Patent EP0031146A2 successfully refreshed from Google Patents.
EP0031146A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coupling assembly of an optical fibre and a light source and method of assembling the same
Assignee: TIM SpA
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Filing: 1980-12-18
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Granted: —
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Expires: 2000-12-18
Abstract
Abstract Coupling device to be inserted between an optical fibre and a light source for use in telecommunications an optical carrier, that makes use of a support for the source, of a first ring soldered onto the support, of a second ring with a two - diameter hole soldered onto the first ring, of a drilled small cylinder and of a capillary tube soldered along the inner surface of the small cylinder. The assembling method consists of a sequence of soldering and aligning operations.
Inventors
- 👤 Carlo Basola
- 👤 Guido Chiaretti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4427; G02B6/4428
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
293 words
I. Coupling device between an optical fibre and a light source characterized in that it is composed of: - a support for said light source (2), composed of a threaded stem (1), an insulating plate (3) and leads (4, 4'), electrically connected to the light source, being the light source and the leads secured onto the insulating plate, that is in turn secured onto the threaded stem; - a first ring (5), having parallel bases, thickness inferior to its diameter, and a diameter of the axial hole such that it can contain said light source, said first ring being soldered to said insulating plate (3) along one of its bases; - a second ring (6), having parallel bases, a two - diameter axial hole, the smaller of which is nearer the source, and the annulus forming the bottom of the hole with the greater diameter parallel to its bases, said second ring being soldered to said first ring (5) along its basis whith the smaller - diameter hole; - a small cylinder (7), axially drilled and with its bases lying in planes perpendicular to its rotation axis, said small cylinder being placed in the greater diameter hole of said second ring (6) and soldered therein; - a capillary tube (8), having the internal diameter slightly greater than the diameter of said optical fibre (9), said capillary tube being soldered inside the hole of said small cylinder (7) and containing the equally soldered optical fibre; - a cap (14), having at one end an aperture apt to contain and hold said fibre and at the other end an aperture apt to contain said second ring (6) and a part of said first ring (5), said cap being soldered to said first and second rings.
Claim 2
Dependent Claim
27 words
Coupling device as in claim 1, characterized in that said small cylinder (7) has an axial hole that radially extends so as to make a longitudinal slot.
Claim 3
Dependent Claim
17 words
Coupling device as in claim 1 characterized in that said optical fibre (9) is sperical - ended.
Claim 4
Dependent Claim
19 words
Coupling device as in claim 1, characterized in that said light source is a high radiance, head emission LED.
Claim 5
Dependent Claim
18 words
Coupling device as in claim 1, characterized in that its parts are soldered by means of synthetic resins.
Claim 6
Dependent Claim
37 words
Coupling device as in claim 1, characterized in that said first an< second rings (5, 6) are made of alumina (A12 0 3), said small cylinder(7)is made of kowar and said capillary tube is made of steel.
Claim 7
Dependent Claim
202 words
Method of assembling the coupling device as in any preceding claims, characterized in that it comprises the following phases oj - soldering of said first ring (5) onto said plate (3); - soldering of said capillary tube (8) onto said optical fibre (9); - soldering of said small cylinder (7) into the hole with the greater diameter of said second ring (6); - insertion of said capillary tube (8) containing the optical fibre intc the hole of said small cylinder (7); - alignment of the optical axis of said optical fibre (9) to the maximum radiance axis of said light source (2) by translating said firs ring (5) with respect to said second ring (6); - soldering of said first ring (5) onto said second ring (6) in the position of optical alignment between optical fibre and light source; - realignment of the optical axis of said optical fibre (9) with the maximum radiance axis of said light source (2) by translating said capillary tube (8) inside said small cylinder (7); - soldering of said capillary tube (8) into said small cylinder; - soldering of said cap (14) onto said second ring (6) and onto a part of said first ring (5).
Claim 8
Dependent Claim
48 words
Method as in claim 7, characterized in that said alignment ) and said realignment are effected by feeding said light source (2) and by mutually translating the parts of said coupling device to the attainment of maximum optical power measured at the output of the optical fibre (9)
Claim 9
Dependent Claim
28 words
Method as in claim 7, characterized in that after said soldering of said capillary tube (8) onto said optical fibre (9), the fibre end is spherically - shaped.
Claim 10
Dependent Claim
29 words
10 Coupling device between an optical fibre and a light source and method of assembling the same, basically as described in the text and depicted in the annexed drawing.
References Cited (Backward Citations)
No citation records indexed.
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