Abstract:
Optical waveguide tube comprises a tubular mantle and a solid core with a higher refractive index than the mantle. The core consists of a resin (I) with a Tg of up to 50 deg C and an elastic modulus of up to 10 dyne/cm . Also claimed is a method of making the waveguide. Pref. (I) is a copolymer of (a) (meth)acrylic acid or a lower alcohol (meth)acrylate with (b-1) an alkoxy- or aryloxy-(poly)alkylene glycol (meth)acrylate of formula H2C=C(R )-CO-(OC-nH2n)m-OR (II) or (b-2) a higher alkyl (meth)acrylate of formula H2C=C(R )-COOR (III) (where R = H or Me; R = alkyl or aryl; n, m = 1-10; R = 8-20C alkyl). Esp. (I) is a copolymer of methyl (meth)acrylate with 2-methoxyethyl (meth)-acrylate or phenoxypolyethylene glycol (meth)acrylate; or a copolymer of methyl (meth)acrylate with a mixt. of 12 and 13C alkyl (meth)acrylates, opt. mixed with a phosphate, aromatic carboxylate, aliphatic carboxylic acid or carboxylate, glycol and/or glycol (meth)acrylate.
Abstract:
In an optical transmission tube (1) comprising a tubular cladding (11) and a core (12) within the cladding having a higher index of refraction than the cladding, a strip-shaped reflecting layer (13) is longitudinally extended between the cladding and the core. Light passing through the core is reflected and scattered by the reflecting layer to emerge from the tube through an area of the outer surface of the cladding opposed to the reflecting layer. The optical transmission tube is prepared by extruding the core, the reflecting layer and a tubular cladding.
Abstract:
A light guide includes a hollow tubular cladding of a fluorocarbon resin having a methacrylic or acrylic monomer graft polymerized inner surface. The cladding is integrally filled with a core of a methacrylic or acrylic resin which is polymerized to the graft polymerized surface.
Abstract:
In an optical transmission tube (1) comprising a tubular cladding (11) and a core (12) within the cladding having a higher index of refraction than the cladding, a strip-shaped reflecting layer (13) is longitudinally extended between the cladding and the core. Light passing through the core is reflected and scattered by the reflecting layer to emerge from the tube through an area of the outer surface of the cladding opposed to the reflecting layer. The optical transmission tube is prepared by extruding the core, the reflecting layer and a tubular cladding.
Abstract:
A line glower usable in water, rain, snow or in a place where an explosion may possibly take place, and adapted to work with a small power to emit light from the lateral side thereof. It comprises a light transmission tube (1) including a transparent core (12) and a clad (11) having a smaller refractive index than the core (12); a water-proof light source (2) disposed at at least one axial end of the light transmission tube (1); and a drive unit (3) to turn on and off the light source; the light emitted from the light source and incident upon an end of the light transmission tube (1) being let to go out from a lateral side of the tube (1).
Abstract:
A transparent conductive substrate comprising a transparent base and an ITO film formed on the transparent base is disclosed which is excellent in acid resistance of the ITO film. The content of tin oxide in the ITO film is not less than 30 weight%. An electrode for dye-sensitized solar cells comprises this transparent conductive substrate and a dye-adsorbing semiconductor film formed on the ITO film of the substrate. Also disclosed is a dye-sensitized solar cell which uses such an electrode for dye-sensitized solar cells as a dye-sensitized semiconductor electrode. By increasing the ratio of SnO2 to 30 weight% or more, acid resistance is significantly improved. An alternate adsorption film formed on the ITO film by an alternate adsorption method is roughened by an acid treatment, thereby forming a replica layer. The dye-sensitized semiconductor electrode for dye-sensitized solar cells is obtained by forming a semiconductor layer on this replica layer.
Abstract:
An electrolyte for dye-sensitized solar cells, wherein an oxidation-reduction substance is carried by a vulcanized rubber, a phosphazene polymer, a porous body comprising a high molecular material which has a three-dimensional continuous network skeleton structure, or an EVA resin film. A dye-sensitized solar cell comprising dye-sensitized semiconductor electrodes 2, 3, a counter electrode 4 arranged at an opposed position to the electrodes, and an electrolyte 6 between the electrodes 2, 3 and the electrode 4. A solid electrolyte for dye-sensitized solar cells effective in improving the generation efficiency, durability, and safety of dye-sensitized solar cells and can be manufactured inexpensively.