Lighting panel for a display

摘要

There is provided a lighting panel having rectangular both surfaces one of which is a reflection surface and the other is a discharge surface, an edge light provided at a corner of the lighting panel. A plurality of prisms are circularly formed on the reflection surface of the lighting panel. Each of the prisms has a vertical angle theta comprising a first inclination angle theta1 on the edge light side and a second inclination angle theta2 opposite to the first inclination angle theta1. There is a following relationship between the first inclination angle theta1 and the second inclination angle theta2