US3231742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulation optical receiver system
Assignee: Individual
•
Filing: 1962-11-14
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Granted: 1966-01-25
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Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 Anthony E Siegman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:16
CPC Classifications
G; G02; G02F; G02F2/00; G02F2/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A FREQUENCY MODULATED LIGHT SIGNAL RECEIVER SYSTEM FOR DEMODULATING SIGNALS IN A RECEIVED BEAM HAVING FREQUENCY COMPONENTS IN A PREDETERMINED RANGE, SAID SYSTEM COMPRISING: A PHOTOEMISSIVE CATHODE FOR EMITTING A STEAM OF ELECTRONS ALONG A PREDETERMINED DIRECTION AND HAVING AN EMISSIVE SURFACE WITH A WIDTH DIMENSION TRANSVERSE TO SAID PREDETERMINED DIRECTION; AN OPTICAL DISPERSING ELEMENT INTERPOSED IN THE PATH OF SAID RECEIVED BEAM AND OPTICALLY COUPLED TO SAID CATHODE, SAID ELEMENT BEING OF THE CHARACTER AND BEING DISPOSED TO IMPRESS SAID FREQUENCY COMPONENTS OF SAID RECEIVED BEAM UPON SAID EMISSIVE SURFACE AT PREDETERMINED DISPLACEMENTS ALONG SAID WIDTH DIMENSIONS CORRESPONDING TO THE MAGNITUDE OF FREQUENCY OF EACH OF SAID COMPONENTS AND THEREBY SPECIALLY MODULATING SAID STREAM WITH DIFFERENT INTENSITIES AT DIFFERENT POSITIONS ALONG THE DIRECTION OF SAID WIDTH DIMENSION; AND TRANSVERSE WAVE BEAM COUPLING MEANS DISPOSED IN ELECTROMAGNETIC MICROWAVE INTERACTION RELATIONSHIP WITH SAID ELECTRON STREAM FOR DEMODULATINGH SAID ELECTRON STREAM.
Claim 2
Dependent Claim
149 words
A FREQUENCY MODULATED LIGHT SIGNAL RECEIVER SYSTEM FOR DEMODULATING SIGNALS IN A RECEIVED BEAM HAVING FREQUENCY COMPONENTS IN A PREDETERMINED RANGE, SAID SYSTEM COMPRISING: A PHOTOEMISSIVE CATHODE FOR EMITTING A STEAM OF ELECTRONS ALONG A PREDETERMINED DIRECTION AND HAVING AN EMISSIVE SURFACE WITH A WIDTH DIMENSION TRANSVERSE TO SAID PREDETERMINED DIRECTION; AN OPTICAL DISPERSING ELEMENT INTERPOSED IN THE PATH OF SAID RECEIVED BEAM AND OPTICALLY COUPLED TO SAID CATHODE, SAID ELEMENT BEING OF THE CHARACTER AND BEING DISPOSED TO IMPRESS SAID FREQUENCY COMPONENTS OF SAID RECEIVED BEAM UPON SAID EMISSIVE SURFACE AT PREDETERMINED DISPLACEMENTS ALONG SAID WIDTH DIMENSIONS CORRESPONDING TO THE MAGNITUDE OF FREQUENCY OF EACH OF SAID COMPONENTS AND THEREBY SPECIALLY MODULATING SAID STREAM WITH DIFFERENT INTENSITIES AT DIFFERENT POSITIONS ALONG THE DIRECTION OF SAID WIDTH DIMENSION; AND TRANSVERSE WAVE BEAM COUPLING MEANS DISPOSED IN ELECTROMAGNETIC MICROWAVE INTERACTION RELATIONSHIP WITH SAID ELECTRON STREAM FOR DEMODULATINGH SAID ELECTRON STREAM.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |