Patent ID: 6785585
Filing Date: 2004-08-31
Classification: B24B,B28D,G02C,G05B

Abstract:
A device to at least one of mark and drill holes in a workpiece spectacle lens, the device comprising:a spectacle lens edging machine including a computer to control form grinding of the workpiece spectacle lens, a grinding chamber, at least one grinding wheel in the grinding chamber, and a rotatable spectacle lens holding shaft which can be adjusted radially and axially relative to the grinding wheel and locked; an arrangement to at least one of mark and drill the holes into the workpiece spectacle lens, the arrangement including an encoding arrangement operable to detect an angle of the spectacle lens holding shaft, including an angle sensor operable to acquire an angle of rotation of the spectacle lens holding shaft; and a positioning device to position the arrangement, the positioning device including a position sensor to acquire a radial distance of the spectacle lens holding shaft from the grinding wheel, and including a position sensor to acquire an axial position of the spectacle lens holding shaft with reference to the grinding wheel, and an input device to accept input coordinates including at least one of rectangular input coordinates and polar input coordinates of the holes into the computer.