US3848983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for providing uniform exposure of a photosensitive surface
Assignee: RCA Licensing Corp
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Filing: 1971-06-23
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Granted: 1974-11-19
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Expires: 1991-06-23
Abstract
Abstract D R A W I N G 1. APPARATUS FOR APPLYING ACTINIC ENERGY OF SUBSTANTIALLY UNIFORM INTENSITY TO A PHOTOSENSITIVE SURFACE, COMPRISING: LAMP MEANS COMPRISING A SHORT, LINEAR ARC ADAPTED TO EMIT ACTINIC ENERGY, AND MEANS FOR ROTATING SAID LAMP MEANS WITH RESPECT TO THE PHOTOSENSITIVE SURFACE ABOUT AN AXIS EXTENDING SUBSTANTIALLY THROUGH THE CENTER OF SAID ARC, SAID LAMP MEANS BEING ORIENTED SUCH THAT SAID ARC IS INCLINDED TO THE AXIS OF ROTATION OF SAID LAMP MEANS IN ORDER TO DIRECT THE MOST INTENSE ENERGY FROM SAID LAMP MEAMS TOWARD PORTIONS OF THE PHOTOSENSITIVE SURFACE MORE DISTANT FROM SAID LAMP MEANS THAN OTHER PORTIONS OF THE PHOTOSENSITIVE SURFACE.
Inventors
- 👤 E Fridrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:33
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272; H01J9/2274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |