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. 29, 2017
Filed:
Oct. 23, 2013
Essilor International (Compagnie Generale D'optique), Charenton-le-pont, FR;
Centre National DE LA Recherche Scientifique (Cnrs), Paris, FR;
Marius Peloux, Charenton-le-Pont, FR;
Pierre Chavel, Palaiseau, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Paris, FR;
Abstract
A system includes a simultaneously bifocal diffractive lens component having a first focal point, a second focal point and a plurality of diffractive zones including a central zone and a plurality of annular concentric zones surrounding the central zone, the lens component having a first optical power and a second optical power associated with the first and second focal points respectively, the first and second focal points respectively corresponding to points of convergence of the most luminous orders of diffraction generated by the lens component for a nominal wavelength, the first system focal point and the second system focal point having a position dependent upon the value of the first optical power and the second optical power of the lens respectively, the central zone having a surface area value determined as a function of the pupil of the optical system, of the first optical power and the second optical power.