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. 19, 2006
Filed:
Aug. 01, 2003
Yukihiro Takahashi, Tokyo, JP;
Ken-ichi Shinde, Tokyo, JP;
Yukihiro Takahashi, Tokyo, JP;
Ken-ichi Shinde, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
An optical member and process for making it including an optical substrate, a multilayered antireflection film provided on the optical substrate, and a water-repellent layer provided on an outermost layer of the multilayered antireflection film, wherein the outermost layer of the multilayered antireflection film is a layer containing, as a major component, silicon dioxide; and the water-repellent layer includes a first layer containing, as major components, a fluorine-substituted alkyl group-containing organosilicon compound and a silicon-free perfluoropolyether and a second layer provided on the first layer and which is in direct contact therewith, which contains, as a major component, a silicon-free perfluoropolyether.