Patent US3146451A successfully refreshed from Google Patents.
US3146451A
Expired / Lapsed
US
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Dielectric lens giving perfect focal points at selected distance off-axis
Assignee: LABORATORIES FOR ELECTRONICS Inc
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Filing: 1956-10-29
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Granted: 1964-08-25
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Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Sternberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:59
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN AXIALLY SYMMETRIC DIELECTRIC LENS WITH AT LEAST ONE OFF-AXIS FOCAL POINT WHOSE CROSS-SECTION IN A MERIDIONAL PLANE WHICH INCLUDES THE AXIS OF SYMMETRY IS BOUNDED BY INTERSECTING ARCS OF EVEN, EQUAL AND GREATER THAN SECOND DEGREE AND OF DIFFERENT CURVATURE, SAID LENS FOCUSING RAYS OF ENERGY EMERGING FROM SAID FOCAL POINT INTO A BEAM OF PARALLEL RAYS ORIENTED AT A SELECTED DIRECTION RELATIVE TO SAID AXIS AND CONVERGING GENERALLY PARALLEL RAYS FROM SAID DIRECTION UPON SAID FOCAL POINT.
Claim 2
Dependent Claim
79 words
AN AXIALLY SYMMETRIC DIELECTRIC LENS WITH AT LEAST ONE OFF-AXIS FOCAL POINT WHOSE CROSS-SECTION IN A MERIDIONAL PLANE WHICH INCLUDES THE AXIS OF SYMMETRY IS BOUNDED BY INTERSECTING ARCS OF EVEN, EQUAL AND GREATER THAN SECOND DEGREE AND OF DIFFERENT CURVATURE, SAID LENS FOCUSING RAYS OF ENERGY EMERGING FROM SAID FOCAL POINT INTO A BEAM OF PARALLEL RAYS ORIENTED AT A SELECTED DIRECTION RELATIVE TO SAID AXIS AND CONVERGING GENERALLY PARALLEL RAYS FROM SAID DIRECTION UPON SAID FOCAL POINT.
References Cited (Backward Citations)
GB160492A
Cited
US1946088A
Cited
US2063178A
Cited
US2380888A
Cited
US2736894A
Cited
US2547416A
Cited
GB660352A
Cited
US2637242A
Cited
US2729816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |