SURFACE LIGHT EMISSION DEVICE AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a high intensity surface light emission device and a method of manufacturing it. SOLUTION: This surface emission device includes a line light source 2 disposed on the side of a light conducting plate 1 made of transparent resin. A light scattering layer 3 forming a gradation pattern on the back surface of the light conducting plate 1 is buried so as to be fitted into the back surface of the light conducting plate 1, increasing an area ratio of the gradation pattern in proportion to the distance from the line light source 2. In this case, the light scattering layer 3 is formed of expansive body whose thickness increases in proportion to the distance from the line light source 2.