Patent · US Active

Process for manufacturing a headlight lens

US9421718B2 · kind B2 · utility

0Cited by

6References

31Claims

0Family size

Assignee

DOCTER OPTICS SE · DE

Inventors

Peter Mühle · Neustadt an der Orla, DE
Volker Schöppner · Verl, DE
Christian Leister · Paderborn, DE

Key dates

Filing date	Aug 8, 2013
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Aug 8, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/3055
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.