Verfahren und Gerät zum Messen einer Brillenfassung

摘要

An arithmetic and control circuit 600 calculates an angle theta of inclination of one of lens frames 501, 501 of an eyeglass frame 500 from the maximum and minimum of height data Zn of frame configuration information L (o rho n, o theta n, Zn) about the lens frame (left lens frame) 501. If the angle theta exceeds a given angle beta , the arithmetic and control circuit 600 adjusts a frame holder 100 holding the eyeglass frame 500 so as to make the angle theta smaller than the given angle beta . After that, the arithmetic and control circuit 600 again calculates height data Zn in the direction of a Z-axis relative to radius vector information (o rho n, o theta n) to obtain first true frame configuration information L (o rho n', o theta n, Zn) about the lens frame 501 in three dimensional directions. Further, the arithmetic and control circuit 600 calculates a radius vector data difference DELTA rho n ( DELTA rho n = rho n' - rho n) per rotation angle theta n and adds the resultant data difference DELTA rho n to rho n of frame configuration information R (o rho n, o theta n, Zn) about the other lens frame (right lens frame) 501 per rotation angle theta n to obtain true frame configuration information R ((o rho n + DELTA rho n) , o theta n, Zn) about the other lens frame 501.