An optical connector comprising: a housing; a photoelectric conversion circuit board on which a photoelectric conversion element is mounted, the photoelectric conversion circuit board being housed in the housing; and a resin member made of a light transmissive synthetic resin and arranged on a plate surface of the photoelectric conversion circuit board so as to cover the photoelectric conversion element, the resin member including a sleeve to which a ferrule attached to an end of an optical fiber is fitted, wherein the sleeve of the resin member is arranged such that an axial direction thereof is substantially perpendicular to the plate surface of the photoelectric conversion circuit board, and the resin member integrally includes a lens on an axial line of the sleeve such that the lens faces the photoelectric conversion element, the optical connector further comprising: a shielding layer arranged to cover an entire surface of the photoelectric conversion circuit board opposite to a surface thereof on which the photoelectric conversion element is mounted, wherein the resin member includes an inner shield made of metal and arranged to face the photoelectric conversion circuit board and cover the photoelectric conversion element, wherein the inner shield includes a window at a position corresponding to an optical path extending between the lens and the photoelectric conversion element, wherein the inner shield includes board connection portions, and wherein the board connection portions are passed through the photoelectric conversion circuit board and connected to the electrically conductive path formed on the photoelectric conversion circuit board. a housing; a photoelectric conversion circuit board on which a photoelectric conversion element is mounted, the photoelectric conversion circuit board being housed in the housing; and a resin member made of a light transmissive synthetic resin and arranged on a plate surface of the photoelectric conversion circuit board so as to cover the photoelectric conversion element, the resin member including a sleeve to which a ferrule attached to an end of an optical fiber is fitted, wherein the sleeve of the resin member is arranged such that an axial direction thereof is substantially perpendicular to the plate surface of the photoelectric conversion circuit board, and the resin member integrally includes a lens on an axial line of the sleeve such that the lens faces the photoelectric conversion element, the optical connector further comprising: a shielding layer arranged to cover an entire surface of the photoelectric conversion circuit board opposite to a surface thereof on which the photoelectric conversion element is mounted, wherein the resin member includes an inner shield made of metal and arranged to face the photoelectric conversion circuit board and cover the photoelectric conversion element, wherein the inner shield includes a window at a position corresponding to an optical path extending between the lens and the photoelectric conversion element, wherein the inner shield includes board connection portions, and wherein the board connection portions are passed through the photoelectric conversion circuit board and connected to the electrically conductive path formed on the photoelectric conversion circuit board. a shielding layer arranged to cover an entire surface of the photoelectric conversion circuit board opposite to a surface thereof on which the photoelectric conversion element is mounted, wherein the resin member includes an inner shield made of metal and arranged to face the photoelectric conversion circuit board and cover the photoelectric conversion element, wherein the inner shield includes a window at a position corresponding to an optical path extending between the lens and the photoelectric conversion element, wherein the inner shield includes board connection portions, and wherein the board connection portions are passed through the photoelectric conversion circuit board and connected to the electrically conductive path formed on the photoelectric conversion circuit board.