US4383731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opto-electronic head incorporating a very small diameter optical fibre portion and connection device incorporating such a head
Assignee: Thales SA
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Filing: 1980-09-18
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Granted: 1983-05-17
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Expires: 2000-09-18
Abstract
Abstract An opto-electronic head serving as a connection between a photo-emitter or photo-detector component and a very small diameter optical transmission fibre, designed to facilitate the coupling and adjustment of the respective positions of the optical fibre and the component. To this end, the optical fibre is mounted in a fibre holder incorporating a relatively wide axial passage, except at a constriction point. The passage is flared in frustum-shaped manner on the diode surface side tangential to the fibre bulge maintaining said bulge at an optimum distance from said diode.
Inventors
- 👤 Jacques Simon
- 👤 Bernard Defaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:21
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4203; G02B6/4204; G02B6/4206; G02B6/421
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
An opto-electronic head comprising: an optical fiber having a first diameter and having at least a first portion extending along an axis, one end of said fiber adjacent said first portion defining a spheroid having a second diameter greater than said first diameter; a fiber holder including a bore in which said fiber is positioned, said bore including a first portion having a third diameter larger than said first diameter, and a second portion, axially smaller than said first portion, having a fourth diameter substantially equal to said first diameter wherein said fiber is held by said fiber holder only at said second portion and at said spheroid; a base fixed to said fiber holder; and a photo sensitive diode fixed to said base, said diode facing said spheroid and being in substantial alignment with said axis.
Claim 2
Dependent Claim
137 words
An opto-electronic head comprising: an optical fiber having a first diameter and having at least a first portion extending along an axis, one end of said fiber adjacent said first portion defining a spheroid having a second diameter greater than said first diameter; a fiber holder including a bore in which said fiber is positioned, said bore including a first portion having a third diameter larger than said first diameter, and a second portion, axially smaller than said first portion, having a fourth diameter substantially equal to said first diameter wherein said fiber is held by said fiber holder only at said second portion and at said spheroid; a base fixed to said fiber holder; and a photo sensitive diode fixed to said base, said diode facing said spheroid and being in substantial alignment with said axis.
Claim 3
Dependent Claim
14 words
An opto-electronic head according to claim 1, wherein the diode is a light-emitting diode.
Claim 4
Dependent Claim
14 words
An opto-electronic head according to claim 1, wherein the diode is a photo-detecting diode.
Claim 5
Dependent Claim
21 words
An opto-electronic head according to claim 1, wherein the diode can be used both as a photo-emitter and as a photo-detector.
Claim 6
Dependent Claim
44 words
A connection device incorporating an opto-electronic head according to claim 1 including an optical fibre cable terminal, wherein the fibre holder of the head is fitted so as to join end to end the respective optical fibres of the head and the cable terminal.
Claim 7
Dependent Claim
14 words
The head of claim 1 wherein said first diameter does not exceed 400 microns.
Claim 8
Dependent Claim
15 words
The head of claim 1 wherein said first diameter is between 50 and 200 microns.
Claim 9
Dependent Claim
75 words
The head of claim 1 wherein said bore comprises along its length, beginning at an end closer to said diode: a first frustum shaped part flared toward said diode, said spheroid contacting said first frustum shaped part for positioning said spheroid; said first portion; said second portion; and a second frustum shaped part flared away from said diode, said second frustum shaped part being provided with means for fixing said fiber to said fiber holder.
Claim 10
Dependent Claim
34 words
The head of claim 1 including a support fixed to said base and having a frustum shaped opening, said spheroid being contacted by the edges of said frustum shaped opening for positioning said spheroid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |