Patent ID: 8157618
Filing Date: 2012-04-17
Classification: B24B,Y10T

Abstract:
1. An eyeglass lens processing apparatus for processing a bevel in a peripheral edge of an eyeglass lens, the apparatus comprising: a data input unit ( an edge position detecting unit ( a bevel curve setting unit ( a reference point setting unit ( a bevel path calculating unit ( a) obtains a first plane including a bisection point of a first line connecting the first and second points and perpendicular to the first line; b) obtains a second plane including a bisection point of a second line connecting the third and fourth points and perpendicular to the second line; c) obtains an intersection line LO at which the first and second planes intersect each other; d) obtains a bevel spherical surface Sf so that a center of the bevel spherical surface Sf having a radius of the bevel curve set by the bevel curve setting unit is located on the intersection line LO and the bevel spherical surface Sf passes through a desired edge position; and e) obtains the bevel path on the basis of the target lens shape data and the obtained bevel spherical surface Sf.