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:
May. 13, 2014
Filed:
Jul. 27, 2011
Bjorn Drobe, Charenton-le-Pont, FR;
Claude Pedrono, Charenton-le-Pont, FR;
Bjorn Drobe, Charenton-le-Pont, FR;
Claude Pedrono, Charenton-le-Pont, FR;
Essilor International (Compagnie Generale d'Optique), Charenton Cedex, FR;
Abstract
A method for determining by optimization a set of progressive ophthalmic lenses for a given user for whom a near vision power addition (Add) has been prescribed includes the following steps: measuring the user's near vision individual physiological parameters; determining an ergorama associating, on each lens, a target point in each look direction in worn conditions; determining a target power defect and a resulting target astigmatism for each direction of look under worn conditions, the target power defect and the resulting target astigmatism being determined from the user's measured physiological parameters; computing the power required for each lens for said ergorama by successive iterations to reach the target power defect and the target astigmatism for each look direction.