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. 03, 2015
Filed:
Nov. 12, 2010
Hidekazu Hoshino, Yokohama, JP;
Itsuo Takeuchi, Yokohama, JP;
Tokio Sakauchi, Yokohama, JP;
Seiya Shibuya, Yokohama, JP;
Tohru Ida, Yokohama, JP;
Hidekazu Hoshino, Yokohama, JP;
Itsuo Takeuchi, Yokohama, JP;
Tokio Sakauchi, Yokohama, JP;
Seiya Shibuya, Yokohama, JP;
Tohru Ida, Yokohama, JP;
NHK Spring Co., Ltd., Yokohama-shi, JP;
Abstract
An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter. A cholesteric liquid crystal layer is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer having an optical anisotropy is provided at an upper position overlapping with the specific polarization light reflection layer. An image A fanned by an area having an optical anisotropy different from that of surroundings is formed at the optical anisotropic layer. When the identification medium is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium is observed via a circular polarization filter, the image can be seen to have a specific color by the influence of the optical anisotropy.