Finnegan, Henderson, Farabow, Garrett & Dunner
Method and apparatus for measuring a frame configuration
 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 Z.sub.n of frame configuration information L (.sub.o .rho..sub.n, .sub.o .theta..sub.n, Z.sub.n) 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 Z.sub.n in the direction of a Z-axis relative to radius vector information (.sub.o .rho..sub.n, .sub.o .theta..sub.n) to obtain first true frame configuration information L (.sub.o .rho..sub.n ', .sub.o .theta..sub.n, Z.sub.n) about the lens frame 501 in three dimensional directions. Further, the arithmetic and control circuit 600 calculates a radius vector data difference .DELTA..rho..sub.n (.DELTA..rho..sub.n =.rho..sub.n '-.rho..sub.n) per rotation angle .theta..sub.n and adds the resultant data difference .DELTA..rho..sub.n to .rho..sub.n of frame configuration information R (.sub.o .rho..sub.n, .sub.o .theta..sub.n, Z.sub.n) about the other lens frame (right lens frame) 501 per rotation angle .theta..sub.n to obtain true frame configuration information R ((.sub.o .rho..sub.n +.DELTA..rho..sub.n), .sub.o .theta..sub.n, Z.sub.n) about the other lens frame 501. 
Kabushiki Kaisha Topcon
B G B B G B G
B24B G02C B24B B24B G02C B24B G01B
inventional inventional inventional inventional inventional inventional inventional
Yasuo
Suzuki