A drive device comprising: a fixed section; a first optical wireless communication unit that is provided in the fixed section; a first movable unit that is adapted to be movable relative to the fixed section in a first direction; a second optical wireless communication unit that is provided in the first movable unit and is adapted to wirelessly communicate with the first optical wireless communication unit; a non-contact power supply unit that supplies power to a power receiving unit provided in the first movable unit from a power transmission unit provided in the fixed section in a non-contact manner; a second movable unit that is provided in the first movable unit and is adapted to be movable relative to the first movable unit in a second direction different from the first direction; and a fourth optical wireless communication unit that is provided in the second movable unit, wherein an optical axis of an optical signal between the first optical wireless communication unit and the second optical wireless communication unit is parallel to the first direction, characterized by a third optical wireless communication unit that is provided in the first movable unit and is connected to the second optical wireless communication unit, wherein an optical axis of an optical signal between the third optical wireless communication unit and the fourth optical wireless communication unit is parallel to the second direction, the power transmission unit of the non-contact power supply unit includes a pair of power transmission electrodes (52, 53), an inductor that is electrically connected to the pair of power transmission electrodes (52, 53), and an AC power supply that supplies AC power to the pair of power transmission electrodes (52, 53), the power receiving unit of the non-contact power supply unit includes a pair of power receiving electrodes (55, 56) that face the pair of power transmission electrodes (52, 53), respectively, the non-contact power supply unit supplies the power to the power receiving unit from the power transmission unit using an electric field coupling method, and the first optical communication unit and the second optical communication unit are adapted to multiplex a plurality of pieces of data and to communicate with each other. a fixed section; a first optical wireless communication unit that is provided in the fixed section; a first movable unit that is adapted to be movable relative to the fixed section in a first direction; a second optical wireless communication unit that is provided in the first movable unit and is adapted to wirelessly communicate with the first optical wireless communication unit; a non-contact power supply unit that supplies power to a power receiving unit provided in the first movable unit from a power transmission unit provided in the fixed section in a non-contact manner; a second movable unit that is provided in the first movable unit and is adapted to be movable relative to the first movable unit in a second direction different from the first direction; and a fourth optical wireless communication unit that is provided in the second movable unit, wherein an optical axis of an optical signal between the first optical wireless communication unit and the second optical wireless communication unit is parallel to the first direction, characterized by a third optical wireless communication unit that is provided in the first movable unit and is connected to the second optical wireless communication unit, wherein an optical axis of an optical signal between the third optical wireless communication unit and the fourth optical wireless communication unit is parallel to the second direction, the power transmission unit of the non-contact power supply unit includes a pair of power transmission electrodes (52, 53), an inductor that is electrically connected to the pair of power transmission electrodes (52, 53), and an AC power supply that supplies AC power to the pair of power transmission electrodes (52, 53), the power receiving unit of the non-contact power supply unit includes a pair of power receiving electrodes (55, 56) that face the pair of power transmission electrodes (52, 53), respectively, the non-contact power supply unit supplies the power to the power receiving unit from the power transmission unit using an electric field coupling method, and the first optical communication unit and the second optical communication unit are adapted to multiplex a plurality of pieces of data and to communicate with each other.