Patent ID: 8015843

Claim:
A method for follow-up treatment of the contour of the surface of at least one as-formed convex optical lens, the method comprising: providing the as-formed convex optical lens which is made of glass or a glass-type material and which has a convex lens surface delimited by a circumferential line abutting on a plane section surrounding said circumferential line and which has an opposing surface of the lens facing the convex lens surface, and wherein said optical lens is produced by means of a glass-flow process or by means of contactless hot stamping of a thermoplastic material and has as a result of said process an elliptical gradient in the region of said circumferential line, placing along said circumferential line of the as-formed convex optical lens on said plane section a means matching said circumferential line and at least laterally bordering said convex lens surface, performing a temperature treatment comprising heating said as-formed convex optical lens to a temperature of at least the transformation temperature of said glass or glass-type material, wherein pressure equalization prevails between said convex lens surface and said opposing surface of the lens, and said temperature treatment is conducted in conjunction with said means bordering said circumferential line in such a manner that said elliptical gradient is reduced or completely eliminated, removing said means from said optical lens after a period of time, during which said optical lens undergoes said temperature treatment and subsequent cooling below said transformation temperature wherein the steps are performed in the recited sequence and result in the modification of the elliptical gradient.