Fundus camera

Details Fundus camera Fundus camera

2006-08-04

2008-05-27

Hasan, M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S205000

Reexamination Certificate

active

07377642

ABSTRACT:
A fundus camera which includes an illumination optical system for projecting an illumination light to a fundus of a subject's eye: a photographing device for photographing the fundus; and light-receiving optical systems, which include a focus lens disposed in a light-receiving optical path for focusing the photographing devices with respect to the fundus and diopter compensation lenses disposed for being inserted into or withdrawn from the light-receiving optical path for guiding reflected light from the fundus to the photographing devices; a controlling device for determining whether a feasible focusing range of the focus lens is surpassed; and driving devices for inserting the diopter compensation lenses into or withdrawing them from the light-receiving optical path. The controlling device controls the driving devices in a defined manner.

REFERENCES:
patent: 4538889 (1985-09-01), Heine et al.
patent: 5617156 (1997-04-01), Sano et al.
patent: 6575571 (2003-06-01), Shibata
patent: 2003/0208125 (2003-11-01), Watkins
patent: 2004/0174498 (2004-09-01), Zorn et al.
patent: 07-39523 (1995-02-01), None
patent: 09-66032 (1997-03-01), None
patent: 2000-262478 (2000-09-01), None

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