Light-emitting module and surface-emitting light source

A light-emitting module comprising:

• a light-guiding plate having an upper surface with a first hole and a lower surface opposite to the upper surface, the light-guiding plate having a rectangular shape in a top view;
• a light-emitting element disposed at the lower surface of the light-guiding plate and opposite to the first hole;
• and
• a light-reflective layer,
• wherein the first hole comprises:
• a first portion;
• and
• a second portion between the first portion and the upper surface of the light-guiding plate,
• wherein the light-reflective layer is located in the first portion of the first hole,
• wherein the first portion is a depression having a shape of an inverted cone, inverted pyramid, or inverted frustum of a cone or pyramid, the depression having a first opening at a boundary between the first portion and the second portion and a first lateral surface inclined with respect to the upper surface of the light-guiding plate, and
• wherein a shape of the first opening in the top view is defined by a first axis parallel to a short side of the rectangular shape of the light-guiding plate and a second axis parallel to a long side of the rectangular shape and shorter than the first axis.