Light flux control member, light-emitting device, and illumination device

A light flux controlling member including a light flux controlling member main body and configured to control a distribution of light emitted from a light emitting element, the light flux controlling member main body comprising:

• two incidence surfaces disposed on both sides of a virtual plane as a boundary, the virtual plane including an optical axis of the light emitting element, the incidence surfaces being configured to allow incidence of a part of the light emitted from the light emitting element;
• a first projected line including a first inclined surface, a second inclined surface paired with the first inclined surface, and a first ridgeline configured to connect the first inclined surface and the second inclined surface, the first projected line being disposed such that the first ridgeline covers the light emitting element along the virtual plane at a position between the two incidence surfaces, the first projected line being configured to allow incidence of another part of the light emitted from the light emitting element;
• two total reflection surfaces formed at positions opposite to the light emitting element with the incidence surface therebetween, the two total reflection surfaces being configured to reflect a part of light incident on the incidence surface in two opposite directions which are substantially perpendicular to the optical axis;
• two light guiding parts disposed at respective opposing positions with the incidence surface, the first projected line and the total reflection surface therebetween, the two light guiding parts being configured to guide a part of the light incident on the incidence surface and light reflected by the total reflection surface;
• and
• two emission surfaces formed on an external surface of the light guiding part and configured to emit light guided by the light guiding part to outside of the light flux controlling member main body.