is configured to generate measurement light using light from the light source. The optical scanner is configured to deflect the measurement light and to guide the deflected measurement light to a subject's eye. The optical splitting and combining unit is configured to guide the measurement light to the optical scanner and to generate interference light between reference light that is generated from the light from the light source and returning light of the measurement light from the subject's eye. The detector is configured to detect the returning light and the interference light via the optical splitting and combining unit.

公开(公告)号：US20180303339A1

公开(公告)日：2018-10-25

申请号：US15771459

申请日：2016-10-19

Applicant: TOPCON CORPORATION

Inventor： Yoshikiyo MORIGUCHI

IPC: A61B3/15 ,  A61B3/10 ,  A61B3/00 ,  A61B3/12

Abstract: An ophthalmological imaging device comprising an objective lens, an interference optical system, an image forming unit, an optical member, and an analyzer. The interference optical system divides light from a light source into measurement light and reference light, causes the measurement light to become incident on a subject's eye via the objective lens, and detects interference light between the reference light and return light of the measurement light that has exited from the subject's eye and passed through the objective lens. The image forming unit forms an image of the subject's eye based on a detection result of the interference light which are acquired by the interference optical system. The analyzer analyzes a first detection result and a second detection result of the interference light to eliminate noise in the second detection result or in an image based on the second detection result.

公开(公告)号：US20220265135A1

公开(公告)日：2022-08-25

申请号：US17179413

申请日：2021-02-19

Applicant: TOPCON CORPORATION

Inventor： Toshihiro MINO ,  Yoshikiyo MORIGUCHI ,  Akiko ISHIKAWA

IPC: A61B3/00 ,  G06T5/00 ,  G06T7/00 ,  A61B3/10 ,  A61B3/103

Abstract: An ophthalmologic information processing apparatus according to the embodiments includes a search unit, a correction unit, and a display control unit. The search unit is configured to search for filter information for correcting an aberration in complex OCT data of a subject's eye so that a quality of the complex OCT data becomes a predetermined level. The correction unit is configured to correct the aberration in the complex OCT data based on the filter information searched by the search unit. The display control unit is configured to display, on a display means, aberration information on a pupil surface of the subject's eye corresponding to the filter information searched by the search unit.

公开(公告)号：US20200183251A1

公开(公告)日：2020-06-11

申请号：US16637774

申请日：2018-07-30

Applicant: TOPCON CORPORATION ,  RIKEN

Inventor： Yoshikiyo MORIGUCHI ,  Hiroaki MINAMIDE

IPC: G02F2/00 ,  G02F1/35 ,  G02F1/39 ,  H01S3/10

Abstract: A terahertz-wave generation method of generating a terahertz wave in a direction satisfying a non-collinear phase-matching condition by making pump light incident on a nonlinear optical crystal capable of generating a terahertz wave by optical parametric effect, makes the pump light incident on the nonlinear optical crystal so that a peak excited power density is equal to or greater than a predetermined terahertz-wave lasing threshold and equal to or less than a predetermined laser damage threshold, and an average excited power density is equal to or less than a predetermined photorefractive effect occurrence threshold, the pump light having a pulse width of 10 ps or more, the pulse width of 1 ns or less, and a repetition frequency of 1 kHz or more.

公开(公告)号：US20180353067A1

公开(公告)日：2018-12-13

申请号：US15768851

申请日：2016-10-19

Applicant: TOPCON CORPORATION

Inventor： Yoshikiyo MORIGUCHI

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

Abstract: An ophthalmological imaging device according to embodiments comprises an objective lens, an interference optical system, an optical scanner, a controller, and an image forming part. The interference optical system divides light from a light source into measurement light and reference light, causes the measurement light to become incident on a subject's eye via the objective lens, and detects interference light between the reference light and return light of the measurement light that has exited from the subject's eye and passed through the objective lens. The optical scanner deflects the measurement light. The controller controls the optical scanner such that a position away from an optical axis of the objective lens is set as a center to deflect the measurement light. The image forming part forms an image of the subject's eye based on a detection result of the interference light by the interference optical system.