Patent ID: 8517582

Claim:
Method for manufacturing a headlight lens for a vehicle headlight, wherein the headlight lens comprises a lens body made from transparent material and having an essentially planar, optically operative surface as well as a convexly curved, optically operative surface, the method comprising manufacturing of a pre-form; reversing a thermal gradient of the pre-form; providing a first mold for pressing the convexly curved, optically operative surface; providing a second mold for pressing the essentially planar, optically operative surface, which second mold comprises a first mold section and an annular second mold section enclosing the first mold section; pressing the pre-form between the first mold and the second mold, wherein due to the pressing the headlight lens is formed, the headlight lens having an integrally formed lens edge, wherein, by means of an offset depending on a volume of the pre-form a step is pressed into the headlight lens between the second mold section and the first mold section, which step amounts to no more than 1 mm, and wherein the first mold section is set back with respect to the second mold section at least in a region of the offset.