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:
Dec. 27, 2005
Filed:
Oct. 25, 2004
Cécile Joubert, Orsay, FR;
Brigitte Loiseaux, Bures S/Yvette, FR;
Philippe Robin, Bourg la Reine, FR;
Claude Bricot, Villejuif, FR;
Cécile Joubert, Orsay, FR;
Brigitte Loiseaux, Bures S/Yvette, FR;
Philippe Robin, Bourg la Reine, FR;
Claude Bricot, Villejuif, FR;
Thales, Paris, FR;
Abstract
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.