Light control film formed with a security feature

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United States of America Patent

PATENT NO 9682592
SERIAL NO

14431502

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Abstract

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A light control film is described that is formed with at least one security feature therein. The security feature is not visible when the film is viewed at an incorrect angle. The security feature only becomes visible when the film is viewed at the correct viewing angle or range of viewing angles. A plurality of security features can be formed in the film at substantially the same location(s), but at different angles, so that each security feature only becomes visible when the film is viewed at the correct respective viewing angle or range of viewing angles. The light control film can be integrated into any type of document where resistance to counterfeiting and fraudulent alteration are important, such as plastic identification or credit cards, or passports.

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Patent Owner(s)

Patent OwnerAddress
ENTRUST CORPORATION1187 PARK PLACE SHAKOPEE MN 55379-3817

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bielesch, Ulrich Frücht, DE 5 40

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