Thomson-csf

Pascal Joffre

Jean-Pierre Huignard

Jean-Claude Lehureau

Brigitte Loiseaux

Daniel Dolfi

Christophe Nicolas

Cecile Joubert

Michele Labeyrie

Gerard Illiaquer

UHF phase shifter and application to an array antenna

A color display device comprises a source of light simultaneously emitting several ranges of chromatic components and a spatial light modulator comprising several dots, each dot comprising at least one sub-pixel per range of chromatic component to be displayed. Between the light source and the spatial light modulator there are provided at least one chromatic separator angularly separating the light of the different chromatic range along different directions, a lens focusing the light of the different chromatic ranges at distinct points or along distinct lines contained in a determined plane, at least one spatial filter located along this determined plane and selectively filtering the light of the different chromatic ranges, and an array of lenses, each enabling the focusing of the light of each chromatic range substantially on a sub-pixel.

Color display device with intervening lens and spatial filter or with

The disclosed deflector includes a thin film of liquid crystal on either side of which there is positioned at least one plane of electrodes, the assembly forming an array of elementary, quadripolar phase-shifters placed side by side, their electrodes being taken to different control potentials, generating a spatial modulation of the phase of the beam going through the deflector.

Liquid crystal electro-optical deflector having electrode array and comb

Growing community of inventors

Palaiseau, France

Pascal Joffre