Method of injection molding lens of transparent or semitransparent plastic material for producing car lights and similar

摘要

A method of injection molding lens bodies of transparent or semitransparent plastic material for producing car lights and similar; the lens body being defined by a convex shell made of transparent or semitransparent plastic material, and which has a concave face eventually facing the light source of the light, and a convex face eventually forming part of the outer surface of the light, and is divided into at least a first and a second monochromatic portion; the molding method forming, in succession, a first half-shell of plastic material substantially reproducing the shape of the whole shell, and, directly on the concave surface of the first half-shell, a second half-shell of plastic material only reproducing the shape of the second monochromatic portion of the shell; in both cases, the plastic material being injected into the mold through one or more injection points located at the concave face of the shell, inside the perimeter of the second monochromatic portion, which is bounded by an at least partly corrugated-profile outer surface.