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Patent US3256500A successfully refreshed from Google Patents.
US3256500A
Expired / Lapsed
US
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Optical magnetometers
Assignee: CAE Electronics Ltd
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Filing: 1963-01-07
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Granted: 1966-06-14
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 James T Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:12
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/24; G01R33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
IN AN OPTICAL MAGNETOMETER, THE COMBINATION COMPRISING: MEANS FORMING A PAIR OF OPTICAL ABSORPTION VOLUMES, EACH CONTAINING AN ASSEMBLAGE OF QUANTUM SYSTEMS WHICH MAY PRECESS IN A UNIDIRECTIONAL MAGNETIC FIELD AT A RATE WHICH IS DETERMINED BY THE INTENSITY OF SAID FIELD, SAID QUANTUM SYSTEMS BEING SPLIT INTO MAGNETIC SUBLEVELS BY SAID FIELD AND EXHIBITING A TIME-VARYING ALIGMENT AMONG SAID SUBLEVELS AT SAID PRECESSION RATE, MEANS FOR DIRECTING OPTICAL RADIATION TO SAID ABSORPTION VOLUMES WITH SUCH SPECTRAL CHARACTERISTICS AS TO BE DIFFERENTIALLY ABSORBED WITH RESPECT TO THE MAGNETIC SUBLEVELS OF SAID QUANTUM SYSTEMS WHEREBY THE INTENSITY OF THE RADIATION RECEIVED FROM EACH VOLUME IS INTENSITY MODULATED AT A FREQUENCY WHICH DEPENDS ON SAID PRECESSION RATE, MEANS FOR CONVERTING THE INTENSITY MODULATION OF THE RADIATION RECEIVED FROM SAID ABSORPTION VOLUMES INTO ALTERNATING ELECTRICAL SIGNALS, AND MEANS FOR CROSS-COUPLING THE ALTERNATING ELECTRICAL SIGNALS DERIVED FROM EACH ABSORPTION VOLUME TO THE OTHER ABSORPTION VOLUME IN THE FORM OF AN ALTERNATING MAGNETIC FIELD WHICH PRODUCES FORCED PRECESSIONS OF SAID QUANTUM SYSTEMS THEREBY EFFECTING SELF-SUSTAINED OSCILLATION OF SAID ELECTRICAL SIGNALS AT A FREQUENCY DETERMINED BY THE INTENSITY OF SAID UNIDIRECTIONAL FIELD.
Claim 2
Dependent Claim
186 words
IN AN OPTICAL MAGNETOMETER, THE COMBINATION COMPRISING: MEANS FORMING A PAIR OF OPTICAL ABSORPTION VOLUMES, EACH CONTAINING AN ASSEMBLAGE OF QUANTUM SYSTEMS WHICH MAY PRECESS IN A UNIDIRECTIONAL MAGNETIC FIELD AT A RATE WHICH IS DETERMINED BY THE INTENSITY OF SAID FIELD, SAID QUANTUM SYSTEMS BEING SPLIT INTO MAGNETIC SUBLEVELS BY SAID FIELD AND EXHIBITING A TIME-VARYING ALIGMENT AMONG SAID SUBLEVELS AT SAID PRECESSION RATE, MEANS FOR DIRECTING OPTICAL RADIATION TO SAID ABSORPTION VOLUMES WITH SUCH SPECTRAL CHARACTERISTICS AS TO BE DIFFERENTIALLY ABSORBED WITH RESPECT TO THE MAGNETIC SUBLEVELS OF SAID QUANTUM SYSTEMS WHEREBY THE INTENSITY OF THE RADIATION RECEIVED FROM EACH VOLUME IS INTENSITY MODULATED AT A FREQUENCY WHICH DEPENDS ON SAID PRECESSION RATE, MEANS FOR CONVERTING THE INTENSITY MODULATION OF THE RADIATION RECEIVED FROM SAID ABSORPTION VOLUMES INTO ALTERNATING ELECTRICAL SIGNALS, AND MEANS FOR CROSS-COUPLING THE ALTERNATING ELECTRICAL SIGNALS DERIVED FROM EACH ABSORPTION VOLUME TO THE OTHER ABSORPTION VOLUME IN THE FORM OF AN ALTERNATING MAGNETIC FIELD WHICH PRODUCES FORCED PRECESSIONS OF SAID QUANTUM SYSTEMS THEREBY EFFECTING SELF-SUSTAINED OSCILLATION OF SAID ELECTRICAL SIGNALS AT A FREQUENCY DETERMINED BY THE INTENSITY OF SAID UNIDIRECTIONAL FIELD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |