公开(公告)号：US12011225B2

公开(公告)日：2024-06-18

申请号：US17251210

申请日：2019-06-12

Applicant: Topcon Corporation

Inventor： Kazuhiro Oomori ,  Yasufumi Fukuma ,  Hitoshi Shimizu

IPC: A61B3/135 ,  A61B3/00 ,  A61B3/14

CPC classification number: A61B3/135 ,  A61B3/0008 ,  A61B3/14

Abstract: A slit lamp microscope of some embodiment examples includes an illumination system, photography system, and movement mechanism. The illumination system projects slit light onto an anterior segment of an eye. The photography system includes an optical system and image sensor. The optical system directs light coming from the anterior segment onto which the slit light is being projected. The image sensor includes a light detecting plane that receives the light directed by the optical system. The movement mechanism moves the illumination and photography systems. The subject plane along the optical axis of the illumination system, the optical system, and the light detecting plane satisfy the Scheimpflug condition. The photography system acquires a plurality of images of the anterior segment by performing repetitive photography in parallel with movement of the illumination and photography systems performed by the movement mechanism.

公开(公告)号：US10743762B2

公开(公告)日：2020-08-18

申请号：US16146144

申请日：2018-09-28

Applicant: TOPCON CORPORATION

Inventor： Hitoshi Shimizu ,  Masashi Nakajima ,  Tony H. Ko ,  Jonathan Liu ,  Yasufumi Fukuma

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

Abstract: An ophthalmologic apparatus according to the embodiments includes an OCT optical system, an alignment unit, an image forming unit, a first calculator, and a second calculator. The OCT optical system is configured to acquire OCT data of a fundus of a subject's eye by projecting measurement light onto the fundus. The alignment unit is configured to perform alignment of the OCT optical system with reference to a predetermined site of the subject's eye. The image forming unit is configured to form a tomographic image of the fundus based on the OCT data acquired by the OCT optical system which has been aligned by the alignment unit. The first calculator is configured to calculate a first tilt angle of the tomographic image. The second calculator is configured to calculate a second tilt angle of the fundus by correcting the first tilt angle based on alignment result of the OCT optical system with respect to the predetermined site by the alignment unit.