Patent ID: 6824268
Filing Date: 2004-11-30
Classification: G02C

Abstract:
A method for designing one or more surfaces of an ophthalmic lens, the method comprising:representing said surfaces with parameters; choosing a function in said parameters, said function including a term involving the power induced by said ophthalmic lens and a predetermined power distribution, a term involving the astigmatism induced by said ophthalmic lens and a predetermined astigmatism distribution, and one or more of the following terms: a term involving the magnification induced by said ophthalmic lens, a term involving the distortion induced by said ophthalmic lens, a term involving the distortion direction induced by said ophthalmic lens, a term involving the torsion induced by said ophthalmic lens, and a term involving the astigmatism direction induced by said ophthalmic lens; and optimizing said function with respect to said parameters.