Patent US3561842A successfully refreshed from Google Patents.
US3561842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light disrupter
Assignee: United States Department of the Army
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Filing: 1965-04-30
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Granted: 1971-02-09
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Expires: 1985-04-30
Abstract
Abstract AN OPTICAL DEVICE FOR PROTECTING A VIEWER FROM THE HARMFUL EFFECTS OF HIGH INTENSITY OPTICAL RADIATION. THIS RESULT IS ACCOMPLISHED BY BONDING A LIGHT TRANSMISSIVE OR REFLECTIVE FILM TO A ROUGHENED SUBSTRATE. THE FILM IS SLIGHTLY LIGHT ABSORPTIVE, BUT IN NO WAY INTEREFERES WITH THE OPTICAL CHARACTERISTICS OF THE DEVICE USED. WHEN HIGH INTENSITY OPTICAL RADIATION IMPINGES ON THE DEVICE, THE THERMAL EFFECTS OF THE LIGHT ABSORBED IN THE FILM DESTROY THE FILM AND EXPOSE THE ROUGHENED SUBSTRATE WHICH WILL MATERIALLY DISRUPT THE TRANSMISSION OR REFLECTION OF LIGHT.
Inventors
- 👤 Billy M Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:30
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |