Patent ID: 8601835
Filing Date: 2013-12-10
Classification: C03B,F21S

Abstract:
1. A method of making a lens with guaranteed optical properties, the lens having a convex lens surface and a planar lens surface, especially for a motor vehicle headlight, said method comprising the steps of: (a) providing an apparatus for making the lens, said apparatus including (b) feeding a glass melt drop into the concave basin; (c) after the feeding of step (b), precise pressing both sides of the glass melt drop in the concave basin together with the upper mold part and the press die; (d) during the precise pressing of the lens immersing the press die in the glass melt drop during the precise pressing so that a part of the glass material is displaced into the intervening space to form a supporting rim with predetermined installation dimensions on the lens, and so that the supporting rim protrudes beyond a highest point of the planar lens surface.