The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2017
Filed:
Nov. 09, 2012
Essilor International (Compagnie Generale D'optique), Charenton le Pont, FR;
Jean Sahler, Charenton le Pont, FR;
Agnès Ladous, Charenton le Pont, FR;
Bruno Amir, Charenton le Pont, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton le Pont, FR;
Abstract
A method for determining a semi-finished lens blank, including the steps of: determining, for a given material, a set of faces (S, S, . . . S) to be defined for a line of ophthalmic lenses, each face (Si, Sj) being defined for a corresponding subset (SEi, SEj) of wearer data and/or frame data; determining, for each face (Si, Sj), a minimum thickness requirement (EnvSi, EnvSj) necessary to produce all the lenses of the corresponding subset (SEi, SEj); determining combinations of two faces (Si, Sj) to be paired; defining a 'double-faced' semi-finished lens blank (SF(ij)) consisting of two paired defined faces (Si and Sj) and including the minimum thickness requirements (EnvSi and EnvSj) respectively determined for the faces, in a manner that allows producing all the lenses of the subsets (SEi and SEj) corresponding to said faces.