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:
May. 20, 2025
Filed:
Jul. 06, 2021
Essilor International, Charenton-le-pont, FR;
Corporation DE L'ecole Polytechnique DE Montreal, Montreal, CA;
Sébastien Chiarotto, Charenton-le-pont, FR;
Jolanta Klemberg-Sapieha, Montreal, CA;
Martin Caron, Montreal, CA;
Essilor International, Charenton-le-pont, FR;
Corporation de l'Ecole Polytechnique de Montréal, Montreal, CA;
Abstract
The invention relates to an article comprising a substrate having at least one main surface coated with a layer L of a material M obtained by vacuum deposition, by co-evaporation, of at least one metallic compound A chosen from alkaline-earth metal fluorides and of at least one organic compound B, the material M having a refractive index at the wavelength of 632.8 nm ranging from 1.38 to 1.47. According to the invention: