US4245886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optics light switch
Assignee: International Business Machines Corp
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Filing: 1979-09-10
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Granted: 1981-01-20
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Expires: 1999-09-10
Abstract
Abstract A light switch for controlling the transmission of optical energy through optical fibers includes a hollow, light-transmitting tube extending transversely across the end of at least one light transmitting fiber. The tube contains one or more masses of light diverting material in a matrix of light-transparent fluid. The masses of light diverting material may be reflective, refractive or absorbent. Means are provided for varying the pressure along the tube to shift the masses relative to the light transmitting fiber so as to divert or pass the light to receiving fibers.
Inventors
- 👤 James S. Kolodzey
- 👤 George R. Stilwell, Jr.
- 👤 Edward C. Uberbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/004; G02B6/00; G02B6/24; G02B6/26; G02B6/35; G02B6/3538; G02B6/3564; G02B6/3568; G02B6/3574; G02B6/3586; G02B6/359
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
90 words
A fiber optics light switch for selectively diverting optical energy normally transmitted from a first optical fiber to a second, axially-aligned optical fiber, said switch including: a hollow, light transmitting tube extending transversely through a space between adjacent ends of the first and second fibers; a mass of light diverting material contained within said hollow tube in a matrix of light transmitting fluid; and means for altering the pressure within said hollow tube to move said light diverting mass to desired positions relative to the first and second optical fibers.
Claim 2
Dependent Claim
90 words
A fiber optics light switch for selectively diverting optical energy normally transmitted from a first optical fiber to a second, axially-aligned optical fiber, said switch including: a hollow, light transmitting tube extending transversely through a space between adjacent ends of the first and second fibers; a mass of light diverting material contained within said hollow tube in a matrix of light transmitting fluid; and means for altering the pressure within said hollow tube to move said light diverting mass to desired positions relative to the first and second optical fibers.
Claim 3
Dependent Claim
26 words
A fiber optics light switch as defined in claim 1 wherein said mass of light diverting material refracts optical energy transmitted from the first optical fiber.
Claim 4
Dependent Claim
28 words
A fiber optics light switch as defined in claim 2 further including a third optical fiber for receiving optical energy refracted by said mass of light diverting material.
Claim 5
Dependent Claim
73 words
A fiber optics light switch as defined in claim 1 wherein said light diverting material comprises discrete masses of reflecting and refracting material and said switch further includes a third optical fiber for receiving reflected optical energy when said reflective mass is interposed between said first and second optical fibers and a fourth optical fiber for receiving refracted optical energy when said refracting mass is interposed between said first and second optical fibers.
Claim 6
Dependent Claim
23 words
A fiber optics switch as defined in claim 4 wherein said light diverting material further includes a discrete mass of light absorbing material.
Claim 7
Dependent Claim
26 words
A fiber optics light switch as defined in claim 1 wherein said mass of light diverting material reflects optical energy transmitted from the first optical fiber.
Claim 8
Dependent Claim
28 words
A fiber optics light switch as defined in claim 6 further including a third optical fiber for receiving optical energy reflected from said mass of light diverting material.
Claim 9
Dependent Claim
26 words
A fiber optics light switch as defined in claim 7 wherein said third optical fiber is merged with said first optical fiber at a Y-shaped junction.
Claim 10
Dependent Claim
139 words
A fiber optics light switch for selectively diverting optical data signals normally transmitted in parallel from a first set of optical fibers to a second set of optical fibers, each fiber in said second set being axially aligned with a fiber in said first set, said switch including: a hollow, light-transmitting tube extending transversely through a space between adjacent ends of the first and second sets of fibers; a plurality of spaced, discrete masses of light diverting material contained within said hollow tube in a matrix of light transmitting fluid, the spacing of said discrete masses being related to the spacing between the fibers in said first and second sets; and means for altering the pressure within said hollow tube to move said spaced, discrete masses to desired positions relative to the fibers in said first and second sets.
Claim 11
Dependent Claim
139 words
A fiber optics light switch for selectively diverting optical data signals normally transmitted in parallel from a first set of optical fibers to a second set of optical fibers, each fiber in said second set being axially aligned with a fiber in said first set, said switch including: a hollow, light-transmitting tube extending transversely through a space between adjacent ends of the first and second sets of fibers; a plurality of spaced, discrete masses of light diverting material contained within said hollow tube in a matrix of light transmitting fluid, the spacing of said discrete masses being related to the spacing between the fibers in said first and second sets; and means for altering the pressure within said hollow tube to move said spaced, discrete masses to desired positions relative to the fibers in said first and second sets.
Claim 12
Dependent Claim
54 words
A fiber optics light switch as defined in claim 9 wherein at least some of said discrete masses of light diverting material are refractive and said switch further includes a third set of optical fibers for receiving data signals refracted by any such refractive masses interposed between fibers in said first and second sets.
Claim 13
Dependent Claim
52 words
A fiber optics light switch as defined in claim 9 wherein at least some of said discrete masses of light diverting material are reflective and said switch further includes a third set of optical fibers for receiving data signals reflected from reflective masses interposed between fibers in said first and second sets.
Claim 14
Dependent Claim
54 words
A fiber optics light switch as defined in claim 1 wherein at least some of said discrete masses of light diverting material are refractive and said switch further includes a fourth set of optical fibers for receiving data signals refracted by any such refractive masses interposed between fibers in said first and second sets.
Claim 15
Dependent Claim
40 words
A fiber optics light switch as defined in claims 3, 4, 7, 10 or 11 wherein the hollow tube has lenticular surfaces for concentrating optical energy to be delivered to one or more of the optical fibers in said switch.
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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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |