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:
Jun. 05, 2018
Filed:
Mar. 17, 2015
Tomoegawa Co., Ltd., Tokyo, JP;
Tsubasa Sakano, Shizuoka, JP;
Masahide Sugiyama, Shizuoka, JP;
Tomoegawa Co., Ltd., Tokyo, JP;
Abstract
In an anisotropic optical film including two or more anisotropic light diffusion layers where a linear transmittance varies depending on an incident light angle, each of the anisotropic light diffusion layers has a matrix region and a plurality of pillar regions that differ in refractive index from the matrix region, at least two types of anisotropic light diffusion layers (a) and (b) that differ in aspect ratio between a short diameter and a long diameter at a cross section perpendicular to an orientation direction of the pillar regions are used as the anisotropic light diffusion layers, the aspect ratio between the short diameter and the long diameter in the pillar regions is made less than 2 in the anisotropic light diffusion layer (a), and the aspect ratio between the short diameter and the long diameter in the pillar regions is made 2 or more and 20 or less in the anisotropic light diffusion layer (b).