Reflector, camera module including reflector, and electronic device including camera module

A reflector comprising:

• an incidence surface through which light enters;
• an exit surface through which light exits;
• a reflective surface configured to reflect the light entering through the incidence surface toward the exit surface;
• a plurality of side surfaces connected to the incidence surface, the exit surface, and the reflective surface;
• a protrusion protruding laterally from at least one side surface among the plurality of side surfaces, the protrusion comprising a first surface, and a second surface connecting the first surface and the at least one side surface;
• a gate area on the first surface of the protrusion;
• a corrosion area disposed on the at least one side surface, wherein the corrosion area does not overlap the gate area;
• and
• a parting line extending from the at least one side surface along at least part of an edge of the at least one side surface abutting the reflective surface and along the at least one side surface, and passing through the first surface of the protrusion.