Ecran et son procédé de commande

TITRE : Ecran et son procédé de commande Ecran (100) comprenant : - une première couche génératrice d'image (105) éclairée par un premier guide de lumière (115) surfacique et un second guide de lumière (155) surfacique pour éclairer la couche génératrice d'images (105) parallèles ou empilés, - une première installation d'éclairage (120) couplée au premier guide (115) et comportant des sources de lumière (125) rangées pour émettre dans une première direction (130) et une seconde installation d'éclairage (160) couplée au second guide (155) et comportant des sources de lumière (165) en rangées pour émettre dans une seconde direction d'éclairage (170), différente de la première direction (130). Figure 1 The invention relates to a screen, comprising an image generating layer for generating an image to be output, and a planar shaped first light guide for illuminating the image generating layer, and a planar shaped second light guide for illuminating the image generating layer, wherein the first light conductor and the second light conductor are arranged parallel to each other and additionally or alternatively as a stack one above the other. Furthermore, the screen comprises at least one first light device, which is coupled or coupleable to the first light conductor and comprises a plurality of light sources arranged one above the other for outputting light in a first radiation direction, the first light device being arranged substantially parallel to one side of the first light conductor. Furthermore, the screen comprises at least one second light device which is coupled or coupleable to the second light conductor and which comprises a plurality of light sources arranged one above the other for outputting light in a second radiation direction, in particular wherein the second radiation direction differs from the first radiation direction.