US 12,235,153 B2
Control system for an active shielding screen
Quentin Tricas, Moissy-Cramayel (FR); Patrice Foutrel, Moissy-Cramayel (FR); Philippe Besnier, Paris (FR); Xavier Castel, Rennes (FR); and Claire Le Paven, Rennes (FR)
Assigned to CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITE DE RENNES, Rennes (FR); and SAFRAN ELECTRONICS & DEFENSE, Paris (FR)
Appl. No. 18/281,218
Filed by CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITE DE RENNES, Rennes (FR); and SAFRAN ELECTRONICS & DEFENSE, Paris (FR)
PCT Filed Feb. 16, 2022, PCT No. PCT/FR2022/050284
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/189717, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 2102339 (FR), filed on Mar. 11, 2021.
Prior Publication US 2024/0151577 A1, May 9, 2024
Int. Cl. G01J 1/02 (2006.01); H05K 9/00 (2006.01)
CPC G01J 1/02 (2013.01) [H05K 9/0058 (2013.01); H05K 9/0064 (2013.01); H05K 9/0071 (2013.01); G01J 2001/0276 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for controlling the activation/deactivation of an electromagnetic shielding screen provided with an activation/deactivation device for a porthole or a protective window of an optoelectronic equipment, comprising:
an electromagnetic sensor for receiving a radiofrequency electromagnetic field, with a bandwidth adapted to a cut-off band of said shielding screen corresponding to a range of electromagnetic fields to be blocked,
a detector-rectifier connected to the electromagnetic sensor, with a sensitivity higher than a minimum value of the power of an electromagnetic field to be blocked by means of said electromagnetic shielding screen,
said electromagnetic sensor and detector-rectifier being configured, in the presence of an electromagnetic field with a power exceeding said minimum value, for capturing the electromagnetic energy supplied by said electromagnetic field with a power exceeding said minimum value for powering and activating said activation/deactivation device for activating/deactivating the electromagnetic shielding screen using said electromagnetic energy supplied by said electromagnetic field with a power exceeding said minimum value.