US5090018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed laser system for visually detecting faults in optical waveguides
Assignee: Siemens AG
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Filing: 1990-08-02
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Granted: 1992-02-18
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Expires: 2010-08-02
Abstract
Abstract A pulsed laser system for visually detecting faults in optical waveguides. A laser operating at a duty cycle of less than fifty percent (50%) produces visible light pulses at a frequency sufficiently high as to visually appear to be continuous. The laser is coupled to an optical waveguide by a connector. Faults are located due to a visible glow at a defective point on the waveguide.
Inventors
- 👤 Cary R. Murphy
- 👤 Mark K. Bridges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:05
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/30; G01M11/35
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
50 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range at a frequency sufficiently high as to visually appear to be continuous.
Claim 2
Dependent Claim
50 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range at a frequency sufficiently high as to visually appear to be continuous.
Claim 3
Dependent Claim
23 words
A pulsed laser system as recited in claim 1, wherein the laser output is at a duty cycle of less than fifty percent.
Claim 4
Dependent Claim
23 words
A pulsed laser system as recited in claim 2, wherein the laser output is at a duty cycle of less than twenty percent.
Claim 5
Dependent Claim
23 words
A pulsed laser system as recited in claim 3, wherein the laser output is at a duty cycle not greater than ten percent.
Claim 6
Dependent Claim
45 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range at a frequency greater than two Hertz.
Claim 7
Dependent Claim
45 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range at a frequency greater than two Hertz.
Claim 8
Dependent Claim
23 words
A pulsed laser system as recited in claim 5, wherein the laser output is at a duty cycle of less than fifty percent.
Claim 9
Dependent Claim
23 words
A pulsed laser system as recited in claim 6, wherein the laser output is at a duty cycle of less than twenty percent.
Claim 10
Dependent Claim
23 words
A pulsed laser system as recited in claim 7, wherein the laser output is at a duty cycle not greater than ten percent.
Claim 11
Dependent Claim
50 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range, said laser output at a duty cycle of less than fifty percent.
Claim 12
Dependent Claim
50 words
A pulsed laser fault location system, comprising: an optical waveguide having faults therein from which faults light pulses may escape; and, a laser optically coupled to said optical waveguide, said laser producing light pulses in the visible range, said laser output at a duty cycle of less than fifty percent.
Claim 13
Dependent Claim
23 words
A pulsed laser system as recited in claim 9, wherein said laser output is at a duty cycle of less than twenty percent.
Claim 14
Dependent Claim
23 words
A pulsed laser system as recited in claim 10, wherein said laser output is at a duty cycle not greater than ten percent.
Claim 15
Dependent Claim
21 words
A pulsed laser system as recited in claim 11, wherein said laser output is at a frequency greater than two Hertz.
Claim 16
Dependent Claim
21 words
A pulsed laser system as recited in claim 10, wherein said laser output is at a frequency greater than two Hertz.
Claim 17
Dependent Claim
21 words
A pulsed laser system as recited in claim 9, wherein the laser output is at a frequency greater than two Hertz.
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) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |