Fiber-optic device for illuminating a light permeable information-bearing medium, such as a traffic, information or advertising sign

A fiber-optic device for illuminating a light permeable information-bearing medium comprising at least one panel operating as a display device, in which light propagates parallel to a display plane thereof from the fiber-optic device, which has means for distributing light in the display plane and on which transparent information entities are mounted;

• wherein said fiber-optic device comprise a plurality of standardized modules (3,4) according to display requirements;
• wherein said fiber-optic device a comprises a plurality of multi-arm light guides and respective light outlet bodies for said multi-arm light guides acting as optical attachments for said multi-arm light guides;
• and
• wherein said light outlet bodies comprise means for adjusting propagation angles for the light passing from the multi-armlight guides into the at least one panel, so that light intensities over an entire angular range of said propagation angles are uniform;
• and
• wherein said light outlet bodies each have a truncated conical central portion and a conically tapered extended section connected to said central portion, said conically extended section having an end surface providing a light outlet surface for the light passing therethrough;
• whereby the light is distributed uniformly in the display plane in the at least one panel.