| 摘要 |
PURPOSE:To enable continuous production by forming coating layers around a filiform body, counter-diffusing monomers in the layers, rendering a continuous concn. distribution of each of the monomers from the central part of the filiform body to the periphery and polymerizing the unpolymerized monomers. CONSTITUTION:A polymer having a refractive index N1 is shaped into a filiform body and ejected from a nozzle 1. At least two coating layers of uncured materials giving polymers having specified refractive indexes N2, N3 are formed around the filiform body by passing through a combined nozzle 2. Monomers in the layers are diffused into the polymer by passing through a diffusion part 3 and simultaneously the monomers are counter-diffused to render a continuous concn. distribution of each of the monomers. The filiform body is then introduced into an irradiation part 4, the monomer mixture is polymerized and solidified by irradiation with active rays of light and the filiform body is wound around a winding drum 7 through nip rolls 5. An optical transmission body is continuously obtd. |
