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. 26, 2023
Filed:
Aug. 08, 2018
Applicant:
Essilor International, Charenton-le-pont, FR;
Inventors:
Pierre Fromentin, Bangkok, TH;
Hélène Maury, Charenton-le-pont, FR;
Francisco De Ayguavives, Charenton-le-pont, FR;
Thanisararat Saleesung, Bangkok, TH;
Assignee:
Essilor International, Charenton-le-pont, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/111 (2015.01); G03B 21/625 (2014.01);
U.S. Cl.
CPC ...
G02B 1/111 (2013.01); G03B 21/625 (2013.01);
Abstract
The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and an improved light transmission in the visible range. The substrate comprises an external layer in which particles are embedded into the polymer matrix, the refractive index of the particles Rbeing lower than the refractive index of the polymer matrix R.