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:
Mar. 15, 2016
Filed:
Jan. 29, 2014
Hoya Lens Manufacturing Philippines Inc., Cavite, PH;
Keiichi Suzuki, Kamiina-gun, JP;
EHS LENS PHILIPPINES, INC., Cavite, PH;
Abstract
The optical article includes an optical substrate comprising a concave surface with a radius of curvature of equal to or greater than 350 mm on one side and a convex surface with a radius of curvature of equal to or greater than 120 mm on the other side, a first antifouling layer directly or through at least one additional layer on the concave surface, and a second antifouling layer directly or through at least one additional layer on the convex surface, and satisfies the conditions below:0.01≦μL1≦0.120.1≦μL2μL1<μL2 wherein μL1 denotes a coefficient of static friction of a surface of the first antifouling layer, and μL2 denotes a coefficient of static friction of a surface of the second antifouling layer.