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. 14, 2019
Filed:
Oct. 27, 2015
Roger D. Hersch, Epalinges, CH;
Thomas Walger, Marseilles, CH;
Théophane Besson, Fully, CH;
Valentin Flauraud, Allaman, CH;
Juergen Brugger, Vufflens-la-Ville, CH;
Roger D. Hersch, Epalinges, CH;
Thomas Walger, Marseilles, CH;
Théophane Besson, Fully, CH;
Valentin Flauraud, Allaman, CH;
Juergen Brugger, Vufflens-la-Ville, CH;
Ecole Polytechnique Fédérale Lausanne (EPFL), Lausanne, CH;
Abstract
The present invention describes methods and apparatuses for creating superposition shape images by superposed base and revealing layers of lenslet gratings. The superposition shape images form a message recognizable by a human observer or by an image acquisition and computing device such as a smartphone. The superposition shape images may be created by different superposition techniques ranging from 1D moiré, 2D moiré and level-line moiré superposition techniques to lenticular image and phase shift superposition techniques. Moiré superposition techniques enable creating superposition shape images at different apparent depth levels. Applications comprise the protection of documents and valuable articles against counterfeits, the creation of eye-catching advertisements as well as the decoration of buildings and exhibitions.