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:
Mar. 19, 2013
Filed:
Apr. 16, 2009
Hiroyuki Yoshimi, Ibaraki, JP;
Kentarou Takeda, Ibaraki, JP;
Hiroaki Sawada, Ibaraki, JP;
Masaki Hayashi, Ibaraki, JP;
Hiroyuki Yoshimi, Ibaraki, JP;
Kentarou Takeda, Ibaraki, JP;
Hiroaki Sawada, Ibaraki, JP;
Masaki Hayashi, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Abstract
A video image evaluation equipment of the present invention is capable of converting circularly-polarized light emitted from a circularly polarizing light source into linearly-polarized light so as to transmit an absorption-type linear polarizer by a wavelength plate to be incident on a liquid crystal panel. This makes it possible to enter and reflect light emitted from the circularly polarizing light source on the liquid crystal panel without loss, which leads to display brighter video images than conventional ones.