Patent US3308394A successfully refreshed from Google Patents.
US3308394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical resonant cavities
Assignee: American Optical Corp
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Filing: 1960-11-02
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Granted: 1967-03-07
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Snitzer Elias
- 👤 Osterberg Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/26; G02; G02B; G02B6/00; G02B6/10; G02F; G02F1/00; G02F1/01; G02F1/21; G02F1/225; G02F1/2252; H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/10; H01S3/105; G02F1/213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A TUNABLE OPTICAL RESONANT CAVITY COMPRISING, IN COMBINATION, A THIN ELONGATED ELEMENT OF TRANSPARENT MATERIAL OF PREDETERMINED LENGTH, SAID ELEMENT HAVING A MEAN DIAMETER WHICH IS NOT GREATER THAN 25 TIMES THE LONGEST WAVELENTH OF THE OPTICAL ENERGY TO WHICH SAID CAVITY IS RESONANT, SAID ELEMENT HAVING AN INDEX OF REFRACTION GREATER THAN THE INDEX OF REFRACTION OF THE MEDIUM SURROUNDING SAID ELEMENT, SAID ELEMENT AND SAID MEDIUM COOPERATING TO DEFINE A CLOSED OPTICAL WAVEGUIDE, MEANS FORMING REFLECTIVE COATINGS ON THE ENDS OF SAID ELEMENT, AT LEAST ONE OF SAID COATINGS PARTIALLY REFLECTING AND PARTIALLY TRANSMITTING OPTICAL ENERGY TO WHICH SAID CAVITY IS RESONANT, AND MEANS FOR VARYING A CONDITION AFFECTING THE OPTICAL LENGTH OF SAID CAVITY TO VARY ITS LENGTH FROM SAID PREDETERMINED LENGTH.
Claim 2
Dependent Claim
125 words
A TUNABLE OPTICAL RESONANT CAVITY COMPRISING, IN COMBINATION, A THIN ELONGATED ELEMENT OF TRANSPARENT MATERIAL OF PREDETERMINED LENGTH, SAID ELEMENT HAVING A MEAN DIAMETER WHICH IS NOT GREATER THAN 25 TIMES THE LONGEST WAVELENTH OF THE OPTICAL ENERGY TO WHICH SAID CAVITY IS RESONANT, SAID ELEMENT HAVING AN INDEX OF REFRACTION GREATER THAN THE INDEX OF REFRACTION OF THE MEDIUM SURROUNDING SAID ELEMENT, SAID ELEMENT AND SAID MEDIUM COOPERATING TO DEFINE A CLOSED OPTICAL WAVEGUIDE, MEANS FORMING REFLECTIVE COATINGS ON THE ENDS OF SAID ELEMENT, AT LEAST ONE OF SAID COATINGS PARTIALLY REFLECTING AND PARTIALLY TRANSMITTING OPTICAL ENERGY TO WHICH SAID CAVITY IS RESONANT, AND MEANS FOR VARYING A CONDITION AFFECTING THE OPTICAL LENGTH OF SAID CAVITY TO VARY ITS LENGTH FROM SAID PREDETERMINED LENGTH.
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |