Invention Grant
- Patent Title: Fundus photographing apparatus
- Patent Title (中): 眼底摄影设备
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Application No.: US13596350Application Date: 2012-08-28
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Publication No.: US08851672B2Publication Date: 2014-10-07
- Inventor: Takahiro Nanbara
- Applicant: Takahiro Nanbara
- Applicant Address: JP Aichi
- Assignee: Nidek Co., Ltd.
- Current Assignee: Nidek Co., Ltd.
- Current Assignee Address: JP Aichi
- Agency: Rankin, Hill & Clark LLP
- Priority: JP2011-189334 20110831
- Main IPC: A61B3/14
- IPC: A61B3/14 ; A61B3/10 ; A61B3/02

Abstract:
A fundus photographing apparatus includes: an illuminating optical system for illuminating a fundus of an examinee's eye; a focus target presenting unit for projecting a focus target for focusing to the fundus via an objective lens; a photographing element for photographing the fundus to obtain a fundus image and detect the focus target; a diaphragm in a position substantially conjugate with a pupil of the examinee's eye with the objective lens therebetween; a focusing lens moved along an optical axis to focus on the fundus; and a controlling device for moving the focusing lens along the optical axis based on a result of detection of the focus target by the photographing element with a position where a first distance from the diaphragm to the fundus is substantially equal to a second distance from an image of the diaphragm to the fundus image as a reference position of the focusing lens.
Public/Granted literature
- US20130050646A1 FUNDUS PHOTOGRAPHING APPARATUS Public/Granted day:2013-02-28
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