LUMINOUS FLUX CONTROL MEMBER, LIGHT EMISSION DEVICE, AND ILLUMINATION DEVICE

摘要

This luminous flux control member has: an incident surface; two reflection surfaces that reflect some of the light incident on the incident surface in mutually opposite directions that are substantially perpendicular to the light axis of a light emission element; and two emission surfaces disposed facing each other sandwiching the two reflection surfaces. The incident surface has: a first incident surface that intersects with the light axis of the light emission element; and two second incident surfaces that sandwich the first incident surface and are disposed in a Y-axis direction that the two emission surfaces face. A plurality of first projecting ridges having ridgelines that are substantially parallel to the Y-axis direction are disposed on the first incident surface. A plurality of second projecting ridges having ridgelines that are substantially parallel to the light axis are disposed on the two emission surfaces, or a plurality of third projecting ridges having ridgelines that are substantially intersecting with the first projecting ridges are disposed on at least a part of the two reflection surfaces.