US5064288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scattered light multi-Brillouin gyroscope
Assignee: Charles Stark Draper Laboratory Inc
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Filing: 1990-12-07
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Granted: 1991-11-12
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Expires: 2010-12-07
Abstract
Abstract A scattered light multi-Brillouin guided wave optical gyroscope includes a coherent light source; an optical waveguide responsive to the coherent light source for generating a Brillouin, inertially stationary, synchronized fringe from two counter-rotating fringes each derived from a pair of Brillouin waves separated by twice the Brillouin shift; and means for detecting relative rotation between the Brillouin stationary synchronized fringe and the waveguide.
Inventors
- 👤 William A. Dyes
- 👤 Farhad Hakimi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:49
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/58; G01C19/64; G01C19/72
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
A scattered light multi-Brillouin guided wave gyroscope, comprising: a coherent light source; an optical waveguide, responsive to said coherent light source, for generating a Brillouin inertially stationary, synchronized fringe from two counter-rotating Brillouin moving fringes, each derived from a pair of Brillouin waves separated by twice the Brillouin shift; and means, for detecting relative rotation between the Brillouin stationary synchronized fringe and said waveguide.
Claim 2
Dependent Claim
64 words
A scattered light multi-Brillouin guided wave gyroscope, comprising: a coherent light source; an optical waveguide, responsive to said coherent light source, for generating a Brillouin inertially stationary, synchronized fringe from two counter-rotating Brillouin moving fringes, each derived from a pair of Brillouin waves separated by twice the Brillouin shift; and means, for detecting relative rotation between the Brillouin stationary synchronized fringe and said waveguide.
Claim 3
Dependent Claim
20 words
The scattered light multi-Brillouin guided wave optical gyroscope of claim 1 in which said coherent light source is a laser.
Claim 4
Dependent Claim
20 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 2 in which said laser is a solid state laser.
Claim 5
Dependent Claim
21 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 1 in which said optical waveguide is a fiber optic element.
Claim 6
Dependent Claim
29 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 1 in which said means for detecting includes indicia means proximate to and fixed with respect to said waveguide.
Claim 7
Dependent Claim
39 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 1 in which said means for detecting includes sensor means proximate the side of said waveguide for sensing a shift in said Brillouin stationary fringe relative to said waveguide.
Claim 8
Dependent Claim
38 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 1 in which said means for detecting includes a plurality of sensors disposed proximate the side of said waveguide for sensing relative motion of said Brillouin stationary fringe.
Claim 9
Dependent Claim
30 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 7 in which said sensors extend along said waveguide for monitoring a plurality of fringes of the Brillouin stationary fringe.
Claim 10
Dependent Claim
28 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 8 in which there are a number of sensors disposed adjacent each fringe pattern cycle along said waveguide.
Claim 11
Dependent Claim
20 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 7 in which said sensors include an array of CCDs.
Claim 12
Dependent Claim
35 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 1 in which said means for detecting includes means for determining the magnitude of the motion of the Brillouin stationary fringe relative to said waveguide.
Claim 13
Dependent Claim
34 words
The scattered light, multi-Brillouin guided wave optical gyroscope of claim 11 in which said means for detecting includes means for determining the direction of relative motion between said waveguide and said Brillouin stationary fringe.
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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |