公开(公告)号：US20230337914A1

公开(公告)日：2023-10-26

申请号：US18304062

申请日：2023-04-20

Applicant: TOPCON CORPORATION

Inventor： Kouichi TSUKIHARA ,  Satoshi YAMAMOTO ,  Akira TAKAHASHI

IPC: A61B3/14

CPC classification number: A61B3/14

Abstract: An ophthalmologic apparatus includes an illumination system that is supported to be rotatable about a subject's eye with an irradiation direction of illumination light kept toward the subject's eye and an observation system that has a camera device and is arranged opposite to a position of the subject's eye across the illumination system. The camera device includes an imaging unit that receives reflection of the illumination light from the subject's eye and a light emitting unit for background illumination that is provided in the observation system and located below the subject's eye.

公开(公告)号：US20220354365A1

公开(公告)日：2022-11-10

申请号：US17872038

申请日：2022-07-25

Applicant: Topcon Corporation

Inventor： Akira TAKAHASHI ,  Kazuhiro YAMADA

IPC: A61B3/12 ,  A61B3/14 ,  A61B3/00

Abstract: An ophthalmic apparatus includes a light source, an illumination optical system, an optical scanner, an imaging optical system, and a controller. The illumination optical system is configured to generate slit-shaped illumination light using light from the light source. The optical scanner is configured to deflect the illumination light to guide the illumination light to a fundus of a subject's eye. The imaging optical system is configured to guide returning light of the illumination light from the fundus to an image sensor, the image sensor capturing light receiving result of a region on a light receiving surface corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved by the optical scanner. The controller is configured to control a deflection angle of the illumination light of the optical scanner. The optical scanner is configured to output a scanner position signal corresponding to the deflection angle of the illumination light. The image sensor is configured to start capturing the light receiving result of the returning light in synchronization with the scanner position signal.

公开(公告)号：US20220400948A1

公开(公告)日：2022-12-22

申请号：US17894175

申请日：2022-08-24

Applicant: Topcon Corporation

Inventor： Akira TAKAHASHI ,  Kazuhiro YAMADA

IPC: A61B3/12 ,  A61B3/14 ,  A61B3/00

Abstract: An ophthalmic apparatus includes an illumination optical system, an optical scanner, an imaging optical system, a controller, and an image forming unit. The illumination optical system is configured to generate slit-shaped illumination light. The optical scanner is configured to deflect the illumination light to guide the illumination light to a fundus of a subject's eye. The imaging optical system is configured to guide returning light of the illumination light from the fundus to an image sensor. The controller is configured to control the optical scanner. The image forming unit is configured to form an image of the fundus based on a light receiving result captured in an imaging target region on a light receiving surface of the image sensor. The image sensor is configured to capture the light receiving result in an opening region on the light receiving surface using a rolling shutter method, the opening region corresponding to an illumination region of the illumination light on the fundus, the illumination region being moved in a predetermined scan direction by the optical scanner. The controller is configured to control the optical scanner so that irradiation times of the returning light at a plurality of light receiving elements in the imaging target region are substantially equal.