Optics: motion pictures – Removable film strip magazine type
Patent
1979-02-08
1980-12-23
Gellner, Michael L.
Optics: motion pictures
Removable film strip magazine type
352 60, G03B 3500
Patent
active
042407311
ABSTRACT:
A stereoscopic camera has two lens-and-mirror trains for imposing a pair of stereoscopic images in side-by-side relationship on a common photographic film. Each optical train comprises a pair of oblique mirrors and plural lens elements. However, the final or objective lens of one train is at a right angle to that of the other train, one objective lens having its axis parallel to the lines of sight and the other objective lens having its axis perpendicular thereto, this latter lens preceding its final oblique mirror and the former lens following the final oblique mirror, in their respective optical trains. In this way, the depth of the camera, parallel to the lines of sight, is substantially reduced and the sizes of the mirrors are substantially reduced. Stopping diaphragms are provided for each optical train, at right angle to each other, and mounted on a common block that is movable past the optical axes to permit the selection of the diaphragms of different sizes.
REFERENCES:
patent: 2240398 (1941-04-01), Huitt
patent: 3063334 (1962-11-01), Smith
patent: 3551036 (1970-12-01), Bielusici
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