Security device

US9731538B2 · kind B2 · utility

Assignee

• SECTAGO GMBH · DE

Inventors

• Frank Seils · Zell im Wiesental, DE
• Markus Koch · Neu-Ulm, DE
• Peter Rogin · Riegelsberg, DE

Key dates

• Filing date: Jan 20, 2014
• Grant date: Aug 15, 2017
• Expiry date: Jan 20, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49828
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A security device includes a plurality of diffractive surface elements arranged on a carrier element. Each individual diffractive surface element can have a three-dimensional surface structure. A portion of the plurality of the diffractive surface elements can form a first surface element group. An orientation of the diffractive surface elements in the first surface element group can be matched to each other wherein they make a first point of an associated symbol to be represented visible. A plurality of additional surface element groups each can make a respective additional point of the symbol to be represented visible. The symbol can include a sum of all points represented by the first surface element group and the plurality of additional surface element groups. A movement of the symbol can be perceived by the continuous change in an angle of incidence of the light or an observation angle.