Centre National De La Recherche Scientifique

Safran Electronics & Defense

Université De Rennes 1

Université De Rennes

Safran Electronics & Defense Boulogne

Centre National De La Recherche Scientifique-Cnrs

Patrice Foutrel

Philippe Besnier

Xavier Castel

Cyril Dupeyrat

Yonathan Corredores

Claire Le Paven

Quentin Tricas

A system for controlling the activation/deactivation of an electromagnetic shielding screen of a porthole or a protective window of an optoelectronic equipment, which includes, a radiofrequency electromagnetic sensor, with a bandwidth adapted to a cut-off band of said shielding screen corresponding to a range of electromagnetic fields to be blocked, connected to a detector-rectifier with a sensitivity higher than a minimum value of the power of an electromagnetic field to be blocked by means of said shielding screen and a device for activating/deactivating said electromagnetic shielding screen, said detector-rectifier being configured, in the presence of the electromagnetic field with a power exceeding said minimum value, to activate said device for activating/deactivating the electromagnetic shielding screen by capturing the electromagnetic energy supplied by said electromagnetic fields with a power exceeding said minimum value.

Control system for an active shielding screen

A shielding element comprises a rigid substrate and at least one electrically conductive two-dimensional structure which is placed on one of the faces of the substrate. The substrate and the electrically conductive two-dimensional structure are such that the shielding element has optical-transmission and shielding-efficiency values at least one of which varies between two zones of the shielding element. Such a shielding element enables easier assembly of a detection system comprising multiple optical sensors.

Optically transparent electromagnetically shielding element comprising a plurality of zones

An optically transparent electromagnetic shield assembly comprising an electrical connection device with variable electrical resistance. The electrical connection device electrically connects a conductive two-dimensional structure, which covers a transparent substrate, to a shell portion which is electrically conductive. The resistance of the connection device can be adjusted, either initially for a detection system for which the shield assembly is intended or in real time while the shield assembly is in use, according to an RF radiation intensity.

Optically transparent electromagnetic shield assembly

Growing community of inventors

Boulogne Billancourt, France

Patrice Foutrel