A photoelectric converter includes a circuit board, a laser diode electrical mounted on the circuit board, a supporting frame, an optical transmission member mounted on the supporting frame, a beam splitting assembly and an optical sensor positioned beside the beam splitting assembly. The laser diode, the beam splitting assembly and the optical sensor are received in a space cooperatively defined by the supporting frame and the optical transmission member. The laser diode emits optical signals. A part of optical signals is refracted by the beam splitter and transmitted to the optical transmission member, and the other part of optical signals is reflected by the beam splitter to the optical sensor.