US4753501A
Expired / Lapsed
US
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Fiber optic rotary switching device
Assignee: United States Department of the Air Force
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Filing: 1986-01-15
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Granted: 1988-06-28
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Expires: 2006-01-15
Abstract
Abstract A fiber optic rotary switching device having a single optical fiber rotatable between a plurality of optical fibers. The arrangement for rotating the single optical fiber is designed such that the single optical fiber flexes but does not twist with respect to an end thereof which is fixed to a light source (or, in the alternative to a light detector). As a result, the switching device switches light passing through the single optical fiber to a preselected one of the plurality of optical fibers while simultaneously preventing extraneous light from reaching the other optical fibers.
Inventors
- 👤 Stanley D. Battle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:13
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/35; G02B6/3502; G02B6/3504; G02B6/36; G02B6/3604; G02B6/354; G02B6/3544; G02B6/3548; G02B6/3586; G02B6/359
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
156 words
A fiber optic rotary switching device, comprising: means for securing a plurality of optical fibers in predetermined spaced apart relationship with respect to each other; a single optical fiber having a first end and a second end, said single optical fiber being positioned adjacent said plurality of optical fibers; rotatable means interposed between said plurality of optical fibers securing means and said single optical fiber for mounting said first end of said single optical fiber thereto for movement therewith in such a manner that said single optical fiber flexes with respect to said second end thereof yet is prevented from twisting as said rotatable optical fiber mounting means rotates; and means operably connected to said rotatable optical fiber mounting means for rotating said optical fiber mounting means to a plurality of predetermined positions in which said first end of said single optical fiber is optically aligned with a preselected one of said plurality of optical fibers.
Claim 2
Dependent Claim
156 words
A fiber optic rotary switching device, comprising: means for securing a plurality of optical fibers in predetermined spaced apart relationship with respect to each other; a single optical fiber having a first end and a second end, said single optical fiber being positioned adjacent said plurality of optical fibers; rotatable means interposed between said plurality of optical fibers securing means and said single optical fiber for mounting said first end of said single optical fiber thereto for movement therewith in such a manner that said single optical fiber flexes with respect to said second end thereof yet is prevented from twisting as said rotatable optical fiber mounting means rotates; and means operably connected to said rotatable optical fiber mounting means for rotating said optical fiber mounting means to a plurality of predetermined positions in which said first end of said single optical fiber is optically aligned with a preselected one of said plurality of optical fibers.
Claim 3
Dependent Claim
48 words
A fiber optic rotary switching device as defined in claim 1 further comprising means operably associated with said rotatable optical fiber mounting means in order to monitor the position of said single optical fiber as said rotatable optical fiber mounting means rotates to said plurality of predetermined positions.
Claim 4
Dependent Claim
56 words
A fiber optic rotary switching device as defined in claim 1 further comprising means interposed between said plurality of optical fibers securing means and said rotatable optical fiber mounting means for preventing extraneous light from entering all except said preselected one of said plurality of optical fibers which is optically aligned with said single optical fiber.
Claim 5
Dependent Claim
64 words
A fiber optic rotary switching device as defined in claim 1 wherein said rotatable optical fiber mounting means comprises a disk-like plate, means fixedly secured to said first end of said single optical fiber, and means positioned on said disk-like plate for encompassing said single optical fiber securing means in such a manner as to enable said optical fiber securing to move freely therein.
Claim 6
Dependent Claim
34 words
A fiber optic rotary switching device as defined in claim 4 wherein said encompassing means is in the form of a ferrule housing and said securing means is in the form of a ferrule.
Claim 7
Dependent Claim
65 words
A fiber optic rotary switching device as defined in claim 2 wherein said means for monitoring the position of said single optical fiber comprises a plurality of openings of preselected configurations situated adjacent the outer periphery of said rotatable optical fiber mounting means and means for detecting the presence of said plurality of openings in order to ascertain the position of said single optical fiber.
Claim 8
Dependent Claim
26 words
A fiber optic rotary switching device as defined in claim 1 wherein said means for rotating said rotatable optical fiber mounting means comprises a stepper motor.
Claim 9
Dependent Claim
26 words
A fiber optic rotary switching device as defined in claim 1 wherein said second end of said single optical fiber is connected to a light source.
Claim 10
Dependent Claim
26 words
A fiber optic rotary switching device as defined in claim 1 wherein said second end of said single optical fiber is connected to a light detector.
Claim 11
Dependent Claim
43 words
A fiber optic rotary switching device as defined in claim 3 wherein said light preventing means comprises a gasket secured to said rotatable optical fiber mounting means, said gasket having a single opening therein juxtaposed said first end of said single optical fiber.
Claim 12
Dependent Claim
52 words
A fiber optic rotary switching device as defined in claim 3 wherein said light preventing means comprises a gasket secured to said plurality of optical fibers securing means, said gasket having a plurality of openings therein, each of said openings being aligned with a respective one of said plurality of optical fibers.
Claim 13
Dependent Claim
78 words
A fiber optic rotary switching device as defined in claim 6 wherein said means for monitoring the position of said single optical fiber further comprises a light source optically aligned with at least one of said openings of said preselected configurations in order to pass said light therethrough and a light detector positioned to receive said light passing through said openings of preselected configurations, said detector providing a signal representative of said position of said single optical fiber.
Claim 14
Dependent Claim
60 words
A fiber optic rotary switching device as defined in claim 2 further comprising means interposed between said plurality of optical fibers securing means and said rotatable optical fiber mounting means for preventing extraneous light from entering all except said preselected one of said plurality of optical fibers which is optically aligned with said first end of said single optical fiber.
Claim 15
Dependent Claim
87 words
A fiber optic rotary switching device as defined in claim 4 wherein said plurality of optical fibers securing means comprises a housing having a face plate, said face plate having a plurality of spaced apart holes therein, each of said plurality of optical fibers being secured within one of said plurality of holes, respectively, and said face plate being positioned juxtaposed said disk-like plate such that each of said plurality of holes are capable of being optically aligned with said first end of said single optical fiber.
Claim 16
Dependent Claim
64 words
A fiber optic rotary switching device as defined in claim 13 wherein said rotatable optical fiber mounting means comprises a disk-like plate, means fixedly secured to said first end of said single optical fiber, and means positioned on said disk-like plate for encompassing said single optical fiber securing means in such a manner as to enable said optical fiber securing to move freely therein.
Claim 17
Dependent Claim
65 words
A fiber optic rotary switching device as defined in claim 15 wherein said means for monitoring the position of said single optical fiber comprises a plurality of openings of preselected configurations situated adjacent the outer periphery of said rotatable optical fiber mounting means and means for detecting the presence of said plurality of openings in order to ascertain the position of said single optical fiber.
Claim 18
Dependent Claim
44 words
A fiber optic rotary switching device as defined in claim 16 wherein said light preventing means comprises a gasket secured to said rotatable optical fiber mounting means, said gasket having a single opening therein juxtaposed said the first end of said single optical fiber.
Claim 19
Dependent Claim
52 words
A fiber optic rotary switching device as defined in claim 16 wherein said light preventing means comprises a gasket secured to said plurality of optical fibers securing means, said gasket having a plurality of openings therein, each of said openings being aligned with a respective one of said plurality of optical fibers.
Claim 20
Dependent Claim
78 words
A fiber optic rotary switching device as defined in claim 16 wherein said means for monitoring the position of said single optical fiber further comprises a light source optically aligned with at least one of said openings of said preselected configurations in order to pass said light therethrough and a light detector positioned to receive said light passing through said openings of preselected configurations, said detector providing a signal representative of said position of said single optical fiber.
Claim 21
Dependent Claim
26 words
A fiber optic rotary switching device as defined in claim 19 wherein said means for rotating said rotatable optical fiber mounting means comprises a stepper motor.
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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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |