Light conduction body and illumination unit with light conduction body

摘要

The body (31) has a region with a curved guideline. A curvature of the guideline is constant or decreases with the increase in the cross section of the body. A straight line cuts a light entry surface and penetrates a lateral area outside a light withdrawal surface. A longest surface line limiting the body in the region is longer than difference from the circle constant and the double of the largest limit angle of the total reflection of the material against the materials of an environment (1) adjacent to the body. The difference is divided by a maximum actual curvature of the surface line.