Patent ID: 6314227
Filing Date: 2001-11-06
Classification: C08J,G02B

Abstract:
A liquid lightguide, comprising a tube, closed by transparent plugs at both ends and filled with an optical transparent liquid and coated on its surface with a thin coating layer containing a perfluorinated amorphous fluoropolymer, the coating layer having a refractive index lower than that of the transparent liquid, wherein the coating layer is a mixture of a solid perfluorinated amorphous fluoropolymer and a liquid hydrophobic perfluorinated amorphous fluoropolymer, wherein the weight ratio between the liquid hydrophobic perfluorinated amorphous fluoropolymer and the solid perfluorinated amorphous fluoropolymer is 0.05 to 3.0 and 1, respectively, and wherein the liquid hydrophobic perfluorinated amorphous fluoropolymer remains within the coating layer.