Abstract: A photoelectric converter connecting device including an elongated receptacle for receiving an optical converter unit and an optical fiber ferrule. The optical converter unit includes a lens holder, a lens fixedly connected to the lens holder by press molding, and a base including a photoelectric element. The photoelectric converter connecting device is assembled by heating and press molding the lens into the lens holder, then positioning and welding the base to hermetically seal the photoelectric element within the lens holder in a proper orientation with respect to the lens. The base is then welded to the elongated receptacle. Because the lens is press molded, the optical characteristics are more reliable than prior art index distribution type lenses.