Thales

Patrick Rocca

Hugues Lebrun

Vincent Toraille

Maxime Vaillant

A device for backlighting a liquid-crystal matrix array of a flat screen for viewing in day- or night-vision mode with NVIS compatibility includes a light guide GL which comprises a main cuboid plate shape PP assembled together with at least one right-angled triangular auxiliary prism PAwhich comprises at least one reflective face, and which is arranged together with the main plate to define, on the same lateral face of the plate, two distinct injection windows, one injection window Ifor a nighttime light source and one injection window Ifor a daytime light source. The nighttime light is injected into the plate, by reflection within or off the auxiliary prism in the direction of the respective injection window (I). The lateral face of the prism that directly receives the light emitted by the nighttime source may comprise an optical filter Fformed collectively over its surface by deposition of dielectric films.

Lighting device compatible with night-vision equipment with lateral injection windows for daytime and nighttime light

In a method for addressing an LCD display in color sequential mode, the color frames of a received video sequence are rearranged to form a display sequence applied to the LCD display. The arrangement of the color frames in the display sequence is such that the succession of the colors of the color frames and/or the duration of the color frames is random. Such a method may find application to direct view screens.

Growing community of inventors

Moirans, France

Patrick Rocca