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:
Sep. 15, 2015
Filed:
Aug. 22, 2012
Xavier Bultez, Charenton-le-Pont, FR;
Xavier Bultez, Charenton-le-Pont, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
Abstract
A method of surfacing a surface of a spectacle lens, includes a step of determining a fixed rotation speed (Vrot) of the lens based on geometric characteristics of the surface, wherein the step of determining the rotation speed (Vrot) includes the following steps: generating (), based on the geometric characteristics of the surface (), a file of geometric altitude values of the surface, the file being centered on a zero geometric altitude value at a predetermined reference point; determining () a value representative of the greatest difference (MaxHk) in geometric altitude values on the surface; deducing () the rotation speed (Vrot) from the value of the greatest difference (MaxHk) in geometric altitude values on the surface and from a geometric value of the cylinder at a predetermined far-vision control point.