US4639130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inspection apparatus for optical fiber assembly
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-06-27
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Granted: 1987-01-27
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Expires: 2005-06-27
Abstract
Abstract Provided is an apparatus for inspecting an optical fiber assembly through measuring irregularities in transmission loss of optical fibers which constitute said optical fiber assembly. The apparatus includes a base, a first slider block slidably laid on the base, means attached to the first slider block and adapted to grip both ends of the optical fiber assembly, a feed mechanism for feeding the first slider block by sliding the same on the base, a frame member secured to the base, a second slider block carried by the frame member, a light projector carried by the second slider block and adapted to irradiate a light beam onto the light receiving end of one of the optical fibers, a light receiver for receiving a light beam from the light emitting end of the one of the optical fibers and a light stop disposed in the light projector and adapted to stop the light beam irradiated by the light projector so that the light beam may be irradiated, exclusively, onto the light receiving end of only one of the optical fiber and within the same.
Inventors
- 👤 Kazuyoshi Koike
- 👤 Yasuteru Tahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:24
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/30; G01M11/33
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
211 words
An apparatus for inspecting an optical fiber assembly composed of a plurality of optical fibers having light receiving and emitting ends, in such a manner as to measure irregularities in transmission loss of said optical fibers, comprising: a base; a first slider block slidably laid on said base; gripping means attached to said first slider block and adapted to grip both ends of said optical fiber assembly in a manner that they are substantially flush with each other; a feed mechanism for feeding said first slider block by sliding the same on said base; a frame member secured to said base; a second block carried by said frame member; a light projector carried by said second slider block, and adapted to irradiate a light beam onto said light receiving end of one of said optical fibers; a light receiver carried by said second slider block and adapted to receive a light beam from said light emitting end of said one of said optical fibers; and a light stop mechanism disposed in said light projector and adapted to stop said light beam irradiated by said light projector, so that said light beam may be irradiated, exclusively, onto said light receiving end of only one of said optical fibers and within the same.
Claim 2
Independent Claim
211 words
An apparatus for inspecting an optical fiber assembly composed of a plurality of optical fibers having light receiving and emitting ends, in such a manner as to measure irregularities in transmission loss of said optical fibers, comprising: a base; a first slider block slidably laid on said base; gripping means attached to said first slider block and adapted to grip both ends of said optical fiber assembly in a manner that they are substantially flush with each other; a feed mechanism for feeding said first slider block by sliding the same on said base; a frame member secured to said base; a second block carried by said frame member; a light projector carried by said second slider block, and adapted to irradiate a light beam onto said light receiving end of one of said optical fibers; a light receiver carried by said second slider block and adapted to receive a light beam from said light emitting end of said one of said optical fibers; and a light stop mechanism disposed in said light projector and adapted to stop said light beam irradiated by said light projector, so that said light beam may be irradiated, exclusively, onto said light receiving end of only one of said optical fibers and within the same.
Claim 3
Dependent Claim
30 words
An apparatus as set forth in claim 1, wherein said first slider block carries a light shield plate for preventing stray light reaching said light receiver from said light projector.
Claim 4
Dependent Claim
19 words
An apparatus as set forth in claim 1, wherein said both ends are gripped in substantially the same plane.
Claim 5
Dependent Claim
18 words
An apparatus as set forth in claim 1, wherein said feed mechanism includes a rack and pinion mechanism.
Claim 6
Dependent Claim
28 words
An apparatus as set forth in claim 1, wherein said first slider block has a dove-tail rail which is received in a dove-tail groove formed in said base.
Claim 7
Dependent Claim
221 words
An aparatus for inspecting an optical fiber assembly composed of a plurality of optical fibers having light receiving and emitting ends, in such a manner as to measure irregularities in transmission loss of said optical fibers, comprising: a base; a first slider block slidably laid on said base; gripping means attached to said first slider block and adapted to grip both ends of said optical fiber assembly; a first feed mechanism for feeding said first slider block by sliding the same on said base; a frame member secured to said base; a second slider block slidably carried by said frame member; a light projector carried by said second slider block and adapted to irradiate a light beam onto said light receiving end of one of said optical fibers; a light receiver carried by said second slider block and adapted to receive a light beam from said light emitting end of said one of said optical fibers; a light stop mechanism disposed in said light projector and adapted to stop the light beam irradiated by said light projector so that said light beam may be irradiated, exclusively, onto said light receiving end of only one of said optical fibers and within the same; and a second feed mechanism for feeding said second slider block by sliding the same along said frame member.
Claim 8
Dependent Claim
221 words
An aparatus for inspecting an optical fiber assembly composed of a plurality of optical fibers having light receiving and emitting ends, in such a manner as to measure irregularities in transmission loss of said optical fibers, comprising: a base; a first slider block slidably laid on said base; gripping means attached to said first slider block and adapted to grip both ends of said optical fiber assembly; a first feed mechanism for feeding said first slider block by sliding the same on said base; a frame member secured to said base; a second slider block slidably carried by said frame member; a light projector carried by said second slider block and adapted to irradiate a light beam onto said light receiving end of one of said optical fibers; a light receiver carried by said second slider block and adapted to receive a light beam from said light emitting end of said one of said optical fibers; a light stop mechanism disposed in said light projector and adapted to stop the light beam irradiated by said light projector so that said light beam may be irradiated, exclusively, onto said light receiving end of only one of said optical fibers and within the same; and a second feed mechanism for feeding said second slider block by sliding the same along said frame member.
Claim 9
Dependent Claim
30 words
An apparatus as set forth in claim 6, wherein said first slider block carries a light shield plate for preventing stray light reaching said light receiver from said light projector.
Claim 10
Dependent Claim
19 words
An apparatus as set forth in claim 6, wherein said both ends are gripped in substantially the same plane.
Claim 11
Dependent Claim
19 words
An apparatus as set forth in claim 6, wherein said first feed mechanism includes a rack and pinion mechanism.
Claim 12
Dependent Claim
17 words
An apparatus as set forth in claim 6, wherein said second feed mechanism includes a screw rod.
Claim 13
Dependent Claim
28 words
An apparatus as set forth in claim 6, wherein said first slider block has a dove-tail rail which is received in a dove-tail groove formed in said base.
Claim 14
Dependent Claim
58 words
An apparatus as set forth in claim 6, wherein said second slider block is fed in the directions orthogonal to the directions in which said first slider block is fed, by means of said second feed mechanism, and said second slider block has a dove-tail groove into which a dove-tail rail formed on said frame member is fitted.
References Cited (Backward Citations)
JPS5744831A
Cited
JPS58205118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |