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:
Jan. 09, 2024
Filed:
Jun. 13, 2019
Corporation DE L'ecole Polytechnique DE Montreal, Montreal, CA;
Essilor International, Charenton-le-Pont, FR;
William Trottier-Lapointe, Charenton-le-Pont, FR;
Bruce Faure, Charenton-le-Pont, FR;
Bill Baloukas, Montreal, CA;
Richard Vernhes, Montreal, CA;
Oleg Zabeida, Montreal, CA;
Ludvik Martinu, Montreal, CA;
Sasha Woodward, Montreal, CA;
Nicolas Desjardins-Lecavalier, Montreal, CA;
Julien Gagnon, Montreal, CA;
Corporation de l'Ecole Polytechnique de Montreal, Montreal, CA;
Essilor International, Charenton-le-Pont, FR;
Abstract
An optical article includes a substrate with front and rear main faces, one main face coated with a columnar micro- or nano-structured coating. The substrate and optical article are transparent in at least a part of the visible region ranging from 380 to 780 nm, along at least one incidence angle. The columnar micro- or nano-structured coating includes an array of columns including each a core and an upper layer covering the core, the core and the upper layer being structurally and/or chemically different and have light absorbing properties with an extinction coefficient 'k' ≥10-2 in the spectrum 250-2500 nm and are able to cause a change in transmission or in reflection of incident light through the optical article as a function of the angle of incidence of light. Also disclosed is a method for manufacturing an optical article including a columnar micro- or nano-structured coating.