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| Number | Title | Issue Date |
| 5088812 | High-frequency movie camera A high-frequency movie camera has a sprocket wheel for supporting and transporting of a film. A rotating prism is positioned opposite to the perimeter of the sprocket wheel and is driven by the combination of a gear located on the sprocket wheel shaft and... | 02/18/1992 |
| 4611894 | Device for direct cinematographic viewing of stereoscopic images on film with a sound track Mobile refractive optical members are placed in a device between the film and stereoscopic direct viewing windows. A drive is provided for driving the film strip bearing stereoscopic images and the mobile refractive optical members at a uniformly constant... | 09/16/1986 |
| 4544247 | Stereoscopic projecting apparatus 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 alternatel... | 10/01/1985 |
| 4498745 | Device to correct the malfunction in film feed of a perforated film through a light beam A compact, easily installable light detector unit is provided to automatically correct malfunction in film feed in projection devices of the type described in U.S. Pat. No. 4,312,576. Light is projected through the perforation apertures in the film and co... | 02/12/1985 |
| 4312576 | Driving device for the elimination of the use of perforations for driving the film of movie cameras, projectors and editors with optical compensator A driving device which enables the use of films with or without perforations and the driving of a perforated film without using the perforations and sprockets in movie projectors and editors with optical compensator and steady flow of the film, and any ot... | 01/26/1982 |
| 4200363 | Film projector with sound playback or recording A motion picture film projector includes a sound head for playing back or for recording a sound track on the film. Absolute synchronism between the picture and sound is assured by the use of a single motor and common shaft to move the film past the sound ... | 04/29/1980 |
| 4199232 | Optical rectification apparatus When used for projecting or editing motion picture film the optical rectification apparatus produces a stationary image of a frame of a moving film and a succession of superimposed stationary images from successive frames of the moving film. The apparatus... | 04/22/1980 |
| 4131343 | High speed movie camera The camera has first and second sprocket rollers for passing film into and receiving film from a film gate which are positively geared together to assure uniform tension and thus avoid frame line movement. In addition, an optical prism arrangement is prov... | 12/26/1978 |
