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. 16, 2009
Filed:
Dec. 09, 2004
Michel Papuchon, Villebon/Yvette, FR;
Jean-paul Pocholle, La Norville, FR;
Michel Papuchon, Villebon/Yvette, FR;
Jean-Paul Pocholle, La Norville, FR;
Thales, , FR;
Abstract
A laser active optronic system has an emission channel for the emission by an emission source of a laser beam which illuminates a target, and a receiving channel for receiving the wave backscattered by the target. An optical switching device is positioned in the receiving channel to receive the backscattered wave and has an optical gain medium and pumping means for pumping the gain medium. The gain medium is absorbent at the wavelength of the laser and becomes substantially transparent when it is pumped to allow the switching device to be actuated in the on mode or off mode respectively. A control unit for controlling the pumping means, allows the switching device to be actuated in the on mode in at least one temporal window of predetermined duration, triggered at a predetermined instant after the start of emission of the illuminating laser beam.