Security system, particularly for valuable documents

US8077364B2 · kind B2 · utility

Assignee

• GIESECKE & DEVRIENT GMBH · DE

Inventors

• Irina Menz · Diedorf, DE
• Gunther Dausmann · Erding, DE
• Benedikt Ahlers · Berlin, DE
• Arnim Franz-Burgholz · Berlin, DE

Key dates

• Filing date: Apr 7, 2010
• Grant date: Dec 13, 2011
• Expiry date: Apr 7, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G07D7/207
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The invention relates to a security system especially for security documents, wherein a security element is provided in a carrier plane, that under incident light holographically reconstructs a pattern outside the carrier plane, in which concealed information is stored and having a flat transparent verification element which on flat contact with the security element makes the information stored therein visible. The invention further relates to a security element and a verification element for use in the security system and a security document fitted with the security system. The invention additionally relates to an apparatus and a method for reading out the concealed information which is stored holographically in the pattern reconstructed on the security element under incident light.