DEVICE FOR EDGING AN OPTICAL LENS AND PROCESS FOR PRODUCING OPTICAL LENSES

摘要

A device (10) for processing an edge (E) of a blank for a lens (L), in particular spectacle lens, comprises a receiving device (12) for holding the lens blank blocked on a block piece (S) in a working space (14) of the edge processing device, a machining device (16) by means of which a tool (W) for the machining of the edge can be driven, and a movement device (18) for producing a relative movement between the lens blank and the tool during the machining of the edge in the working space. To simplify and improve handling in connection with the blocking of the treated, in particular edge-processed lens, the edge processing device has a blocking device (20) by means of which the lens in the working space can be blocked off from the block piece. In addition, a manufacturing method for spectacle lenses is proposed, the Abblock main step comprises a piercing sub-step in which, starting from the edge surface of the block piece adjacent to or near a first surface of the lens, a puncture is generated, the further blocking as a predetermined separation point between the spectacle lens and block piece serves.