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US 8,121,452 B2Granted
Method for fabricating a hollow fiber
AssigneeHitachi Cable, Ltd.
InventorsAkihito Hongo, Yoshinori Kurosawa, Masahiro Ohkawa, Hiroaki Takamiya
Life of this patent
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Abstract
A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.
Claims4
A method for fabricating a hollow fiber, comprising:
- injecting a first nano particle solution comprising a first metal nano particle dispersed in a first solvent into a hollow tube comprising a hollow region for transmitting a light;
- coating the first nano particle solution on an inner wall of the hollow tube;
- forming a first metal thin film having a chemical stability from the first nano particle solution coated on the inner wall;
- injecting a second nano particle solution comprising a second metal nano particle dispersed in a second solvent into the hollow tube;
- coating the second nano particle solution on a surface of the first metal thin film;
- forming a second metal thin film on a surface of the first metal thin film from the second nano particle solution coated on the surface of the first metal thin film;
- and
- injecting a transparent film formation material which chemically reacts with the second metal thin film to form a transparent thin film that is transparent with respect to a wavelength of the light, thereby forming the transparent thin film on the first metal thin film from the second nano particle solution.
5 more elements
A method for fabricating a hollow fiber, comprising:
- injecting a first nano particle solution comprising a first metal nano particle dispersed in a first solvent into a hollow tube comprising a hollow region for transmitting a light;
- coating the first nano particle solution on an inner wall of the hollow tube;
- forming a first metal thin film having a chemical stability from the first nano particle solution coated on the inner wall;
- injecting a second nano particle solution comprising a second metal nano particle dispersed in a second solvent into the hollow tube;
- coating the second nano particle solution on a surface of the first metal thin film;
- and
- flowing a gas including an oxygen into the hollow tube, thereby forming a transparent thin film on the first metal thin film from the second nano particle solution, the transparent thin film being transparent with respect to a wavelength of the light.
4 more elements
Dependencies are inferred from the claim text.