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:
Nov. 20, 2007
Filed:
May. 02, 2002
Idriss El Hafidi, Strasbourg, FR;
Romualda Grzymala, Strasbourg, FR;
Lhassan Elouad, Strasbourg, FR;
Patrick Meyrueis, Strasbourg, FR;
Idriss El Hafidi, Strasbourg, FR;
Romualda Grzymala, Strasbourg, FR;
Lhassan Elouad, Strasbourg, FR;
Patrick Meyrueis, Strasbourg, FR;
Research Investment Network, Inc., Long Beach, CA (US);
Abstract
The present invention comprises an apparatus and method for recording information on a multi-layer diffractive optics memory to extend storage capacity. A composite mirror device comprises a plurality of sets of mirror elements. Each one of the mirror elements of the sets is configured to direct a reference beam to a point of the multi-layer memory at one of a plurality of angles. A plurality of planes is associated with the plurality of sets. There is one plane per set, each plane being defined for each of the sets of mirror elements so that the paths formed from the mirror elements of the set to the point lie in the plane. Each of the planes is separated from its neighbor by an angle selected to avoid crosstalk.