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US4765713A
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Plastic-clad light-transmitting fiber
Assignee: AGC Inc
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Filing: 1986-07-03
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Granted: 1988-08-23
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Expires: 2006-07-03
Abstract
Abstract A plastic-clad light-transmitting fiber having a high NA (numerical aperture) and low transmission loss, which consists essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, wherein the clad of organopolysiloxane is a cured body having 30% by weight or more of fluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and wherein the vinyl group-containing organofluorosiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of hydrocarbon siloxane unit ranging from 20 to 75 mol %.
Inventors
- 👤 Masashi Matsuo
- 👤 Yutaka Furukawa
- 👤 Toshio Iwamoto
- 👤 Shoichi Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:58
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C25/00; C03C25/10; C03C25/104; C03C25/105; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
168 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: ##STR22## wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; m/l indicates a ratio of from 0.54 to 3; and m+l is the total unit number of the compounds of 80 or more.
Claim 2
Dependent Claim
168 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: ##STR22## wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; m/l indicates a ratio of from 0.54 to 3; and m+l is the total unit number of the compounds of 80 or more.
Claim 3
Dependent Claim
46 words
The plastic-clad light-transmitting fiber according to claim 1, wherein said polyfluoroalkyl group represented by Q has a structure of Rf--R-- wherein Rf designates a perfluoroalkyl group having two to ten carbon atoms; R denotes an alkylene group; and Rf and R may contain an ether bond.
Claim 4
Dependent Claim
185 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of a copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: ##STR23## wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; Rf' designates a perfluoroalkylene group which may contain therein an ether bond; q/p is a ration in a range of from 1 to 2; and q+p is the total unit number of the compounds of 80 or more.
Claim 5
Dependent Claim
185 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of a copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: ##STR23## wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; Rf' designates a perfluoroalkylene group which may contain therein an ether bond; q/p is a ration in a range of from 1 to 2; and q+p is the total unit number of the compounds of 80 or more.
Claim 6
Dependent Claim
47 words
The plastic-clad light-transmitting fiber according to claim 3, wherein said polyfluoroalkyl group represented by Q has a structure of Rf--R-- wherein Rf designates a perfluoroalkyl group having two to ten carbon atoms, R denotes an alkylene group; and Rf and R may contain therein an ether bond.
Claim 7
Dependent Claim
159 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said hydrogen-containing fluorosilicone compound is represented by the following general formula: ##STR24## wherein Rf" represents a perfluoroalkylene group which may contain therein an ether bond; R 1 and R 2 are an alkyl group or a fluoroalkyl group; and a is an integer of 1 to 3 and b is an integer of 0 or 1.
Claim 8
Dependent Claim
159 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol %, and wherein said hydrogen-containing fluorosilicone compound is represented by the following general formula: ##STR24## wherein Rf" represents a perfluoroalkylene group which may contain therein an ether bond; R 1 and R 2 are an alkyl group or a fluoroalkyl group; and a is an integer of 1 to 3 and b is an integer of 0 or 1.
Claim 9
Dependent Claim
24 words
The plastic-clad light-transmitting fiber according to claim 5, wherein said hydrogen-containing fluorosilicone compound has its viscosity of 1,000 cps at 25° C. or below.
Claim 10
Dependent Claim
23 words
The plastic-clad light-transmitting fiber according to claim 5, wherein said hydrogen-containing fluorosilicon compound has its fluorine content of 30% by weight or more.
Claim 11
Dependent Claim
18 words
The plastic-clad light-transmitting fiber according to claim 1, wherein said curing reaction is catalyzed by a platinum compound.
Claim 12
Dependent Claim
18 words
The plastic-clad light-transmitting fiber according to claim 3, wherein said curing reaction is catalyzed by a platinum compound.
Claim 13
Dependent Claim
18 words
The plastic-clad light-transmitting fiber according to claim 5, wherein said curing reaction is catalyzed by a platinum compound.
Claim 14
Dependent Claim
65 words
The plastic-clad light-transmitting fiber according to claim 1, wherein said hydrogen-containing fluorosilicone compound is represented by the following general formula: ##STR25## wherein Rf" represents a perfluoroalkylene group which may contain therein an ether bond; R 1 and R 2 are an aIkyl group or a fluoroalkyl group; and a is an integer of 1 to 3 and b is an integer of 0 or 1.
Claim 15
Dependent Claim
65 words
The plastic-clad light-transmitting fiber according to claim 3, wherein said hydrogen-containing fluorosilicone compound is represented by the following general formula: ##STR26## wherein Rf" represents a perflouroalkylene group which may contain therein an ether bond; R 1 and R 2 are an alkyl group or a fluoroalkyl group; and a is an integer of 1 to 3 and b is an integer of 0 or 1.
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |