| 摘要 |
PROBLEM TO BE SOLVED: To provide a light guide body for an edge-light type surface light source device capable of easily controlling light emitted from a light-emitting surface so as to improve luminance and luminance balance, or reduce the luminance unevenness of the surface light source device and easily manufacture a mold member for molding.SOLUTION: At least one of a light reflecting surface 44 and the light-emitting surface has a plurality of lens rows 44a extending along a direction perpendicular to a light incident end face 41 and mutually arranged nearly in parallel. Each of a plurality of convex structures 45 arranged on the light reflecting surface 44 has both ends 451, 452 in a direction perpendicular to the light incident end face 41, a top 453 which is located between the both ends and higher than both the ends, and a ridge 454 extending through the top between both the ends. Furthermore, a portion including the ridge 454 in a cross-sectioned shape crossing, at a right angle, a direction perpendicular to the light incident end face 41 is formed so as to overlap with the cross-section shape at a lower position. |
