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1. (WO2014198889) METHOD FOR OPTIMIZING AN OPTICAL SURFACE

Pub. No.:    WO/2014/198889    International Application No.:    PCT/EP2014/062368
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Sat Jun 14 01:59:59 CEST 2014
IPC: G02C 7/02
G02C 13/00
Applicants: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
Inventors: MURADORE, Fabien
Title: METHOD FOR OPTIMIZING AN OPTICAL SURFACE
Abstract:
Method for optimizing an optical surface comprising: - an initial optical surface providing step, - a working optical surface defining step, during which a working optical surface is defined to be equal to the initial optical surface, - a first surface cost function providing step, during which a first surface cost function of the nth derivative of the surface is provided, - a set of surface cost functions providing step, during which a set of surface cost functions function of at least one criterion over evaluation zones is provided, - a global surface cost function evaluation step during which a global surface cost function equal to a weighted sum of the previous cost functions is evaluated, - a modifying step, during which the working surface is modified, wherein the evaluation and modifying steps are repeated so as to minimize the global surface cost function.