| 摘要 |
PROBLEM TO BE SOLVED: To obtain a excellent surface light source device that has high brightness and a broad view angle. SOLUTION: This surface light source device contains a light guide 11, in which one surface of a front or back surface is a light emerging surface 11b and one end surface is a light incident surface 11a, two rod-shaped light sources 12 that are each arranged along the two light incident surfaces 11a of the light guide 11 and a reflecting member 14 arranged on the back surface of the light emerging surface 11b of the light guide 11. In the device, the light guide 11 in itself is equipped with a light output mechanism that outputs light, which is incident via the light incident surface 11a from the rod-shaped light source 12, out of the output surface, a output controlling mechanism that controls the amount of light output out of the light emerging surface 11b and a condensing mechanism that condenses light output out of the light emerging surface 11b. |
