Method for producing an optical lens

摘要

The method involves a processing stage with cutting tool which works grooves into the workpiece (23) wherein the speed of the latter is raised or remains constant from a start value at the start of processing to an end value towards the end of processing whereby the speed is between 750 rpm and 6000 rpm, 750 rpm and 1500 rpm , 750 and 3000 rpm or between 1500 and 3000 rpm. The distance from two adjoining grooves is changed or remains constant from a start value at the start of processing to an end value at the end of processing and has a value between 0.05 mm and 0.2 mm, 0.05 mm and 0.1 mm or 0.15 mm and 0.2mm. The advancing speed in the radial direction of the workpiece is kept constant.