Light-emitting module and planar light source

A light-emitting module comprising:

• a light guide member including a first surface, a second surface on an opposite side of the first surface, and a first through hole penetrating from the first surface to the second surface;
• a light source unit disposed in the first through hole of the light guide member;
• a first light-transmissive member disposed in the first through hole of the light guide member and covering the light source unit;
• a reflective member disposed above the light source unit and disposed above the first light-transmissive member;
• and
• a plurality of light guide members each including a first light guide portion, a second light guide portion, and a third light guide portion;
• and
• a third light-transmissive member adjacent to the second light guide portion and the third light guide portion,
• wherein in a plan view, an outer edge of the reflective member is located outside an outer edge of the light source unit,
• wherein the reflective member includes a resin member and a reflector having a refractive index lower than a refractive index of the resin member, and
• wherein the first light guide portion and the second light guide portion are adjacent to each other in a first direction, the first light guide portion and the third light guide portion are adjacent to each other in a second direction orthogonal to the first direction, the third light-transmissive member and the third light guide portion are adjacent to each other in the first direction, and the third light-transmissive member and the second light guide portion are adjacent to each other in the second direction.