Patent ID: 6099383
Filing Date: 2000-08-08
Classification: B24B,G02C,G05B

Abstract:
A lens grinding apparatus for processing a periphery of an eyeglass lens, comprising:input means for entering data on a processing shape of the lens;detecting means for detecting an edge position of the lens on the basis of the entered shape data;first calculating means for determining processing data on a rough and a fine processing of the lens on the basis of the edge position detected by said detecting means and the shape data entered into said input means;angular edge portion processing means which has a grinding wheel for processing angular edge portions of the finely processed lens and for moving a shaft of said grinding wheel relative to a shaft holding the lens;second calculating means for setting a plurality of zones of the lens and for performing different calculations in different zones such that an amount of processing of the angular edge portions is determined in correspondence with a radius vector angle of the lens; andmeans for controlling the processing of the lens on the basis of the results of calculation by said first and second calculating means.