Arrangement for directed output or introduction of light into light conductor, has at least part of transition surface between parallel boundaries with convex prismatic or convex cross-section

摘要

The arrangement has a flat light collection part (4), e.g. of glass, quartz and/or plastic, with two parallel boundaries and a transition surface (5b, 5a) between them, whereby the shape of the interface (6) between the boundaries can be a parabola or part of an ellipse with at least one focal point. At least the part of the transition surface between the two parallel boundaries at which light from the source (2) is not totally reflected for envelope lines perpendicular to the boundaries has a convex prismatic or convex curved cross-section between the two parallel boundaries.