التفاصيل البيبلوغرافية
| العنوان: |
OPTICAL WAVEGUIDE FILM |
| Document Number: |
20090252940 |
| تاريخ النشر: |
October 8, 2009 |
| Appl. No: |
12/440886 |
| Application Filed: |
September 12, 2007 |
| مستخلص: |
An optical waveguide film is provided having a cross-sectional structure wherein claddings composed of a thermoplastic resin B and dispersions (cores) composed of a thermoplastic resin A extend in the machine direction of the film and are arrayed in the transverse direction of the film, the optical waveguide film comprising not less than 3 cores, diameters (We1, We2) of cores located at the both ends in the transverse direction of the film and diameter (Wc) of a core in the central portion in the transverse direction of the film satisfying the following Formulae (1) and (2), the optical waveguide film comprising a continuous cladding layer at least one side thereof, the thicknesses of the cladding layers (Te1, Te2) at the both ends thereof in the transverse direction of the film and the thickness (Tc) of the cladding layer in the central portion in the transverse direction of the film satisfying the following Formulae (3) and (4): 0.8≦We1/Wc≦1.2 Formula (1) 0.8≦We2/Wc≦1.2 Formula (2) 0.8≦Te1/Tc≦1.2 Formula (3) 0.8≦Te2/Tc≦1.2 Formula (4). |
| Inventors: |
Gouda, Wataru (Shiga, JP); Osada, Shunichi (Shiga, JP); Oyama, Masatoshi (Shiga, JP) |
| Assignees: |
Toray Industries, Inc. (Tokyo, JP) |
| Claim: |
1. An optical waveguide film having a cross-sectional structure wherein claddings composed of a thermoplastic resin B and dispersions (cores) composed of a thermoplastic resin A extend in a machine direction of the film and are arrayed in a transverse direction of the film, said optical waveguide film comprising not less than 3 cores, diameters (We1, We2) of cores located at both ends in the transverse direction of the film and a diameter (Wc) of a core in a central portion in the transverse direction of the film satisfying the following Formulae (1) and (2), said optical waveguide film comprising a continuous cladding layer at least one side thereof, thicknesses of cladding layers (Te1, Te2) at both ends thereof in the transverse direction of the film and a thickness (Tc) of the cladding layer in the central portion in the transverse direction of the film satisfying the following Formulae (3) and (4): 0.8
|
| Claim: |
2. The optical waveguide film according to claim 1, wherein variation in core diameter is not less than 0.001% to not more than 20%. |
| Claim: |
3. The optical waveguide film according to claim 1, wherein at least 4 consecutive adjacent cores satisfying the relationship between a cross-sectional area (Ac) of a core located at the central portion in the transverse direction of the film and a cross-sectional area (A) of an arbitrary core arrayed in the transverse direction of the film defined in Formula (5) below exist. 0.8
|
| Claim: |
4. The optical waveguide film according to claim 1, wherein variation in a cross-sectional area along the machine direction of the film of the cores is not more than 5%. |
| Claim: |
5. The optical waveguide film according to claim 1, wherein variation in core intervals is not more than 30%. |
| Claim: |
6. The optical waveguide film according to claim 1, wherein a core/clad area ratio in a cross section is not less than 0.5. |
| Claim: |
7. The optical waveguide film according to claim 1, further comprising dispersions as core interval adjusting portions. |
| Claim: |
8. The optical waveguide film according to claim 1, further comprising one or more dispersions acting as core interval adjusting portions having a length in the transverse direction of the film of not less than 10 mm. |
| Claim: |
9. The optical waveguide film according to claim 1, wherein a concavity and a convexity with a depth of not less than 10 μm exist in at least one surface of the film, said concavity being formed at the cladding portions between the cores, and said concavity extends toward the machine direction of the film. |
| Claim: |
10. The optical waveguide film according to claim 1, wherein the cores comprise polymethylmethacrylate as a major component and the claddings comprise a thermoplastic resin having fluorine group as a major component. |
| Claim: |
11. The optical waveguide film according to claim 1, wherein the thermoplastic resin having fluorine groups is a tetrafluoroethylene-ethylene copolymer. |
| Claim: |
12. The optical waveguide film according to claim 1, which has a haze value of not more than 5%. |
| Claim: |
13. The optical waveguide film according to claim 1, which has an NA of not less than 0.5. |
| Claim: |
14. The optical waveguide film according to claim 1, wherein melt viscosities of the cores and of the claddings at a film-molding temperature simultaneously satisfy the relationship defined by the following Formulae (6) and (7): Melt Viscosity of Cores≧Melt Viscosity of Claddings Formula (6) Melt Viscosity of Claddings≦1000(Pa·s) Formula (7). |
| Claim: |
15. The optical waveguide film according to claim 1, wherein a heat shrinkage ratio in the machine direction of the film after heat treatment at 100° C. for 24 hours is not more than 5%. |
| Claim: |
16. A die comprising, at least, not less than 2 inlets, a passage B having a width-enlarging ratio of not less than 2 and not more than 100, and a passage A having a width-enlarging ratio of not less than 0.5 and not more than 1.5. |
| Claim: |
17. An apparatus for producing an optical waveguide film, comprising the die according to claim 16 connected to a feedblock having one or more slit sections each of which has not less than 5 slits. |
| Claim: |
18. The optical waveguide film according to claim 1, produced by using an apparatus for producing an optical waveguide film comprising a feedblock having one or more slit sections each of which has not less than 5 slits and a die connected to the feedblock, the die comprising, at least, not less than 2 inlets, a passage B having a width-enlarging ratio of not less than 2 and not more than 100, and a passage A having a width-enlarging ratio of not less than 0.5 and not more than 1.5. |
| Claim: |
19. A process for producing an optical waveguide film using the apparatus for producing an optical waveguide film according to claim 17. |
| Claim: |
20. The die according to claim 16, configured for producing an optical waveguide film. |
| Claim: |
21. The optical waveguide film according to claim 1, which is used after being cut off along a machine direction of the film-thickness direction cross section. |
| Claim: |
22. An optical module using the optical waveguide film according to claim 1. |
| Claim: |
23. An illumination apparatus using the optical waveguide film according to claim 1. |
| Claim: |
24. A communication apparatus using the optical waveguide film according to claim 1. |
| Claim: |
25. A display apparatus using the optical waveguide film according to claim 1. |
| Claim: |
26. A light guide with a connector using the optical waveguide film according to claim 1. |
| Current U.S. Class: |
428/213 |
| Current International Class: |
32; 29; 29 |
| رقم الانضمام: |
edspap.20090252940 |
| قاعدة البيانات: |
USPTO Patent Applications |
