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Fundus photographing apparatus
专利权人:
Takahiro Nanbara
发明人:
Takahiro Nanbara
申请号:
US13596350
公开号:
US08851672B2
申请日:
2012.08.28
申请国别(地区):
US
年份:
2014
代理人:
摘要:
A fundus photographing apparatus includes: an illuminating optical system for illuminating a fundus of an examinees 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 examinees 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.
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