Optical compensator
Abstract
Abstract AN OPTICAL COMPENSATOR TO ENABLE CONTINUOUS AND UNINTERRUPTED MOTION OF MIVIE FILM IN A MOVIE PROJECTOR, CAMERA OR VIEWER. A ROTATING MULTI-FACED PRISM IS ORIENTED WITH ITS AXIS INCLINED TO THE DIRECTION OF THE RAYS PASSING THROUGH THE FILM AND LENSES TO ETABLISH A GREATER EFEECTIVE PRISM DIAMETER, THEREBY ENABLING USE OF A PRISM WITH FACES EQUAL IN HEIGHT TO THE HEIGHT OF THE PICTURE SECTIONS OF THE FILM. THE PRISM ENABLES THE PROJECTION OF STATIONARY IMAGES FROM A FILM ADVANCED WITH A UNIFORM SPEED, SYNCHRONIZED WITH THE ROTATIONAL SPEED OF THE PRISM SO THAT AT AL TIMES THE DEVIATION OF THE BEAM OF LIGHT CAUSED BY THE REFRACTION THROUGH THE PRISM IS EQUAL WITH AND OPPOSITE IN DIRECTION TO THE DISPLACEMENT OF THE FILM. TRIANGULAR LIGHT REFRACTING PRISMS ON OPPOSITE SIDES OF THE ROTARY PRISM PERMIT MORE COMPACT CONSTRUCTION OF THE OPTICAL COMPENSATOR.
Inventors
- 👤 Viktor Jeney
Bibliographic Details
Claims Analysis
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |