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:
Aug. 30, 2011
Filed:
Sep. 25, 2007
Diane DE Gaudemaris, Paris, FR;
Cyril Guilloux, Paris, FR;
Fabien Muradore, Paris, FR;
Essilor International (Compagnie Générale d'Optique), Charenton Cedex, FR;
Abstract
A method for determining an ophthalmic lens includes choosing an initial lens with a first face and a second face and defining an initial surface for the second face of the lens with a central zone of diameter Dand a peripheral zone of inner diameter Dgreater than the diameter Dof the central zone, each point of the central zone and the peripheral zone having an altitude defined with respect to an axis (Z) normal to the second face of the lens and having the centre of the central zone as its origin, the altitude of the peripheral zone being defined as the minimum of the points situated on the diameter D; the peripheral zone having a maximum radius of curvature comprised between the maximum radius of curvature of the first face and the maximum radius of curvature of the central zone.