Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1991-10-21
1993-05-25
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351205, 351221, A61B 314
Patent
active
052144542
ABSTRACT:
A fundus camera having an illuminating optical system is provided with illuminating diaphragms for non-fluorescent photography and fluorescent photography. The illuminating diaphragm for non-fluorescent photography and the illuminating diaphragms for fluorescent photography respectively have light transmitting regions of different surface areas.
REFERENCES:
patent: 4799783 (1989-01-01), Takahashi et al.
Bovernick Rodney B.
Dang Hung Xuan
Kabushiki Kaisha Topcon
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