Patent ID: 7125314

Claim:
An eyeglass lens processing apparatus for processing a periphery of an eyeglass lens to fit the eyeglass lens into a rim of an eyeglass frame, comprising: a chuck shaft that chucks and holds the lens; an input portion that inputs a 2-D outline shape which is a projection shape of the rim in its warp direction and a layout of an optical center of the lens with respect to the 2-D outline shape; an edge measurement portion that measures a path of an edge position of the lens chucked and held by the chuck shaft based on the input 2-D outline shape and the input layout of the optical center; and an arithmetic operation portion that obtains an inclination angle of the measured edge path or a temporary bevel path obtained based on the measured edge path with respect to a center axis of the chuck shaft, obtains a corrected 2-D outline shape which is a projection shape onto a plane perpendicular to the center axis of the chuck shaft based on the obtained inclination angle and the input 2-D outline shape, and obtains a final bevel path to form a bevel in the periphery of the lens chucked and held by the chuck shaft at the optical center based on the obtained corrected 2-D outline shape.