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:
Jun. 08, 1976
Filed:
Sep. 20, 1974
Applicant:
Inventors:
Philippe Bied-Charreton, Limours, FR;
Luigi D'Auria, Chevreuse, FR;
Francois Micheron, Gif-sur-Yvette, FR;
Jean Pierre Huignard, Chatenay-Malabry, FR;
Assignee:
Thomson-CSF, Paris Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H / ; G02F / ;
U.S. Cl.
CPC ...
350-35 ; 3403 / ; 350161 ;
Abstract
The device comprises a flexible magnetic sheet reflective on one side, at least one magnetic circuit associated with at least one zone of the sheet for deforming the sheet by a modification of the magnetic flux in the magnetic circuit. Exciting means controlled by electrical data vary the magnetic flux so as to modify the reflecting conditions in said zone as a function of the electrical data. A unit for recording holographical optical memories is disclosed which employs this device.