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:
Apr. 04, 2006
Filed:
Aug. 13, 2002
Odile Primel, Vincennes, FR;
Maxime Pillie, Paris, FR;
Tony Dantas DE Morais, Saint Maur de Fosses, FR;
Leanirith Yean, Longjumeau, FR;
Odile Primel, Vincennes, FR;
Maxime Pillie, Paris, FR;
Tony Dantas De Morais, Saint Maur de Fosses, FR;
Leanirith Yean, Longjumeau, FR;
Essilor International, , FR;
Abstract
A lens has at least one insert (), which defines an optical path. For manufacturing the lens, the insert is first bonded to an overmould (). A polymer () is then moulded in a mould () formed on one of its faces from the overmould. After moulding, the overmould may be preserved and form part of the lens, if necessary after surface grinding. The overmould may also be separated from the lens; in this case, the lens is machined, removing at least part of the inserts. The lens obtained has an insert in a reproducible position, with an entrance or exit surface inducing no optical distortion.