摘要:
An improved plastic optical fiber and a process for fabricating the same are disclosed. The plastic optical fiber comprises a core and a cladding is formed around the core that has a lower refractive index than that of the core. The cladding consists of an inner transparent cladding and an outer colored, opaque cladding. These inner and outer claddings are formed to be bonded together by simultaneous extrusion thereof.
摘要:
A liquid crystal-containing precursor for a liquid crystal display device consisting of a porous polytetrafluoroethylene film which has the structure defining the pores treated with a hydrophilic substance. The pores of the treated porous film are substantially filled with liquid crystals. The hydrophilizing treatment increases the transition speed of the liquid crystals from light-scattering orientation to light-transmitting orientation. The liquid crystal-filled film can be covered with transparent non-porous layers of material, having an electrically-conductive film on at least one surface, which can be hermetically sealed at the edges, to permit long-term storage of the liquid crystals in ready-to-use sheet form and easy inclusion into a liquid crystal display device.