LENS GRINDING APPARATUS

摘要

A lens grinding apparatus comprising edge thickness measuring means for, in a photoelectrical and non-contact manner, measuring the edge thickness of the lens to be ground after completion of rough grinding, and a computing means for computing a predetermined position of the lens edge as a distance value from a predetermined movable origin in the direction of the axis of the lens shaft of the carriage on the basis of the data on the edge thickness obtained from the edge thickness measuring means, characterized in that the carriage is arranged to be capable of moving downwardly such that a predetermined position of the line of the edge surface of the lens agrees with the groove bottom of the V-shaped groove when bevel grinding is performed.