An optical element includes a transparent substrate, a first light-blocking film attached to at least one surface of the transparent substrate and having a first circular opening, and a first lens portion disposed on the at least one surface of the transparent substrate, the first lens portion being composed of ultraviolet curable resin and having a first lens-functioning surface. The first lens portion is disposed such that the first lens-functioning surface covers the first opening and overlaps an area of the first light-blocking film that surrounds the first opening.