Patent ID: 8352065

Claim:
A method for generating a trimming setpoint for trimming an ophthalmic lens ( 30 ) in order to mount the ophthalmic lens in a surround ( 11 , 21 ) of a spectacle frame ( 10 , 20 ), the method to be implemented by an electronic or computer device and comprising the steps of: a) acquiring a shape of a first longitudinal profile ( 50 ) of said surround; b) constructing, on a two-dimensional projection ( 40 ) of said first longitudinal profile ( 50 ), at least two predetermined geometrical figures ( 41 - 43 ), by adjusting dimensions of said predetermined geometrical figures to dimensions of said two-dimensional projection ( 40 ); c) calculating differences (d 41 -d 43 ) between the two-dimensional projection ( 40 ) of said first longitudinal profile ( 50 ) and each of said predetermined geometrical figures ( 41 - 43 ); d) among target geometrical figures associated to trimming parameters, selecting a target geometrical figure that is closest to the first longitudinal profile ( 50 ) according to said differences (d 41 -d 43 ); and e) calculating said trimming setpoint according to the shape of the first longitudinal profile ( 50 ) and a trimming parameter associated with the selected target geometrical figure.