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:
Aug. 02, 2011
Filed:
Nov. 17, 2008
Munehiro Shibuya, Kamiina-gun, JP;
Munehiro Shibuya, Kamiina-gun, JP;
Epson Toyocom Corporation, Tokyo, JP;
Abstract
An optical multilayer filter having an inorganic thin film composed of a plurality of layers on a substrate includes a fluorinated organic silicon compound film formed on a surface of the inorganic thin film, a low-density formation section forming a part of the inorganic thin film, having one or more layers including the most superficial layer of the inorganic thin film, the one or more layers being formed of at least one of a low-density titanium oxide layer and a low-density silicon oxide layer, and a high-density formation section forming another part of the inorganic thin film, disposed between the low-density formation section and the substrate, having silicon oxide layers with a density higher than the low-density silicon oxide layer and titanium oxide layers with a density higher than the low-density titanium oxide layer in a stacked manner. A total thickness of the low-density formation section is equal to or smaller than 280 nm.