US4610746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of optically connecting a light conductor to an electro-optical device
Assignee: US Philips Corp
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Filing: 1983-12-27
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Granted: 1986-09-09
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Expires: 2003-12-27
Abstract
Abstract In the optical connection of telecommuniation glass fibres to semiconductors a curable composition is used which comprises a polyester urethane acrylate or a polyether urethane acrylate. The composition furthermore comprises a heat- or light-activatable initiator. The refractive index of the cured connecting material is adjusted by the addition of both a reactive diluent which increases the refractive index and a reactive diluent which decreases the refractive index. Said reactive diluents furthermore serve to establish the desired mechanical properties of the connecting material prior to and after curing. The curable composition is provided on the glass fibres and/or on the semiconductor laser, after which they are contacted with each other and are optically aligned. The composition is then cured by raising the temperature or by exposure to light.
Inventors
- 👤 Dirk J. Broer
- 👤 Johan C. J. Finck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:49
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; C; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065; G02B6/36; G02B6/38; G02B6/3801; G02B6/4201; G02B6/4204; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S522/00; Y10S522/904; Y10S522/905
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
150 words
A method of optically connecting a light conductor to an electro-optical device by means of a curable composition, characterized in that the curable composition comprises from 40 to 95% by weight of at least one oligomer selected from the group of oligomeric acrylates, which composition furthermore comprises from 0.5 to 5% by weight of a heat- or light-activatable initiator, the refractive index of the connecting material which is reached after curing being adjusted by the addition of from 2 to 30% by weight of a reactive diluent which has a refractive index-increasing influence and from 2 to 30% by weight of a reactive diluent which has a refractive index-decreasing influence, said curable composition being contacted with the light conductor and the electro-optical device and after mutual positioning of the light conductor and the electro-optical device being cured by means of a rise in the temperature or by exposure to light.
Claim 2
Independent Claim
150 words
A method of optically connecting a light conductor to an electro-optical device by means of a curable composition, characterized in that the curable composition comprises from 40 to 95% by weight of at least one oligomer selected from the group of oligomeric acrylates, which composition furthermore comprises from 0.5 to 5% by weight of a heat- or light-activatable initiator, the refractive index of the connecting material which is reached after curing being adjusted by the addition of from 2 to 30% by weight of a reactive diluent which has a refractive index-increasing influence and from 2 to 30% by weight of a reactive diluent which has a refractive index-decreasing influence, said curable composition being contacted with the light conductor and the electro-optical device and after mutual positioning of the light conductor and the electro-optical device being cured by means of a rise in the temperature or by exposure to light.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1, characterized in that the oligomer is selected from the group formed by polyester urethane acrylates and polyether urethane acrylates.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1, characterized in that the reactive diluent having a refractive index-increasing influence is selected from the group formed by N-vinyl-2-pyrrolidone, 2'-oxybenzophenone-2-ethoxy-ethyl acrylate and 2-phenoxy-ethyl acrylate.
Claim 5
Dependent Claim
24 words
A method as claimed in claim 1, characterized in that the reactive diluent having a refractive index-decreasing influence is 2-ethoxy-ethyl acrylate or 2'-ethoxy-2-ethoxy-ethyl acrylate.
Claim 6
Dependent Claim
26 words
A method as claimed in claim 1, characterized in that the initiator is azobisisobutyronitrile and that curing is carried out by a rise in the temperature.
Claim 7
Dependent Claim
25 words
A method as claimed in claim 1, characterized in that the initiator is α,α-dimethoxy-α-phenyl acetophenone and curing is carried out by exposure to UV light.
Claim 8
Dependent Claim
36 words
A method as claimed in claim 1, characterized in that the oligomer is a polyester urethane acrylate of the formula ##STR1## in which m is on an average 2.6 and n is on an average 8.
Claim 9
Dependent Claim
52 words
A method as claimed in claim 1, characterized in that the oligomer is a polyether urethane acrylate of the formula ##STR2## in which n is on an average 75 and in which the reactive diluent having a refractive index-increasing influence is selected from the group formed by 2'-oxygenzophenone-2-ethoxyethyl acrylate and 2-phenoxy-ethyl acrylate.
Claim 10
Dependent Claim
31 words
A method as claimed in claim 2, characterized in that the reactive diluent having a refractive index-increasing influence is selected from the group formed by N-vinyl-2-pyrrolidone, 2'-oxybenzophenone-2-ethoxy-ethyl acrylate and 2-phenxy-ethyl acrylate.
Claim 11
Dependent Claim
24 words
A method as claimed in claim 2, characterized in that the reactive diluent having a refractive index-decreasing influence is 2-ethoxy-ethyl acrylate or 2'-ethoxy-2-ethoxy-ethyl acrylate.
Claim 12
Dependent Claim
26 words
A method as claimed in claim 2, characterized in that the initiator is azobisisobutyronitrile and that curing is carried out by a rise in the temperature.
Claim 13
Dependent Claim
26 words
A method as claimed in claim 3, characterized in that the initiator is azobisisobutyronitrile and that curing is carried out by a rise in the temperature.
Claim 14
Dependent Claim
24 words
A method as claimed in claim 2, characterized in that the initiator is α,α-dimethyl-α-phenyl-acetophenone and curing is carried out by exposure to UV light.
Claim 15
Dependent Claim
52 words
A method as claimed in claim 2, characterized in that the oligomer is a polyether urethane acrylate of the formula ##STR3## in which n is on an average 75 and in which the reactive diluent having a refractive index-increasing influence is selected from the group formed by 2'-oxygenzophenone-2-ethoxyethyl acrylate and 2-phenoxy-ethyl acrylate.
References Cited (Backward Citations)
US3891523A
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US4133723A
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US4192762A
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GB2047913A
Cited
US4436366A
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US4479698A
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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) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |