Shift tolerant lens optimized for phase conjugating...

G - Physics – 03 – H

Patent

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G03H 1/16 (2006.01) G03H 1/26 (2006.01) G11B 7/0065 (2006.01)

Patent

CA 2662272

A new type of FT lens is provided that improves phase conjugation in holographic data systems. This type of FT lens has a uniquely large isoplanatic patch. This enables relaxed assembly tolerances, asymmetric reader/writer architectures, and compensation for tilted plate aberrations in the media.

L'invention concerne un nouveau type de lentille FT qui améliore une conjugaison de phase dans des systèmes de données holographiques. Ce type de lentille FT est doté d'une grande plage isoplanatique unique. Ceci permet des tolérances d'assemblage assouplies, des architectures de dispositif de lecture/écriture asymétriques, et une compensation d'aberrations de disque incliné sur le support.

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