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:
Mar. 30, 2004
Filed:
Apr. 22, 2003
Stéphane Gosselin, Pleumer Bodou, FR;
Philippe Gravey, Lannion, FR;
Nicole Wolffer, Saint Quay Perros, FR;
Alan Lelah, Grenoble, FR;
France Telecom, Paris, FR;
Abstract
The invention concerns an optical switch for optical beams comprising a series of optical input channels ( ) and a series of optical output channels ( ), two optical index spatial modulating cells ( ) adapted to respectively deflect an optical beam coming out of an input channel and arriving onto an output channel, each series of optical channels ( ) being distributed according to two dimensions transverse to the direction of the channels and the index spatial modulating cells ( ) being each designed to produce deflections according to said two dimensions. The invention is characterised in that it comprises at least a convergent optical assembly ( ) overlapping one first of the two cells ( ) and whereof the focus, defined relative to the light path in the switch, is proximate to the plane of the other cell, and the or each convergent optical assembly ( ) has its optical center (X) bordering a deflecting cell ( ), substantially perpendicular to the center on one side of said cell.