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:
Jul. 17, 2012
Filed:
Sep. 10, 2007
Jean-pierre Chauveau, Charenton-le-Pont, FR;
Fabienne Lievois, Charenton-le-Pont, FR;
Jean-Pierre Chauveau, Charenton-le-Pont, FR;
Fabienne Lievois, Charenton-le-Pont, FR;
Essilor International (Compagnie Generale d'Optique), Charenton-le-Pont, FR;
Abstract
A device and method for determining under wearing conditions at least one component of the orientation of a correcting ophthalmic lens of eyeglasses relative to the head of a future wearer. Provision is made for mounting a position-identification system () on the frame () and/or on a presentation lens fitted to the frame, which system includes at least one identification element () having at least one known geometrical characteristic, for capturing the image of the identification element in two dimensions in a vertical facial plane, for processing the captured image to measure the captured geometrical characteristic of the image of the identification element that depends on the known geometrical characteristic of the identification element, and for calculating at least one component of the orientation of the lens by comparing the captured geometrical characteristic with the known geometrical characteristic. A method of optically designing the correcting lens is disclosed.