Stereoscopic projecting apparatus

Details Stereoscopic projecting apparatus Stereoscopic projecting apparatus

1983-12-21

1985-10-01

Hix, L. T.

Optics: motion pictures

Stereoscopic cameras and/or projectors

Sequential recording or reproducing left-right images

352 65, 352119, G03B 3502, G03B 4106

Patent

active

045442479

ABSTRACT:
A stereoscopic projecting apparatus has a polyhedral prism and two types of polarizing filters which are arranged at the incident (or emerging) planes of the prism and which have orthogonal deflecting directions. Left and right-eye pictures are alternately formed on the consecutive frames of a cinefilm. The cinefilm is driven in such a way as to cross the projection region of light emitted from a lamp. An optical image transmitted from the cinefilm is projected onto a screen by the polyhedral prism, through a relay lens, a projection lens or the like. The left and right-eye images are deflected in directions 90.degree. apart from each other, by the polarizing filters at the respective incident or emerging planes of the prism. A viewer can stereoscopically observe the image superimposed on the screen, using polarized viewing glasses having polarized lenses deflected in the deflecting directions of the images.

REFERENCES:
patent: 2329294 (1943-09-01), Ramsdell
patent: 2476504 (1949-07-01), Maytum
patent: 2478891 (1949-08-01), Bernier
patent: 3586429 (1971-06-01), Cords, Jr.
patent: 3752568 (1973-07-01), Perreau

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