US3304428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission line light modulator
Assignee: GTE Sylvania Inc
•
Filing: 1964-12-18
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Granted: 1967-02-14
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Charles J Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A LIGHT MODULATION SYSTEM WHICH INCLUDES A LIGHT SOURCE FOR TRANSMITTING A LIGHT BEAM THROUGH A MODULATOR, AND A POLARIZER FOR PRODUCING LINEARLY POLARIZED LIGHT OF VARIABLE AMPLITUDE, A LIGHT MODULATOR COMPRISING, A CONDUCTIVE CYLINDER HAVING A RECTANGULAR OPENING COAXIAL THEREWITH, FIRST AND SECOND ELONGATED BIREFRINGENT ELECTROOPTIC CRYSTALS DISPOSED COLLINEARLY IN LIGHT TRANSMITTING RELATIONSHIP WITHIN SAID OPENING, WITH THE OPTICAL AXES OF SAID FIRST CRYSTAL BEING DISPOSED 180 DEGREES TO THE OPTICAL AXES OF SAID SECOND CRYSTAL, A ROTATOR DISPOSED BETWEEN SAID CRYSTALS, ONLY ONE FACE OF EACH CRYSTAL BEING IN CONTACT WITH SAID CYLINDER, A FLAT ELECTRODE ATTACHED TO THE FACE OF SAID CRYSTALS OPPOSITE TO THE FACE IN CONTACT WITH SAID CYLINDER, AND COAXIAL MEANS FOR APPLYING A MODULATING POTENTIAL ACROSS SAID CYLINDER AND FLAT ELECTRODE TO THEREBY VARY SAID CRYSTAL BIREFRINGENCE.
Claim 2
Dependent Claim
135 words
IN A LIGHT MODULATION SYSTEM WHICH INCLUDES A LIGHT SOURCE FOR TRANSMITTING A LIGHT BEAM THROUGH A MODULATOR, AND A POLARIZER FOR PRODUCING LINEARLY POLARIZED LIGHT OF VARIABLE AMPLITUDE, A LIGHT MODULATOR COMPRISING, A CONDUCTIVE CYLINDER HAVING A RECTANGULAR OPENING COAXIAL THEREWITH, FIRST AND SECOND ELONGATED BIREFRINGENT ELECTROOPTIC CRYSTALS DISPOSED COLLINEARLY IN LIGHT TRANSMITTING RELATIONSHIP WITHIN SAID OPENING, WITH THE OPTICAL AXES OF SAID FIRST CRYSTAL BEING DISPOSED 180 DEGREES TO THE OPTICAL AXES OF SAID SECOND CRYSTAL, A ROTATOR DISPOSED BETWEEN SAID CRYSTALS, ONLY ONE FACE OF EACH CRYSTAL BEING IN CONTACT WITH SAID CYLINDER, A FLAT ELECTRODE ATTACHED TO THE FACE OF SAID CRYSTALS OPPOSITE TO THE FACE IN CONTACT WITH SAID CYLINDER, AND COAXIAL MEANS FOR APPLYING A MODULATING POTENTIAL ACROSS SAID CYLINDER AND FLAT ELECTRODE TO THEREBY VARY SAID CRYSTAL BIREFRINGENCE.
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |