Essilor International

Pierre Bercher

Gilles Le Saux

Jean-Pierre Chauveau

Sebastien Fricker

Sebastien Maurice

Disclosed is a method for optimizing a geometrical parameter of at least one semi-finished optical lens in a set of such lenses having a designated lens material, the semi-finished optical lens to be optimized has a designated base curve and an initially determined geometry allowing manufacturing finished ophthalmic lenses for an initial set of ophthalmic parameters, the method including: providing order proportion data reflecting each ophthalmic prescription in the initial set; providing a desired proportion selection rate; determining a subset of ophthalmic parameters in the initial set corresponding to the desired proportion selection rate; determining the optimized value of a geometrical parameter of an optimized semi-finished optical lens having the designated base curve and lens material and allows manufacturing finished ophthalmic lenses for each ophthalmic prescriptions in the subset of ophthalmic parameters; outputting the determined optimized value as the optimized geometrical parameter of said semi-finished optical lens.

Method for optimizing a geometrical parameter of a semi-finished optical lens

A method for evaluating an ophthalmic lens for a given wearer according to a visual performance parameter includes providing wearer's data for the given wearer. The method further includes providing a visual performance parameter tolerance range for the wearer. The method further includes providing an ophthalmic lens to be evaluated, the ophthalmic lens being characterized by opto-geometrical features. The method further includes computing a value of the visual performance parameter for the lens to be evaluated on the basis of a model. The method further includes evaluating the ophthalmic lens by comparing the computed value of the visual performance parameter with the visual performance parameter tolerance range.

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Charenton-le-Pont, France

Pierre Bercher