Easily made flexible optical waveguide with good light transmission

    公开(公告)号:DE19547738A1

    公开(公告)日:1996-06-27

    申请号:DE19547738

    申请日:1995-12-20

    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.

    7.
    发明专利
    未知

    公开(公告)号:DE69810404D1

    公开(公告)日:2003-02-06

    申请号:DE69810404

    申请日:1998-08-21

    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).

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