An optical connector includes a substrate, a photoelectric element and a positioning element on the substrate, a lens element, and an optical fiber. The positioning element defines a through hole, in which the photoelectric element is received to allow visual inspection for determining if the photoelectric element is positioned to a designated position in relation to the positioning element, and includes a positioning structure. The lens element includes an incident surface, an emitting surface, a reflecting surface, a locating structure and a first lens formed in the incident surface, and a second lens formed on the emitting surface and optically aligned with the first lens via the reflecting surface. The lens element is precisely positioned on the positioning element by matching the locating structure with the positioning structure, to align the first lens with the photo electric element. The optical fiber is aligned with the second lens.