Method for deciding a bevel curve, method for determining...

Details Method for deciding a bevel curve, method for determining... Method for deciding a bevel curve, method for determining...

2006-08-01

2006-08-01

Nguyen, Dung Van (Department: 3723)

Abrading

Precision device or process - or with condition responsive...

With indicating

C451S042000

Reexamination Certificate

active

07083499

ABSTRACT:
When a forming a bevel on a lens, the value of the bevel curve is calculated based on the value of the curve of the concave face, a reference axis of the bevel curve is determined to be in the same direction as the curvature of the concave face, a reference position on the peripheral edge of the lens in the first portion having the minimum thickness is determined based on the thickness of the first portion, a correction for the initial reference axis of the bevel curve is obtained, an angle of inclination from the direction of the initial reference axis of the bevel curve is obtained based on the correction and the locus of the bevel is determined based on the value of the bevel curve, the reference position and the angle of inclination.

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S. Koller, European Search Report, European Patent Application No. 03 00 7793, dated Aug. 26, 2003, 3 pages.

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