Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1991-01-07
1993-06-29
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351214, A61B 310
Patent
active
052238636
ABSTRACT:
A binocular stereoscopic viewing device for examining an eye having a light source and a first light guide for directing light from the light source to the eye to be illuminated. A second light guide redirects light representing the stereoscopic image of the eye. A support mechanism supports both the first light guide and second light guide and is operable for moving in directions towards and away from the eye. A tilting mechanism repositions the first light guide relative to the second light guide for varying the angle at which light from the light source is directed by the first light guide toward the eye to be illuminated.
REFERENCES:
patent: 4449797 (1984-05-01), Kocher et al.
patent: 4681413 (1987-07-01), Schmidt et al.
patent: 4684227 (1987-08-01), Schmidt et al.
patent: 4710002 (1987-12-01), Pomerantzeff et al.
patent: 4807987 (1989-02-01), Barnstable et al.
Heine Helmut A.
Rosenbusch Helmut
Schmidt Otto H.
Bovernick Rodney B.
Heine Optotecnik GmbH & Co. KG
Propper Mfg. Co., Inc.
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