Patent ID: 7118293

Claim:
An optical module, to which an optical plug that is part of an optical transmission path is attached, so as to transmit and receive signal light via the optical transmission path for information communication, comprising: a transparent substrate having light transmittance properties with respect to a wavelength of a signal light; an optical socket, which is arranged on one side of the transparent substrate and to which the optical plug is attached, the optical socket having guide surfaces to position the optical plug, the guide surfaces include two surfaces substantially parallel to each other and substantially orthogonal to the another surface of the transparent substrate, and one surface substantially parallel to the another surface of the transparent substrate; an optical element, which is arranged on another side of the transparent substrate and emits the signal light to the one side of the transparent substrate according to a supplied electrical signal, or generates an electrical signal according to the intensity of the signal light supplied from the one side of the transparent substrate; and a reflective portion, which is arranged on the one side of the transparent substrate and changes a path of the signal light emitted from the optical element at substantially 90 degrees to guide the signal light to the optical transmission path, or changes a path of the signal light emitted from the optical transmission path at substantially 90 degrees to guide the signal light to the optical element.