Patent US1587896A successfully refreshed from Google Patents.
US3330956A
Expired / Lapsed
US
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Optical beam modulator using acoustical energy
Assignee: Raytheon Co
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Filing: 1963-06-17
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Granted: 1967-07-11
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Wade Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50; G; G02; G02F; G02F1/00; G02F1/01; G02F1/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A DEVICE FOR MODULATING A NARROW BEAM OF SUBSTANTIALLY COHERENT ELECTROMAGNETIC RADIATION PROPAGATED ALONG A PATH THERETHROUGH COMPRISING A CRYSTALLINE MATERIAL, AND MEANS FOR PRODUCING ACOUSTICAL WAVES IN SAID MATERIAL ALONG A PATH PARALLEL TO SAID PATH OF ELECTROMAGNETIC RADIATION AND HAVING WAVE FRONTS SUBSTANTIALLY PERPENDICULAR TO THE PROPAGATION PATH OF SAID ELECTROMAGNETIC RADIATION THROUGH SAID MATERIAL, SAID ACOUSTICAL WAVES PROVIDING A STOP BAND FOR SAID ELECTROMAGNETIC RADIATION WHEN THE WAVELENGTH OF SAID ACOUSTICAL WAVE IS EQUAL TO SUBSTANTIALLY ONE-HALF OF THE WAVELENGTH OF SAID ELECTROMAGNETIC RADIATION.
Claim 2
Independent Claim
87 words
A DEVICE FOR MODULATING A NARROW BEAM OF SUBSTANTIALLY COHERENT ELECTROMAGNETIC RADIATION PROPAGATED ALONG A PATH THERETHROUGH COMPRISING A CRYSTALLINE MATERIAL, AND MEANS FOR PRODUCING ACOUSTICAL WAVES IN SAID MATERIAL ALONG A PATH PARALLEL TO SAID PATH OF ELECTROMAGNETIC RADIATION AND HAVING WAVE FRONTS SUBSTANTIALLY PERPENDICULAR TO THE PROPAGATION PATH OF SAID ELECTROMAGNETIC RADIATION THROUGH SAID MATERIAL, SAID ACOUSTICAL WAVES PROVIDING A STOP BAND FOR SAID ELECTROMAGNETIC RADIATION WHEN THE WAVELENGTH OF SAID ACOUSTICAL WAVE IS EQUAL TO SUBSTANTIALLY ONE-HALF OF THE WAVELENGTH OF SAID ELECTROMAGNETIC RADIATION.
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |