Patent ID: 9671618
Date: 2017-06-06
CPC Classifications: G01M,G02C

Claim:
1. A method for determining the values of a set of n optical parameters (P 1 , P 2 , . . . , P n ) of an ophthalmic lens to be manufactured, n being an integer greater than or equal to 1, the method comprising: an ophthalmic lens data providing step during which data representing an ophthalmic lens is provided, including data corresponding to a surface of the ophthalmic lens; an ophthalmic lens manufacturing step during which an ophthalmic lens is manufactured, the ophthalmic lens comprising at least two optical surfaces at least one of which is manufactured based on the data of the corresponding surface of the ophthalmic lens; an optical surface measuring step during which the at least one manufactured surface of the ophthalmic lens is measured; a surface errors determining step during which a set of m surface error parameters (α an optical parameter determining step during which each optical parameter of the set of optical parameters is determined by: with P i the value of the ith optical parameter of the manufactured optical lens, P i,0 the value of the ith optical parameter of the ophthalmic lens to be manufactured, the value of the derivative of P i with respect to the jth surface error parameter α j on the surface and Δα j the value of the jth surface error parameter, and A i a combination of terms of order greater or equal to 2 for each P i .