Patent ID: 6290569
Filing Date: 2001-09-18
Classification: B24B

Abstract:
An eyeglass lens grinding apparatus for processing a sunglass lens to fit into an eyeglass frame, said apparatus comprising:a frame shape data input unit which inputs frame shape data of an eyeglass frame;a lens edge measuring unit which obtains a lens edge position of the sunglass lens based on said frame shape data input by said frame shape data input unit;a processing data calculating unit which obtains lens processing data, indicative of a position of a bevel to be formed substantially at a center of an edge, based on said lens edge position obtained by said lens edge measuring unit and said frame shape data;a mode switching unit which switches over between a first mode in which the same processing is repeated using processing data of a previous processing, and a second mode in which new processing data is obtained based on a different frame shape data;a data storage unit which stores said processing data obtained by said processing data calculating unit;a grinding unit which grinds a lens; anda processing control unit, which, in the second mode, activates the lens edge measuring unit, obtains the new processing data by the processing data calculating unit and executes processing, and which, in the first mode, reads the previous processing data stored and held in the data storage unit and executes processing.