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:
Nov. 25, 2014
Filed:
Apr. 30, 2012
Humitake Mitobe, Kanagawa, JP;
Yuusuke Furuki, Kanagawa, JP;
Humitake Mitobe, Kanagawa, JP;
Yuusuke Furuki, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
Disclosed is an optical film in which a minute interference unevenness is reduced. The optical film comprises a transparent film having a thickness of 10 μm to 150 μm, and a first layer and a second layer, in this order, on the transparent film, wherein values of in-plain mean refractive indices thereof satisfy the formula: the second layer>the first layer>the transparent film; the difference in in-plane mean refractive indices between the first layer and the second layer and the difference in in-plane mean refractive indices between the first layer and the transparent film are each 0.02 or more; and the optical thickness D of the first layer satisfies the formula: 270×N−150−75 nm≦D≦270×N−150+75 nm (1≦N≦8 where N is a natural number).