EP0148012A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical-fiber coupling device
Assignee: Toshiba Corp
•
Filing: 1984-12-20
•
Granted: —
•
Expires: 2004-12-20
Abstract
Abstract Disclosed is an optical fiber coupling device which comprises an optical fiber (10), a coupling member (18) to which the optical fiber is coupled, a coupling means (16) for coupling the optical fiber to the coupling member, and an optical-fiber fixing section (22, 24, 26, 28) for fixing a part of the optical fiber. The optical fiber is coupled only at its forward end to the coupling member. A part of the optical fiber is fixed at a position separated from the forward end of the optical fiber by a specified distance. Thus, the stress applied to the fixed section (20) of the optical fiber is located between the forward end of the optical fiber and the fixed section (20) of the optical fiber fixed by the optical fiber fixing section and which covers the specified distance, thereby to prevent the stress from being applied to the forward end of the optical fiber.
Inventors
- 👤 Takao Ito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 20:53
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/255; G02B6/2551; G02B6/26; G02B6/30; G02B6/32; G02B6/322; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4204; G02B6/4212
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
199 words
An optical-fiber coupling device comprising: an optical fiber means (10) for transmitting optical information; a coupling member (18, 30, 50, 60, 72, 82) to which said optical fiber means is coupled so that said coupling member may transmit said optical information to and receive it from said optical fiber means; a coupling means (16, 34, 36, 38, 40) for coupling said optical fiber means to said coupling member; and an optical-fiber fixing means (22, 24, 26, 26a, 26b, 28) for fixing a part of said optical fiber means, characterized in that said optical fiber means (10) is coupled only at its forward end to said coupling member; said part of said optical fiber means is fixed by said optical-fiber fixing means at a position separated from said forward end by a specified distance, whereby a stress applied to said fixed section of said optical fiber means is absorbed into a portion (32) of said optical fiber means located between said forward end of said optical fiber means and said fixed section of said optical fiber means fixed by said optical-fiber fixing means, so that said stress is prevented from acting on said forward end of said optical fiber means.
Claim 2
Dependent Claim
199 words
An optical-fiber coupling device comprising: an optical fiber means (10) for transmitting optical information; a coupling member (18, 30, 50, 60, 72, 82) to which said optical fiber means is coupled so that said coupling member may transmit said optical information to and receive it from said optical fiber means; a coupling means (16, 34, 36, 38, 40) for coupling said optical fiber means to said coupling member; and an optical-fiber fixing means (22, 24, 26, 26a, 26b, 28) for fixing a part of said optical fiber means, characterized in that said optical fiber means (10) is coupled only at its forward end to said coupling member; said part of said optical fiber means is fixed by said optical-fiber fixing means at a position separated from said forward end by a specified distance, whereby a stress applied to said fixed section of said optical fiber means is absorbed into a portion (32) of said optical fiber means located between said forward end of said optical fiber means and said fixed section of said optical fiber means fixed by said optical-fiber fixing means, so that said stress is prevented from acting on said forward end of said optical fiber means.
Claim 3
Dependent Claim
19 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling means is an adhesive agent (16).
Claim 4
Dependent Claim
19 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling means is a soldering glass (34).
Claim 5
Dependent Claim
61 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling means includes a minute sleeve (38) into which the forward end portion of said optical fiber means is inserted, and an adhesive agent for fixing the forward end portion of said optical fiber means to said minute sleeve and for connecting said minute sleeve to said coupling member.
Claim 6
Dependent Claim
38 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling means is a thermal fusion layer (36) formed in the boundary surface between said forward end of said optical fiber means and said coupling member.
Claim 7
Dependent Claim
31 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling member is a rod lens (18) to which said optical fiber means is coupled at its forward end.
Claim 8
Dependent Claim
47 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling member is a light transmission plate (50), which has an optical lens (52) into which said optical information is introduced on the side opposite to that on which said optical fiber means is provided.
Claim 9
Dependent Claim
35 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling member is a light transmission plate (60), which contains therein an optical lens mechanism (62) into which said optical information is introduced.
Claim 10
Dependent Claim
44 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling member is an optical semiconductor element (72), which has at least one of light-emitting and light receiving functions and to which said forward end of said optical fiber means is coupled.
Claim 11
Dependent Claim
40 words
The optical-fiber coupling device according to claim 1, characterized in that said coupling member is an optical waveguide (82) to which said forward end of said optical fiber means is coupled and which is used to transmit said optical information.
Claim 12
Dependent Claim
87 words
The optical-fiber coupling device according to claim 1, characterized in that said optical-fiber fixing means includes a protective sleeve (24) which covers said optical fiber means and thereby protects the same, an adhesive agent (22) which adheres a portion of said optical fiber means covered by said protective sleeve to said protective sleeve, and a connecting sleeve (26) which is connected to said protective sleeve and has a cross section greater than that of said protective sleeve, said connecting sleeve being fixed to said coupling member (30).
Claim 13
Dependent Claim
66 words
The optical-fiber coupling device according to claim 11, characterized in that said optical fiber means includes an optical fiber element (12) and an optical-fiber covering means (14) for covering said optical fiber element, that portion of said optical fiber means which extends from a specified position within said protective sleeve to said forward end of said optical fiber means being removed its said optical-fiber covering means.
Claim 14
Dependent Claim
24 words
The optical-fiber coupling device according to claim 1, characterized in that said optical fiber means comprises a plurality of optical fiber elements (lOa, lOb).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.