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:
Sep. 21, 2004
Filed:
Apr. 16, 2002
Applicant:
Inventors:
Assignee:
Sola International Holdings, Limited, Lonsdale, AU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 9/00 ;
U.S. Cl.
CPC ...
B32B 9/00 ;
Abstract
The invention relates to coated optical elements, coatings therefor and methods of producing such coatings, the coatings having improved characteristics of adhesion and of resistance to abrasion. In a preferred embodiment the coating includes a plurality of superimposed layers, namely: a hardcoat layer, a thin adhesion layer, a first dielectric layer including a material having a high refraction index selected from the group comprising: Cr O , TiO , ZnSe, ZnS and mixtures thereof, wherein x is a number comprised between 1 and 2 and y is a number comprised between 1 and 3; and a second dielectric layer having a refraction index lower than the refraction index of the second material.