A light source unit is disclosed in an embodiment. The disclosed light source unit comprises: a fixing plate having an opening portion; a light emitting device disposed in an opening portion of the fixing plate; and an optical lens disposed on the fixing plate, wherein the fixing plate has a plurality of fixing portions, the optical lens includes: a bottom surface on the fixing plate; a concave recess on the opening portion of the fixing plate; a light incident surface around the recess; and a light exit surface for emitting the light incident to the light incident surface, the fixing plate and the bottom surface of the optical lens are coupled to each other, and the fixing plate is spaced from the light emitting device.