Patent US4820015A successfully refreshed from Google Patents.
US4820015A
Expired / Lapsed
US
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Optical fiber bundle having improved terminal structure
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1987-12-29
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Granted: 1989-04-11
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Expires: 2007-12-29
Abstract
Abstract At the end of an optical fiber bundle, a reflecting member is provided to deflect the emitted light from a portion of the fibers in a direction transverse to the axis of the fiber bundle, thereby enhancing the ability of the fiber bundle to irradiate lateral surfaces while the undeflected light maintains the irradiation of a surface confronting the axial end face of the fiber bundle.
Inventors
- 👤 Masaharu Mogi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:24
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/262; G02B6/0001; G02B6/0005; G02B6/0008; G02B6/04; G02B6/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
An optical fiber bundle comprising: a first plurality of optical fibers, their end faces forming a terminal structure; a second plurality of optical fibers surrounding said first plurality of optical fibers; reflecting means surrounding said terminal structure, said reflecting means radially reflecting light emitted from said second plurality of fibers and allowing light emitted from said first plurality of fibers to pass without reflection.
Claim 2
Dependent Claim
64 words
An optical fiber bundle comprising: a first plurality of optical fibers, their end faces forming a terminal structure; a second plurality of optical fibers surrounding said first plurality of optical fibers; reflecting means surrounding said terminal structure, said reflecting means radially reflecting light emitted from said second plurality of fibers and allowing light emitted from said first plurality of fibers to pass without reflection.
Claim 3
Dependent Claim
24 words
An optical fiber bundle as claimed in claim 1, wherein said reflecting means reflects light away from the central axis of said fiber bundle.
Claim 4
Dependent Claim
34 words
An optical fiber bundle as claimed in claim 2, wherein said reflecting means is provided with a central hole therein through which light emanating from said first plurality of fibers is permitted to pass.
Claim 5
Dependent Claim
19 words
An optical fiber bundle as claimed in claim 3, wherein said first plurality of fibers extends through said hole.
Claim 6
Dependent Claim
18 words
An optical fiber bundle as claimed in claim 3, wherein said reflecting means comprises a circular-cone mirror face.
Claim 7
Dependent Claim
24 words
An optical fiber bundle as claimed in claim 1, wherein said reflecting means includes a reflecting surface formed of a multilayer dielectric film coating.
Claim 8
Dependent Claim
23 words
An optical fiber bundle as claimed in claim 1, wherein said reflecting means includes a reflecting surface formed of an aluminum evaporation film.
Claim 9
Dependent Claim
20 words
An optical fiber bundle as claimed in claim 1, wherein said reflecting means selectively reflects light of a predetermined wavelength.
Claim 10
Dependent Claim
23 words
An optical fiber bundle as claimed in claim 8, wherein said predetermined wavelength is in the range from 200 nm to 300 nm.
Claim 11
Dependent Claim
17 words
An optical fiber bundle as claimed in claim 9, wherein said predetermined wavelength is substantially 254 nm.
Claim 12
Dependent Claim
23 words
An optical fiber bundle as claimed in claim 1, wherein said reflecting means reflects light toward the central axis of said fiber bundle.
Claim 13
Dependent Claim
34 words
An optical fiber bundle as claimed in claim 11, wherein said reflecting member is provided with a central hole therein through which light emanating from said first plurality of fibers is permitted to pass.
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |