EP0743542A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical waveguide tube
Assignee: Bridgestone Corp
•
Filing: 1996-05-17
•
Granted: —
•
Expires: 2016-05-17
Abstract
Abstract In an optical waveguide tube comprising a tubular cladding filled with a solid core having a higher refractive index than the cladding, a light transmissive window member is disposed in close contact with at least the end face of the core on a light incident side for protecting the core end face from thermal influence and contamination. Means disposed around the cladding and the window member for securing the window member to the cladding may be a tape wrapped around them or a heat shrinkable sleeve or a ferrule. Alternatively, a ferrule surrounding the outer periphery of the cladding at each end is fastened for securing the cladding to the core at each end for preventing the core from projecting out of the cladding. The ferrule may have a collar disposed in abutment with the core end face.
Inventors
- 👤 Hideo Sugiyama
- 👤 Masato Sugimachi
- 👤 Atsushi Hotta
- 👤 Minoru Ishiharada
- 👤 Itsuo Tanuma
- 👤 Torao Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:44
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/381; G02B6/3814; G02B6/02; G02B6/02033; G02B6/241; G02B6/3833; G02B6/3847; G02B6/3849; G02B6/42; G02B6/4296
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
56 words
An optical waveguide tube comprising a tubular cladding, a solid core within the cladding having a higher refractive index than the cladding, the core having opposed end faces, and a light transmissive window member disposed in close contact with at least the end face of said core on a light incident side over its entire surface.
Claim 2
Dependent Claim
73 words
An optical waveguide tube comprising a tubular cladding, a solid core within the cladding having a higher refractive index than the cladding, the core having opposed end faces, a light transmissive window member disposed in close contact with at least the end face of said core on a light incident side over its entire surface, and means disposed around said cladding and said window member for securing said window member to said cladding.
Claim 3
Dependent Claim
22 words
The optical waveguide tube of claim 2 wherein said securing means comprises a tape wrapped around said cladding and said window member.
Claim 4
Dependent Claim
28 words
The optical waveguide tube of claim 2 wherein said securing means comprises at least one of a sleeve and a ferrule surrounding said cladding and said window member.
Claim 5
Dependent Claim
21 words
The optical waveguide tube of claim 1 or 2 wherein said window member is adhesively bonded to the core end face.
Claim 6
Dependent Claim
30 words
The optical waveguide tube of claim 1 or 2 wherein the core is formed of a flexible plastic material and the window member is formed of an inorganic glass material.
Claim 7
Dependent Claim
28 words
The optical waveguide tube of claim 3 wherein the tape is wrapped on the outer periphery of said cladding and said window member with an adhesive intervening therebetween.
Claim 8
Dependent Claim
31 words
The optical waveguide tube of claim 4 wherein said sleeve is a heat shrinkable sleeve which is heat shrunk to cover the outer periphery of said cladding and said window member.
Claim 9
Dependent Claim
52 words
The optical waveguide tube of claim 2 wherein said securing means comprises a tape wrapped on the outer periphery of said cladding and said window member with an adhesive intervening therebetween and a sleeve fitted over the wrapped tape and heat shrunk thereto for tightly surrounding said cladding and said window member.
Claim 10
Dependent Claim
26 words
The optical waveguide tube of claim 4 wherein the ferrule is adhesively bonded to said cladding and said window member for surrounding the outer periphery thereof.
Claim 11
Dependent Claim
52 words
An optical waveguide tube having opposed end comprising a tubular cladding, a solid core within the cladding having a higher refractive index than the cladding, and a ferrule surrounding the outer periphery of the cladding at each end, said ferrule being fastened for securing the cladding to the core at each end.
Claim 12
Dependent Claim
38 words
The optical waveguide tube of claim 11 wherein the core has opposed end faces, the tube further comprising a light transmissive window member disposed in close contact with at least the end face on a light incident side.
Claim 13
Dependent Claim
19 words
The optical waveguide tube of claim 12 wherein said window member is adhesively bonded to the core end face.
Claim 14
Dependent Claim
28 words
The optical waveguide tube of claim 12 wherein the core is formed of a flexible plastic material and the window member is formed of an inorganic glass material.
Claim 15
Dependent Claim
21 words
The optical waveguide tube of claim 11 further comprising a tape or a sleeve disposed between said ferrule and said cladding.
Claim 16
Dependent Claim
45 words
The optical waveguide tube of claim 12 further comprising a tape wrapped around said cladding and said window member, with an adhesive intervening therebetween, for securing said window member to said cladding, and a ferrule fitted over the tape wrapping and fastened to said cladding.
Claim 17
Dependent Claim
44 words
The optical waveguide tube of claim 12 further comprising a heat shrinkable sleeve fitted over said cladding and said window member and heat shrunk for securing said window member to said cladding, and a ferrule fitted over the sleeve and fastened to said cladding.
Claim 18
Dependent Claim
57 words
The optical waveguide tube of claim 12 further comprising a tape wrapped around said cladding and said window member, with an adhesive intervening therebetween, and a heat shrinkable sleeve fitted over said tape wrapping and heat shrunk for securing said window member to said cladding, the ferrule being fitted over the sleeve and fastened to said cladding.
Claim 19
Dependent Claim
64 words
An optical waveguide tube having opposed end comprising a tubular cladding, a solid core within the cladding having a higher refractive index than the cladding, said core having opposed end faces, and a tubular member secured to said cladding at each end for surrounding the outer periphery thereof, said member having a radially inwardly extending collar which is abutted against the core end face.
Claim 20
Dependent Claim
44 words
The optical waveguide tube of claim 19 further comprising a light transmissive window member disposed in close contact with at least the end face of said core on a light incident side, said collar being abutted against the outer surface of said window member.
Claim 21
Dependent Claim
19 words
The optical waveguide tube of claim 20 wherein said window member is adhesively bonded to the core end face.
Claim 22
Dependent Claim
28 words
The optical waveguide tube of claim 20 wherein the core is formed of a flexible plastic material and the window member is formed of an inorganic glass material.
Claim 23
Dependent Claim
21 words
The optical waveguide tube of claim 19 wherein said tubular member is a metallic ferrule which is fastened to said cladding.
Claim 24
Dependent Claim
21 words
The optical waveguide tube of claim 23 further comprising a tape or a sleeve disposed between said ferrule and said cladding.
Claim 25
Dependent Claim
25 words
The optical waveguide tube of claim 20 wherein said tubular member is a metallic ferrule which is fastened to said cladding and said window member.
Claim 26
Dependent Claim
45 words
The optical waveguide tube of claim 25 further comprising a tape wrapped around said cladding and said window member, with an adhesive intervening therebetween, for securing said window member to said cladding, the ferrule being fitted over the tape wrapping and fastened to said cladding.
Claim 27
Dependent Claim
44 words
The optical waveguide tube of claim 25 further comprising a heat shrinkable sleeve fitted over said cladding and said window member and heat shrunk for securing said window member to said cladding, the ferrule being fitted over the sleeve and fastened to said cladding.
Claim 28
Dependent Claim
57 words
The optical waveguide tube of claim 25 further comprising a tape wrapped around said cladding and said window member, with an adhesive intervening therebetween, and a heat shrinkable sleeve fitted over said tape wrapping and heat shrunk for securing said window member to said cladding, the ferrule being fitted over the sleeve and fastened to said cladding.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.