In this surface light source device, light is incident from a plurality of point light sources 2 arranged on a one side end surface of a light guide plate 1, is reflected on a light reflecting surface 11 on a rear surface of the light guide plate 1, and is emitted from a front surface of the light guide...http://www.google.ca/patents/US6508564?utm_source=gb-gplus-sharePatent US6508564 - Surface light source device and adjusting method of chromaticity thereof
