Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding
Patent
1978-10-03
1981-02-03
Sacher, Paul A.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Folding
350 35, 351 16, A61B 314, G02B 2122
Patent
active
042485053
ABSTRACT:
An ophthalmological instrument for stereoscopic examination of the fundus or retina of the eye of a patient, and documentation thereof, as by photographing it. The instrument provides an observation light beam path, and an illumination light beam path. In the observation beam path are various optical elements for producing an image of the fundus at appropriate places, and a beam splitter to split the beam into two parts for stereoscopic viewing. A movable deflector can be shifted to a position to deflect at least part of the beam to a camera or other documentation device.
REFERENCES:
patent: 3259039 (1966-07-01), Ohajima
patent: 3533342 (1970-10-01), McMillin
patent: 3549250 (1970-12-01), Pantenburg
patent: 3915564 (1975-10-01), Zeiss
patent: 4015898 (1977-04-01), Shirmer
Muchel Franz
Stern Ekkehard
Summerer Gunther
Carl Zeiss Stiftung
Sacher Paul A.
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