公开(公告)号：EP4119034A1

公开(公告)日：2023-01-18

申请号：EP21767623.8

申请日：2021-03-05

Applicant: TOPCON CORPORATION

Inventor： TAKAHASHI Akira ,  YAMADA Kazuhiro

IPC: A61B3/12 ,  A61B3/14

Abstract: This ophthalmic device includes an illumination optical system, an optical scanner, an imaging optical system, a control unit, and an image forming unit. The illumination optical system generates slit-shaped illumination light. The optical scanner deflects and guides the illumination light to the fundus of an eye being examined. The imaging optical system guides return light of the illumination light from the fundus to an image sensor. The control unit controls the optical scanner. The image forming unit forms an image of the fundus on the basis of a light reception result captured in an imaging object region of a light-receiving surface of the image sensor. The image sensor is configured to capture the light reception result by a rolling shutter system in an opening region of the light-receiving surface that corresponds to a region of the fundus that is illuminated by the illumination light, moved in a predetermined scanning direction by the optical scanner. The control unit controls the optical scanner so that the times of irradiation by return light on a plurality of light-receiving elements in the imaging object region are substantially equal.

公开(公告)号：EP4119033A1

公开(公告)日：2023-01-18

申请号：EP21766851.6

申请日：2021-03-05

Applicant: TOPCON CORPORATION

Inventor： TAKAHASHI Akira ,  YAMADA Kazuhiro

IPC: A61B3/12 ,  A61B3/14

Abstract: This ophthalmic device includes a light source, an illumination optical system, an optical scanner, an imaging optical system, and a control unit. The illumination optical system generates slit-shaped illumination light using light from the light source. The optical scanner deflects and guides the illumination light to the fundus of an eye being examined. The imaging optical system guides return light of the illumination light from the fundus to an image sensor that takes in, by means of a rolling shutter method, a light reception result in a region of a light receiving surface corresponding to a region in the fundus illuminated by the illumination light, which is moved by the optical scanner. The control unit controls the angle at which the illumination light is deflected by the optical scanner. The optical scanner outputs a scanner position signal corresponding to the angle at which the illumination light is deflected. The image sensor starts to take in the light reception result of the return light in synchronization with the scanner position signal.