| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminous flux control member capable of preventing generation of luminance unevenness.SOLUTION: A plurality of lattice-like convex parts 13 are formed on a rear face 12 (a lens bottom face) of the luminous flux control member 4. An incident angle of light incident into the rear face 12 of the luminous flux control member 4 is made uneven by the lattice-like convex parts 13. With this, light incident from the rear face 12 is scattered without being converged to be irradiated from the luminous flux control member 4. |
