Continuous film movement motion picture camera
Abstract
Abstract A MOTION PICTURE CAMERA EMPLOYING CONTINUOUSLY MOVING FILM. A TWISTED ANNULAR MIRROR, MOUNTED ON THE FACE OF A DISC, IS ROTATED IN SYNCHRONISM WITH THE FILM MOVEMENT AND OSCILLATES THE OPTICAL PATH TO PRESENT, AT THE FOCAL PLANE, A SUCCESSION OF FRAMED IMAGES MOVING ACROSS THE FILM GATE AT THE SAME LINEAR SPEED AS THE FILM. A VARIABLE WIDTH FOCAL PLANE APERTURE IS PROVIDED AT THE FILM GATE FOR VARYING THE EXPOSURE OF THE FILM. A COLLIMATING OBJECTIVE IS INTERPOSED BETWEEN THE IMAGE GATE AND THE REFLECTING SURFACE AND BETWEEN THE REFLECTING SURFACE AND THE FILM GATE. ONE COMPONENT OF THE COLLIMATING OBJECTIVE IS SPLIT DIAMETRALLY ALONG A PLANE INCLUDING ITS AXIS AND THE SEVERED FACES ARE BLACKENED TO REDUCE GLARE.
Inventors
- 👤 Chester Brandon
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |