1986-06-09
1987-08-18
Griffin, Donald A.
G03B 3508
Patent
active
046873104
ABSTRACT:
A stereoscopic camera contains a photosensitive medium to be exposed by two juxtaposed images on either side of a symmetry plane, two first symmetrical lenses centered perpendicularly to the centers of images and spaced from a small stereoscopic base, and two second symmetrical lenses designed for photography with a large stereoscopic base. So as to record a stereoscopic couple always in a same position on the medium, preferably having dimensions of a standard slide, whatsoever one of three selected stereoscopic bases, the second lenses are located on second optical path sections between and perpendicular to optical axis of the first lenses and first optical path sections spaced from the large base, and the camera comprises reflecting means along axis of the first lenses for focusing incident optical beams having crossed through the second lenses. The reflecting means includes two central pivotable totally-reflecting or fixed semi-reflecting mirrors, and two fixed side mirrors. Stereoscopic couples can be taken with a mean stereoscopic base equal to the distance between one of second optical path sections and one of the first lens axis located on either side of the symmetry plane.
REFERENCES:
patent: 2771013 (1956-11-01), Mast
patent: 3018708 (1962-01-01), Rentschler
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