A SET INCLUDING A SEMI-FINISHED OPTICAL ELEMENT AND A BLOCKING DEVICE; AND A METHOD FOR PROVIDING SUCH A SET.

摘要

The set further comprises a molding device having a molding face having the same shape as a contact face (19) of the blocking device (13). A removable overlay (12) of rigid material has a first face (17) attached to a first face (14) of the semi-finished optical element (11) and a second face (18) opposite to the first face (17) having the same shape as the contact face (19) of the blocking device (13), said set being configured for having a first subset configuration in which the second face (18) of the removable overlay (12) is in molding contact with the molding face of the molding device, then a second subset configuration in which the second face (18) of the removable overlay (12) is free and then a third subset configuration in which the second face (18) of the removable overlay (12) is retained in contact with the contact face (19) of the blocking device.