CURVED SURFACE MACHINING DEVICE, OPTICAL ELEMENT AND OPTICAL ELEMENT MOLD FORMED BY USING THE DEVICE, AND CALIBRATION METHOD OF PARALLEL LINK MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide a curved surface machining device provided with rigidity required for shape forming and constituted to be smaller and lighter than a conventional curved surface machining device, a calibration method, and optical element and optical element mold manufactured by the device.;SOLUTION: In this curved surface machining device, a work table 34 for mounting a fθlens mold 2 and a machining machine bed 37 are connected by a telescopic strut 31, and a parallel link mechanism for controlling position and inclination of the work table 34 by elongation, contraction and turning of the strut 31 is provided. A polishing tool 1 is scanned, while controlling the inclination of the work table 34 so that an angle formed by a normal line at a contact with the polishing tool 1 of the fθlens mold 2 and the polishing tool 1 may be kept constant.;COPYRIGHT: (C)2006,JPO&NCIPI