This light bundle control member comprises an incident surface, an exit surface, a plurality of grooves, and a plurality of ridges. At least one of the incident surface and the exit surface has an elliptical cross section perpendicular to a central axis of the light bundle control member. The grooves are arranged on the back side of the light bundle control member successively from the central axis side toward the outer edge side of the light bundle control member. Each of the grooves includes a step surface positioned on the central axis side, and an inclined surface positioned on the outer edge side. The ridges are respectively arranged on the inclined surface of each of the grooves. Each of the ridges includes a first reflecting surface, a second reflecting surface, and a ridge line arranged between the first reflecting surface and the second reflecting surface.