To provide a grinding attachment of a lens by which the spectacle lens can be ground to fit a groove of a spectacle frame curved three- dimensionally and on which an adsorption jig can be mounted with a point mark applied under an existing condition of the attachment.
A mounting position of the adsorption jig to the spectacle lens is set not to be a geometrically central position of a lens frame, while spherical shape data required for grinding of the spectacle lens is adopted as data where the geometrically central position of the lens frame is established as center. The position of the adsorption jig is adapted to be changeable so that grinding may be carried out at an axis perpendicular to a front face curve formed by a refractive face at a front side of the spectacle lens.
FUKUMA YASUFUMI
YOSHINO TOSHIKAZU
