Light source module and ultraviolet light fluid processing device

A light source module comprising:

• a substrate having a center region and an outer region located outward of the center region;
• light sources positioned on an upper surface of the substrate and comprising a plurality of first light emitting parts;
• and
• an optical member positioned above the substrate such that the light sources are located between the substrate and the optical member, the optical member comprising light control parts that comprise a plurality of first light control parts,
• wherein each of the plurality of first light control parts overlaps with a respective one of the plurality of first light emitting parts in a top view so as to constitute a respective one of a plurality of first stacked bodies, positioned in the outer region,
• wherein, in each of the plurality of first stacked bodies, the first light control part comprises:
• a first incident surface that is planar in shape and that faces the first light emitting part;
• and
• a first emission surface that is curved to be convex in a direction away from the first incident surface,
• wherein, in each of the plurality of first stacked bodies, in any cross section along a first axis that passes through a center of the first emission surface in the top view and that is perpendicular to the first incident surface, both sides of the first emission surface with respect to the first axis have a same curvature, and
• wherein, in at least one of the plurality of first stacked bodies, an optical axis of the first light control part is non-parallel to the first axis.