US3273445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optical face plates having different numerical aperture values in two different directions
Assignee: American Optical Corp
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Filing: 1962-10-22
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Granted: 1966-09-20
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Walter P Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/24; G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/08; H01J29/86; H01J29/89; H01J29/892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN ELONGATED LIGHT-TRANSMITTING OPTICAL FIBER COMPRISING A CORE FORMED OF A TRANSPARENT MATERIAL OF A PREDETERMINED REFRACTIVE INDEX AND OF PREDETERMINED GEOMETRIC CROSS-SECTIONAL SHAPE HAVING A PLURALITY OF PAIRS OF ELONGATED SIDE WALL SURFACE PORTIONS FORMED THEREON, AND WITH THE SURFACE PORTIONS OF EACH PAIR BEING DISPOSED IN OPPOSED FACING RELATION TO EACH OTHER, A THIN ELONGATED LAYER OF CLADDING MATERIAL FORMED UPON EACH SURFACE PORTION, AND ALL OF SAID ELONGATED LAYERS BEING ARRANGED TO SURROUND AND ENCLOSE SAID CORE, THE LAYERS OF CLADDING MATERIAL UPON EACH PAIR OF OPPOSED SURFACE PORTIONS HAVING A LOWER REFRACTIVE INDEX THAN THAT OF SAID CORE, AND THE OPPOSED LAYERS ON ONE OF SAID PAIRS OF SURFACE PORTIONS BEING A LOWER REFRACTIVE INDEX THAN THE REFRACTIVE INDEX OF THE OPPOSED LAYERS ON ANOTHER OF SAID PAIRS.
Claim 2
Dependent Claim
132 words
AN ELONGATED LIGHT-TRANSMITTING OPTICAL FIBER COMPRISING A CORE FORMED OF A TRANSPARENT MATERIAL OF A PREDETERMINED REFRACTIVE INDEX AND OF PREDETERMINED GEOMETRIC CROSS-SECTIONAL SHAPE HAVING A PLURALITY OF PAIRS OF ELONGATED SIDE WALL SURFACE PORTIONS FORMED THEREON, AND WITH THE SURFACE PORTIONS OF EACH PAIR BEING DISPOSED IN OPPOSED FACING RELATION TO EACH OTHER, A THIN ELONGATED LAYER OF CLADDING MATERIAL FORMED UPON EACH SURFACE PORTION, AND ALL OF SAID ELONGATED LAYERS BEING ARRANGED TO SURROUND AND ENCLOSE SAID CORE, THE LAYERS OF CLADDING MATERIAL UPON EACH PAIR OF OPPOSED SURFACE PORTIONS HAVING A LOWER REFRACTIVE INDEX THAN THAT OF SAID CORE, AND THE OPPOSED LAYERS ON ONE OF SAID PAIRS OF SURFACE PORTIONS BEING A LOWER REFRACTIVE INDEX THAN THE REFRACTIVE INDEX OF THE OPPOSED LAYERS ON ANOTHER OF SAID PAIRS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |