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

摘要

The set comprising a semi-finished optical element, a removable overlay (12), a blocking device (13) and a molding device (56) having a molding face (57) having the same shape as a contact face (19) of the blocking device (13).;The 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 (57) of the molding device (56), 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 (13).