Patent ID: 6539656
Filing Date: 2003-04-01
Classification: F21Y,G02B,G09F

Abstract:
A luminaire comprising a panel of a light-transmitting material,said panel including a light emission window, a rear wall opposite said light emission window and edge surfaces which are situated between the light emission window and the rear wall, at least one first edge surface of the panel being light transmitting, at least one first light source being associated with the at least one first edge surface, and in operation, light originating from the at least one first light source being incident on the at least one first edge surface and spreading in the panel, wherein in the panel a plurality of deformities are provided for coupling light out of the panel via the light emission window, said deformities being clustered so as to form at least one first cluster of deformities, and said at least one first cluster having a configuration which corresponds to a shape of a first light symbol, and wherein at least one second edge surface is light-transmitting, at least one second light source being associated with the at least one second edge surface, in operation, the at least one first cluster of deformities coupling out light originating from the at least one first light source to form the first light symbol, and in operation, a second cluster of deformities coupling out light originating from the at least one second light source to form a second light symbol.