Optical element

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United States of America Patent

PATENT NO 9643445
APP PUB NO 20140340626A1
SERIAL NO

14447987

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An element for protection against forgery and/or copying is arranged on a substrate and includes an optically anisotropic layer which has at least two regions with different optical axes, characterized in that the substrate is a reflective polarizer. The optically anisotropic layer can include cross-linked liquid crystal monomers. The anisotropic layer can be placed on an orientation layer. The orientation layer can be in contact with the polarizer and can include a photo-oriented polymer network. A device for protection against forgery and/or copying is characterized in that an element as set forth above and an analyzer are arranged on the same substrate.

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Patent Owner(s)

Patent OwnerAddress
ROLIC AG6300 ZUG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schadt, Martin Seltisberg, CH 129 3190
Seiberle, Hubert Weil am Rhein, DE 60 1275

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