Inventors:
Ronald P. Globus - New York NY
Richard D. Globus - New York NY
Stephen E. Globus - New York NY
International Classification:
G03B 3700
Abstract:
A cycloramic image projection system in which an image as viewed from a central point, is projected in a complete circle about the viewer's position onto a drum-type screen. Included is a conical reflector arranged concentrically with the optical axis of a circular beam of light projected onto the reflector and which is turned in a radially outward direction and condensed through the picture area of a circular loop of film on a sprocket also concentric with the optical axis and which surrounds the reflector. A toroidal convex lens surrounds the film loop concentrically and serves to focus and project a 360. degree. image of the picture onto the screen, and the film loop is continuously wrapped on and off around the reflector whereby a continuously changing but temporarily stationary 360. degree. image is swept onto and off the screen. The sprocket and reflector are stationary, the toroidal lens is mounted on a pan table which rotates about the optical axis, and an arm on the table serves to pull the film from one reel, feed it through a slit in the lens, thence around the sprocket and back through the slit where it is rewound on the other reel.