Examples, ultraviolet light emitting device； And a reflective member including a reflective surface forming an obtuse angle with an upper surface of the ultraviolet light emitting device, wherein the upper surface includes a first center point intersecting the optical axis of the ultraviolet light emitting device, and the reflective surface includes a concave curved surface. And, the curved surface includes a first point and a second point farther from the ultraviolet light emitting element than the first point, and the first path connecting the first point and the second center point on the optical axis and the optical axis are A third path forming the acute angle, the second path connecting the second point and the second center point, and the optical axis forming a second acute angle, and the third path connecting the first point and the first irradiation point on the optical axis and the The optical axis forms a third acute angle, a fourth path connecting the second point and a second irradiation point on the optical axis, and the optical axis forms a fourth acute angle, and the first irradiation point is the first center point and the second Center point The second irradiation point is disposed at the same distance from the second center point in the opposite direction to the first irradiation point, and the first acute angle, the second acute angle, the third acute angle, and the fourth acute angle Discloses an ultraviolet irradiation module that satisfies Equations 1 and 2 below. [Equation 1] 0.6 <；θ 1 / θ 2 <；0.75 (θ 1 : first acute angle, θ 2 : second acute angle) [Equation 2] 1.05 <；θ 3 / θ 4 <；1.21 (θ 3 : 3rd acute angle, θ 4 : 4th acute angle)실시 예는, 자외선 발광소자； 및 상기 자외선 발광소자의 상면과 둔각을 이루는 반사면을 포함하는 반사부재；를 포함하고, 상기 상면은 상기 자외선 발광소자의 광축과 교차하는 제1 중심점을 포함하고, 상기 반사면은 오목한 곡면을 포함하고, 상기 곡면은 제1 지점, 및 상기 제1 지점보다 상기 자외선 발광소자로부터 먼 제2 지점을 포함하고, 상기 제1 지점과 상기 광축 상의 제2 중심점을 연결하는 제1 경로와 상기 광축은 제1 예각을 이루고, 상기 제2 지점과 상기 제2 중심점을 연결하는 제2 경로와 상기 광축은 제2 예각을 이루고, 상기 제1 지점과
