Continuous film feed apparatus

Details Continuous film feed apparatus Continuous film feed apparatus

1975-03-03

1976-11-02

Hayes, Monroe H.

Optics: motion pictures

Optical rectifier type

Reflector angularly displaced about fixed axis

178 15, G03B 4110

Patent

active

039893634

ABSTRACT:
An apparatus for moving film through a projection or camera system utilizing continuous, uninterrupted motion of the film. Conventional sprocketed film is moved from reel to reel at a constant velocity. The image of the film frame passing over the film projection gate is projected upon an oscillating mirror mechanism which is driven synchronously with the motive force for the film strip. The oscillating mirror pivots at an angular velocity which stabilizes the image of the film frame, the mirror returning to its initial position during a small interval of the total time the film frame passes over the projection gate. A shutter periodically interrupts the light passing through the film frame to allow the mirror to return to its initial position where it becomes synchronized with the succeeding frame image. Synchronization of mirror and frame is achieved by driving a shaft in alignment with the reflective mirror in a manner which will insure stabilization of the image as well as permitting the mirror to return to its initial state during the time in which the film frame passes over the projection gate.

REFERENCES:
patent: 1875193 (1932-08-01), Ruhnau
patent: 1955320 (1934-04-01), Batchelor
patent: 2215464 (1940-09-01), Dorgelo
patent: 2227054 (1940-12-01), Bedford
patent: 2305838 (1942-12-01), Beer

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