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:
May. 29, 2012
Filed:
Apr. 05, 2007
René Staub, Hagendorn, CH;
Wayne Robert Tompkin, Baden, CH;
Andreas Schilling, Hagendorn, CH;
Ludwig Brehm, Adelsdorf, DE;
Achim Hansen, Zug, CH;
René Staub, Hagendorn, CH;
Wayne Robert Tompkin, Baden, CH;
Andreas Schilling, Hagendorn, CH;
Ludwig Brehm, Adelsdorf, DE;
Achim Hansen, Zug, CH;
OVD Kinegram AG, Zug, CH;
Abstract
Described is a process for the production of a multi-layer body having a volume hologram with at least two different items of image information, wherein a photosensitive layer () of the multi-layer body is directly or with the interposition of a transparent optical medium () brought into contact with the front side of a master (), in which interlaced regions with different asymmetrical surface structures or kinoform structures are shaped, which embody the at least two different items of image information. The photosensitive layer () and the master are exposed with a coherent light beam () whereby a volume hologram is formed in the photosensitive layer (). Also described are a master for the production of the multi-layer body and a security element having said multi-layer body.