Combination lens preparation tool has a cutting ring and a polishing core on a common shaft with the core axially adjustable by means of a pressure membrane

摘要

The tool rotates on a hollow shaft (3) and a cutting ring (8) forms the surface of a revolving lens after which air pressure through the shaft presses the elastic membrane (19) against the polishing core (12) to enable the polishing pads (18) to contact the lens surface.