US5172271A
Expired / Lapsed
US
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Graded index lens structure suitable for optical fiber termination
Assignee: JDS Fitel Inc
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Filing: 1991-11-26
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Granted: 1992-12-15
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Expires: 2011-11-26
Abstract
Abstract A graded index lens having one end-surface thereof adapted for connection to an optical fiber or the like characterized by an axially asymmetrically tapered end portion terminating in the end-surface.
Inventors
- 👤 William J. Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:06
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/32; G02B6/327; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4206
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
27 words
A graded index lens having one end-surface thereof adapted for connection to an optical fiber characterized by an axially asymmetrically tapered end portion terminating in said end-surface.
Claim 2
Dependent Claim
27 words
A graded index lens having one end-surface thereof adapted for connection to an optical fiber characterized by an axially asymmetrically tapered end portion terminating in said end-surface.
Claim 3
Dependent Claim
26 words
The graded index lens as defined in claim 1, wherein said end-surface inclined by an angle smaller than 90 degrees with respect to a lens axis.
Claim 4
Dependent Claim
18 words
The graded index lens as defined in claim 1, wherein said end-surface being perpendicular to the lens axis.
Claim 5
Dependent Claim
21 words
The graded index lens as defined in claim 1, wherein said end-surface being a circumference which is circular, oval or elliptical.
Claim 6
Dependent Claim
21 words
The graded index lens as defined in claim 2, wherein said end-surface being a circumference which is circular, oval or elliptical.
Claim 7
Dependent Claim
21 words
The graded index lens as defined in claim 3, wherein said end-surface being a circumference with is circular, oval or elliptical.
Claim 8
Dependent Claim
34 words
The graded index lens as defined in claim 1, wherein said axially asymmetrically tapered end portion being an end-surface inclined with respect to a lens axis by an angle substantially smaller than 90 degrees.
Claim 9
Dependent Claim
31 words
The graded index lens as defined in claim 7, wherein the other end terminates in a surface inclined with respect to the lens axis by an angle smaller than 90 degrees.
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) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |