Process for manufacturing a headlight lens

摘要

The invention relates to a method for producing an optical lens element, in particular for illuminating purposes, in particular for producing a headlight lens for a vehicle headlight, in particular for a motor vehicle headlight. A preform made of a transparent plastic, which is amorphous in particular, is molded in an injection mold using an injection molding method. The preform is removed from the injection mold, in particular before the average temperature of the preform falls below the melting temperature of the plastic and/or the flow temperature of the plastic, and the preform is subsequently pressed into the lens element, in particular the blank, using a final contour mold.

主权项

1. A method for manufacturing a headlight lens for a vehicle headlight for imaging a light-dark-borderline on a roadway, the method comprising:
providing an injection mold having an injection mold cavity, the injection mold cavity having a thickness being at least 100% of the diameter of the injection mold cavity; providing a final contour mold having mold parts; injection-molding a blank from transparent plastic material by means of the injection mold; removing the blank from the injection mold; forming the headlight lens for imaging a light-dark-borderline on a roadway by subsequently press-molding the blank by moving together said mold parts of the final contour mold.