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:
Apr. 01, 2008
Filed:
Mar. 19, 2004
Mitsuhiro Nishida, Tokyo, JP;
Yukihiro Kusano, Roskilde, DK;
Nobuko Kato, Tokyo, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A method of producing an anti-reflection film includes forming a first layer on a transparent substrate, forming a second layer on the first layer, and forming the third layer on the second layer. When an optical admittance Y at a surface of the second layer is represented by, where i is the imaginary number unit,thicknesses and reflective indexes of the substrate, first layer, second layer, and third layer are selected so that x and y satisfy the following formula,0.9{()/2−()/2<1.1{()/2}where n is a refractive index of the third layer and nis a refractive index of an outer region at an outside of the anti-reflection film.