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:
May. 21, 2019
Filed:
Apr. 24, 2013
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Shoichiro Ogumi, Tokyo, JP;
Junya Eguchi, Tokyo, JP;
Gen Furui, Tokyo, JP;
Seika Minakoshi, Tokyo, JP;
Yukimitsu Iwata, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-Ku, JP;
Abstract
Provided are: an optical film, wherein interference fringes can be suppressed from being generated, cloudiness is not observed, and a manufacture cost can be reduced. In accordance with one aspect of the present invention, there is provided an optical filmincluding a functional layer, wherein the functional layerhas a concavo-convex surfaceA; and in a state in which the concavo-convex surfaceA is irradiated with parallel light travelling in a direction sloped at 10° with respect to a normal direction N of the optical film, in an angle distribution of reflected light intensities measured in a plane including both directions of the normal direction N and the travelling direction T of the parallel light, a value obtained by subtracting ½ angle width from 1/100 angle width is 0.7° or more and 1.4° or less.