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:
Dec. 29, 2020
Filed:
May. 11, 2017
Corporation DE L'ecole Polytechnique DE Montreal, Montreal, CA;
Essilor International, Charenton-le-Pont, FR;
William Trottier-Lapointe, Montreal, CA;
Oleg Zabeida, Montreal, CA;
Ludvik Martinu, Montreal, CA;
Jolanta Klemberg-Sapieha, Montreal, CA;
Karin Scherer, Charenton-le-Pont, FR;
ESSILOR INTERNATIONAL, Charenton-le-Pont, FR;
CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREAL, Montreal, CA;
Abstract
An optical article including a substrate with two main surfaces, at least one of which is covered by a polymer coating having an outer surface, said coating including a first superficial layer beneath the outer surface having a first refractive index nand a second layer beneath the first superficial layer having a second refractive index n, with n<nand having the lowest refractive index of said polymer coating, and said coating exhibiting antireflective properties due to the difference between refractive indexes nand n, said refractive index difference within the coating resulting from a plasma, corona, and/or an ion beam treatment of an initial polymer coating, through the outer surface. Also, a method for manufacturing this optical article.