Patent EP0185360A2 successfully refreshed from Google Patents.
EP0185360A2
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EP
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Optical-fibre coupler
Assignee: TIM SpA
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Filing: 1985-12-17
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Granted: —
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Expires: 2005-12-17
Abstract
Abstract The coupler is apt to send a plurality of optical fibres the light radiation coming from a single fibre or vice versa to send a single fibre the radiations coming from a plurality of fibres. A round paraboloid receives the optical beams condensed by semi-spherical lenses placed in front of the fibre end faces and concentrates them on the end face of the output fibre through a hemispherical lens (Fig.1).
Inventors
- 👤 Eros Modone
- 👤 Salvatore Morasca
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:55
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2817
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
200 words
A coupler for optical fibres, apt to send a plurality of fibres the light radiation arriving from a fibre or vice-versa to send a single fibre the light radiation arriving from a plurality of fibres, characterized that it consists of: - a first glass part (S), having the geometrical shape of a round paraboloid, limited by a plane perpendicular to the axis, the curved surface being reflecting towards the paraboloid concavity; - a second glass part (P), shaped like a plate with two parallel and plane surfaces, where hemispherical lenses (Ll,...,L5) are obtained with their respective maximum circles lying on one of the plane surfaces; - a centering plate (C) with at least one plane surface, perpendicularly to which optical fibre guides are obtained; the plane surface of the first part (S) being soldered to the plane surface of the second part (P) containing the maximum circles of hemispherical lenses, in the position in which the center of one of the hemispherical lenses lies on the paraboloid axis, the other plane surface of the second part (P) being soldered to the plane surface of the centering plate (C), with the guide axes passing through the centres of the hemispherical lenses.
Claim 2
Dependent Claim
200 words
A coupler for optical fibres, apt to send a plurality of fibres the light radiation arriving from a fibre or vice-versa to send a single fibre the light radiation arriving from a plurality of fibres, characterized that it consists of: - a first glass part (S), having the geometrical shape of a round paraboloid, limited by a plane perpendicular to the axis, the curved surface being reflecting towards the paraboloid concavity; - a second glass part (P), shaped like a plate with two parallel and plane surfaces, where hemispherical lenses (Ll,...,L5) are obtained with their respective maximum circles lying on one of the plane surfaces; - a centering plate (C) with at least one plane surface, perpendicularly to which optical fibre guides are obtained; the plane surface of the first part (S) being soldered to the plane surface of the second part (P) containing the maximum circles of hemispherical lenses, in the position in which the center of one of the hemispherical lenses lies on the paraboloid axis, the other plane surface of the second part (P) being soldered to the plane surface of the centering plate (C), with the guide axes passing through the centres of the hemispherical lenses.
Claim 3
Dependent Claim
67 words
Coupler for optical fibres as in claim 1, characterized in that the end faces of the optical fibres inserted into the guides of the centering plate (C) are arranged such as to coincide with the foci of the hemispherical lenses (Ll,...,L5) with the only exception of the end face of the fibre lying on the paraboloid axis, whose distance exceeds the focal distance of the respective lens.
Claim 4
Dependent Claim
40 words
Coupler for optical fibres as in claim 2, characterized in that the hemispherical lenses of the second part (P) and the corresponding guides of the centering plate (C) are arranged on concentric circles, whose centres lie on the paraboloid axis.
Claim 5
Dependent Claim
54 words
Coupler for optical fibres as in claim 3, characterized in that in the centre of said concentric circles a fibre is placed, six fibres are placed on the first circle, a number twice as great on the second, on the third a number twice as great as that of the second and so on.
Claim 6
Dependent Claim
31 words
Coupler for optical fibres as in any of claims 1 to 4, character--ized in that said first glass pa.rty(S) and said second glass part (P) are made in one glass piece.
References Cited (Backward Citations)
No citation records indexed.
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