US3424513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optic variable focal length lens
Assignee: Raytheon Co
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Filing: 1966-06-20
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Granted: 1969-01-28
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Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 James F Lotspeich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN ELECTRO-OPTIC VARIABLE FOCAL LENGTH LENS, COMPRISING: (A) MEANS INCLUDING A KERR EFFECT MEDIUM TRANSPARENT TO OPTICAL FREQUENCY ENERGY AND ADAPTED TO INTERCEPT A NARROW BEAM OF SUBSTANTIALLY PARALLEL AND MONOCHROMATIC LIGHT AND TRANSMIT SAID BEAM THERETHROUGH ALONG A BEAM AXIS; (B) FIRST AND SECOND PARALLEL ARRAYS OF QUADRUPOLAR CYLINDRICAL RODS ARRANGED IN TANDEM AND DISPOSED IN SAID MEDIUM, EACH OF SAID ARRAYS COMPRISING FOUR OF SAID RODS EVENLY SPACED ABOUT AND PARALLEL WITH SAID BEAM AXIS, ONE OF SAID ARRAYS BEING ROTATED ABOUT SAID AXIS 45 DEGREES WITH RESPECT TO THE OTHER OF SAID ARRAYS; AND (C) MEANS FOR PLACING A CONTROLLABLE POSITIVE AND NEGATIVE DIRECT-CURRENT CHARGE ALTERNATELY ON SAID RODS FOR CAUSING SAID BEAM TO BE CONICALLY DIVERGED DEPENDENT ON THE MAGNITUDE OF THE CHARGE PLACED ON SAID RODS.
Claim 2
Dependent Claim
131 words
AN ELECTRO-OPTIC VARIABLE FOCAL LENGTH LENS, COMPRISING: (A) MEANS INCLUDING A KERR EFFECT MEDIUM TRANSPARENT TO OPTICAL FREQUENCY ENERGY AND ADAPTED TO INTERCEPT A NARROW BEAM OF SUBSTANTIALLY PARALLEL AND MONOCHROMATIC LIGHT AND TRANSMIT SAID BEAM THERETHROUGH ALONG A BEAM AXIS; (B) FIRST AND SECOND PARALLEL ARRAYS OF QUADRUPOLAR CYLINDRICAL RODS ARRANGED IN TANDEM AND DISPOSED IN SAID MEDIUM, EACH OF SAID ARRAYS COMPRISING FOUR OF SAID RODS EVENLY SPACED ABOUT AND PARALLEL WITH SAID BEAM AXIS, ONE OF SAID ARRAYS BEING ROTATED ABOUT SAID AXIS 45 DEGREES WITH RESPECT TO THE OTHER OF SAID ARRAYS; AND (C) MEANS FOR PLACING A CONTROLLABLE POSITIVE AND NEGATIVE DIRECT-CURRENT CHARGE ALTERNATELY ON SAID RODS FOR CAUSING SAID BEAM TO BE CONICALLY DIVERGED DEPENDENT ON THE MAGNITUDE OF THE CHARGE PLACED ON SAID RODS.
References Cited (Backward Citations)
US1923891A
Cited
US2836652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |