Light conductor with a ribbon-shaped light emitting area

摘要

A light conductor with an input coupler which couples in light in such a way that inside the light conductor it is distributed into a first layer, parallel layers and into second layers, whereby each second layer is spanned by a perpendicular of the first layer and by a line located in the first layer, and with a light emitting area. Light is coupled such that it has a lower divergence in the second layers than in the first layers. There is a first deflection area between the input coupler and the light emitting area, which redirects light emitted from the input coupler incident on it in an angle bigger than the double of the critical angle of the total internal reflection. Further deflection areas are illuminated with light emitted from the first deflection area and direct the incident light into a preferred common direction for the further deflection areas.

主权项

1. A light conductor (10) with an input coupler (24, 26) which is arranged in such a way that divergent incident light is coupled into the inside of the light conductor in such a way that the coupled in light (12, 14) propagates inside the light conductor in planes that are parallel to a first plane, and in second planes, whereby each second plane is spanned by a perpendicular of the first plane and by a line located in the first plane, and with a light emitting area (18), said input coupler acting to produce light that is coupled in such a way that it has a lower divergence in the second planes than in the first planes, said light conductor including a first deflection area between the input coupler and the light emitting area (18), which redirects light emitted from the input coupler incident on the first deflection area (36) in an angle which is at least as big as the product of the value of the critical angle of the total internal reflection and the factor 2 and a plurality of further deflection areas (38) which are illuminated with light emitted from the first deflection area and which each direct the incident light from the first deflection area into a preferred common direction of illumination (z) so as to produce a parallel, aligned and homogenous light beam from said light conductor.