Mosaic motion picture projection apparatus

• US 3,101,643 A
• Filed: 08/26/1954
• Issued: 08/27/1963
• Est. Priority Date: 08/26/1954
• Status: Expired due to Term

• Current Assignee: Russell H. Mccullough
• Original Assignee: Russell H. Mccullough
• Inventors: Mccullough, Russell H.
• Application Number:
  US03/452,323
• Time in Patent Office: 3,288 Days
• US Class Current: 352/70
• CPC Class Codes: G03B 37/00 Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe

Claims

1. IN A THEATRE INSTALLATION PROVIDED WITH A PROJECTION BOOTH ADJACENT THE REAR OF THE THEATRE AND A PANORAMIC SCREEN ADJACENT THE FRONT OF THE THEATRE AND HAVING A CENTRAL PORTION AND CURVED END PORTIONS, APPARATUS FOR PROJECTING A COMPOSITE IMAGE ONTO SAID SCREEN DERIVED FROM THREE SEPARATE FILMS EACH CONTAINING ONE COMPONENT OF THE COMPOSITE IMAGE, SAID APPARATUS COMPRISING A GROUP OF THREE PROJECTORS DISPOSED IN SAID BOOTH, SAID PROJECTORS CARRYING THE RESPECTIVE FILMS AND BEING SYMMETRICALLY ARRANGED WITH RESPECT TO SAID SCREEN, THE CENTER PROJECTOR CASTING AN IMAGE COMPONENT DIRECTLY ONTO THE CENTRAL PORTION OF SAID SCREEN, AND REFLECTORS DISPOSED COOPERATIVELY WITH RESPECT TO THE SIDE PROJECTORS TO CAST THE IMAGE COMPONENTS THEREFROM ALONG INTERSECTING PATHS ONTO THE RESPECTIVE END PORTIONS OF SAID SCREEN, WHEREBY THE OPTICAL DISTANCE BETWEEN EACH OF SAID END PORTIONS AND THE RELATED SIDE PROJECTOR EXCEEDS THAT BETWEEN THE CENTRAL PORTION OF THE SCREEN AND THE CENTER PROJECTOR, SAID SIDE PROJECTORS HAVING LONG FOCUS LENS SYSTEMS PRODUCING A RELATIVELY GREAT DEPTH OF FOCUS, THEREBY AVOIDING IMAGE DISTORTION ON SAID CURVED SIDE PORTIONS OF SAID SCREEN.