Fundus camera

Details Fundus camera Fundus camera

2011-08-30

2011-08-30

Dang, Hung X (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

Reexamination Certificate

active

08007104

ABSTRACT:
A fundus camera includes an observation photographing unit having a focusing lens to perform focusing of an imaging unit on a fundus of a subject's eye, a lens driving unit configured to drive the focusing lens in an optical axis direction, and a focusing control unit configured to calculate a focusing evaluation value based on image information of a predetermined area of a fundus image captured by the observation photographing unit, and drive the focusing lens based on the focusing evaluation value, thereby performing focusing, wherein the focusing control unit moves the focusing lens from a previous photographing position of the focusing lens by a predetermined moving amount, and then performs the focusing.

REFERENCES:
patent: 7641338 (2010-01-01), Fukuma et al.
patent: 7828437 (2010-11-01), Kikawa et al.
patent: 5-199998 (1993-08-01), None
patent: 4138101 (2008-08-01), None

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