Illumination box for an avionic display device

Abstract

Abstract The invention relates to an illumination box for an avionic display device, this device comprising a liquid crystal screen transmitting the light supplied by the illumination box. The illumination box comprises: - a first illumination device, comprising three fluorescent tubes (1, 3, 5) having a phosphor emitting a white light permitting a polychromatic display, with a luminous intensity sufficient to obtain a good contrast in daylight; - a switching device (13) to extinguish the first illumination device at night; - a second illumination device comprising two fluorescent tubes (2, 4), of size less than that of the preceding ones, supplying an intensity less than that emitted by the first daytime illumination device, and of green colour, having a particularly low infrared content, in order to be compatible with the use of low-light binoculars which amplify the infrared content. Application to display devices incorporated in instrument panels of military aircraft. <IMAGE>

Inventors

• 👤 Jean Buisson
• 👤 Jean-Marie Soubrier

Bibliographic Details