| 摘要 |
A device for obtaining data related to the shape of the frame of a pair of spectacles, wherein the shape M of frame of spectacles is converted into numerical data by using spline interpolation functions, so that the shape M of the frame of a pair of spectacles is grasped in the factory for producing lenses, and that spectacle lenses having values and optimum thicknesses adapted to the frame of spectacles are prepared. |
