JIG, METHOD AND DATA GENERATING APPARATUS FOR CALIBRATING EYEGLASS FRAME SHAPE MEASURING APPARATUS, EYEGLASS FRAME SHAPE MEASURING APPARATUS AND EYEFRAME SHAPE MEASURING/CALIBRATING SYSTEM

摘要

To provide a calibration jig which can perform three-dimensional calibration of measurement errors in a spectacle frame shape measuring apparatus. The calibration jig (30) is used for calibrating measurement errors of the spectacle frame shape measuring apparatus for measuring a shape of a spectacle frame, etc. A trace groove traced by a measuring probe of the spectacle frame shape measuring apparatus is a frame groove (20) formed in an inner circumference of rims (2A and 2B) of the spectacle frame and provided for engaging with the bevel of a spectacle lens. The rims are secured to a frame body (31) having rigidity higher than that of the rim. The frame groove has a displacement r in the radial direction, a displacement ¸ in the rotational direction, and a displacement z in the height direction.