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. 29, 2016
Filed:
Mar. 30, 2012
Nobuyuki Kobuchi, Higashiosaka, JP;
Keishi Yoshikawa, Higashiosaka, JP;
Koichiro Oka, Higashiosaka, JP;
Nobuyuki Kobuchi, Higashiosaka, JP;
Keishi Yoshikawa, Higashiosaka, JP;
Koichiro Oka, Higashiosaka, JP;
YAMAMOTO KOGAKU CO., LTD., Osaka, JP;
Abstract
An object of the present invention is to improve uneven coloring by polarization color due to birefringence of a polarization optical article. Disclosed is a polarization optical article in which uneven coloring by polarization color has been improved, the polarization optical article being a multi-layered polarization optical article including at least a linear polarization functional portion, a retardation functional portion and a back-up resin portion, characterized in that the linear polarization functional portion, the retardation functional portion and the back-up resin portion are arranged in order from an objective side toward an ocular side. The linear polarization functional portion is, for example, a linear polarizer, the retardation functional portion is, for example, a retardation sheet, and the retardation functional portion has, for example, a retardation of 1,000 nm or more. The back-up resin is a polycarbonate resin, a polyamide resin or the like.