公开(公告)号：US20200288974A1

公开(公告)日：2020-09-17

申请号：US16780123

申请日：2020-02-03

Applicant: NIDEK CO., LTD.

Inventor： Shinya Iwata ,  Megumi Tsuchiya ,  Yukihiro Higuchi

IPC: A61B3/12 ,  A61B3/10

Abstract: A fundus imaging apparatus includes an imaging optical system that irradiates a fundus of a subject eye with light through an objective lens system, and enables to capture a fundus image of the subject eye based on return light from the subject eye, and a diopter correction unit that includes an optical element disposed on an optical path of the imaging optical system and a drive unit driving the optical element, and performs a diopter correction with a diopter value corresponding to a drive amount of the optical element. A drive range of the optical element in the diopter correction unit is set to avoid a specific range being a range in which an artifact caused by reflection light in the objective lens system is maximized.

公开(公告)号：US11510568B2

公开(公告)日：2022-11-29

申请号：US16780123

申请日：2020-02-03

Applicant: NIDEK CO., LTD.

Inventor： Shinya Iwata ,  Megumi Tsuchiya ,  Yukihiro Higuchi

IPC: A61B3/12 ,  A61B3/10

Abstract: A fundus imaging apparatus includes an imaging optical system that irradiates a fundus of a subject eye with light through an objective lens system, and enables to capture a fundus image of the subject eye based on return light from the subject eye, and a diopter correction unit that includes an optical element disposed on an optical path of the imaging optical system and a drive unit driving the optical element, and performs a diopter correction with a diopter value corresponding to a drive amount of the optical element. A drive range of the optical element in the diopter correction unit is set to avoid a specific range being a range in which an artifact caused by reflection light in the objective lens system is maximized.