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. 01, 2025
Filed:
Dec. 18, 2019
Applicant:
Essilor International, Charenton-le-Pont, FR;
Inventors:
William Trottier-Lapointe, Charenton-le-Pont, FR;
Alexis Theoden, Charenton-le-Pont, FR;
Philippe Romand, Charenton-le-Pont, FR;
Surin Maidam, Bangkok, TH;
Assignee:
Essilor International, Charenton-le-Pont, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/28 (2006.01); G02C 7/02 (2006.01);
U.S. Cl.
CPC ...
G02B 5/286 (2013.01); G02C 7/022 (2013.01);
Abstract
Disclosed is an optical article including a substrate having at least one main face coated with a reflective coating including a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, in which the thicknesses of the layers in the reflective coating have been optimized according to specific design rules in order to boost the abrasion resistance of the optical article.