Disclosed is a light emitting device and a method of manufacturing the same. The imaging unit comprises a two dimensional imaging device and a drive control unit. A control channel carries control information pertaining to the data channels. The system cancels the command in response to actuation of the retraction control. Connection is established so that a magnetic field generated when current flows from one end to the other end of the second electrode, a magnetic field generated when current flows from one end to the other end of the fourth electrode, and a magnetic field generated when current flows from one end to the other end of the fifth electrode are in phase and in the same direction.