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:
Oct. 22, 2013
Filed:
Jan. 06, 2010
Wayne Robert Tompkin, Baden, CH;
Michael Scharfenberg, Nuremberg, DE;
Ludwig Brehm, Adelsdorf/Deutschland, DE;
Andreas Schilling, Hagendorn, CH;
Wayne Robert Tompkin, Baden, CH;
Michael Scharfenberg, Nuremberg, DE;
Ludwig Brehm, Adelsdorf/Deutschland, DE;
Andreas Schilling, Hagendorn, CH;
OVD Kinegram AG, Zug, CH;
Abstract
The invention concerns a security element () having a top side and an underside and a process for the production thereof. The security element has a transparent layer () with a non-homogenous refractive index, in which a plurality of Bragg planes are formed by a refractive index variation. The transparent layer () is of a layer thickness of between 5 μm and 200 μm and the transparent layer () has a plurality of first zones () of a smallest dimension of less than 300 μm, which are arranged in accordance with a first grid raster in a one-dimensional or two-dimensional succession in mutually adjacent relationship and in which the Bragg planes of the transparent layer are respectively shaped to provide a respective transmissive optical imaging function.