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:
Feb. 28, 2006
Filed:
Apr. 11, 2003
Laurent Guillermin, Paris, FR;
Sylvaine Millet, Soisy sous Montmorency, FR;
Laurent Guillermin, Paris, FR;
Sylvaine Millet, Soisy sous Montmorency, FR;
Essilor International (Compagnie Generale d'Optique), Charenton le Pont, FR;
Abstract
Process for bevelling at least one edge () of an optical face () of an ophthalmic lens (), in which the successive curvatures of the optical face () are plotted in the vicinity of and along the edge () to be bevelled. The edge () to be bevelled is scanned with a flat light beam () forming a linear light spot () on the optical face (), an image of the light spot () is simultaneously formed on optical reception elements (), the successive curvatures of the optical face () in the vicinity of the edge () are deduced from the successive positions of this image. This process includes a bevelling stage. Then the lens () is rotated about an axis (A), is brought into contact by its edge () with a bevelling tool, and the relative positioning of the lens () and of the tool is controlled according to the plots produced.