The present invention provides an optical DVI cable and optical signal transmission equipment which can prevent the leakage of laser light to the outside. The optical DVI cable includes (1) a transmission side unit having a laser light emitting element unit, and configured and arranged to convert input electrical signals into optical signals and to transmits the optical signals, (2) a reception side interface unit configured and arranged to receive the optical signals transmitted from the transmission side interface unit, and (3) a connecting cable having metal wires to supply power to the laser light emitting element unit, and optical fibers to transmit optical signals. The transmission side unit may include a power supply terminal. In this case, the metal wires supply power to the laser light emitting element unit from the transmission side unit via the reception side unit.