| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminous flux control member capable of facilitating correction of the shape of a reflection surface.SOLUTION: A luminous flux control member of the present invention comprises an incident region and an emission region. The incident region includes a plurality of convex stripes each having an incident surface, a reflection surface, and a ridgeline. The convex stripes are disposed to connect two adjacent diagonals of a virtual quadrangle. At least one reflection surface is arranged in parallel to an extension direction of the convex stripes, and includes a plurality of split reflection surfaces reflecting the light incident on the incident surface toward the emission region; and one or two or more stepped surfaces disposed at positions between the two adjacent split reflection surfaces at dead angles with respect to a travel direction of the light incident on the incident surface. |
