OPTICAL SPACE TRANSMITTER

摘要

PURPOSE:To correct the radiation position of an optical beam in tracking with fluctuation in a relative position between a sender side and a receiver side. CONSTITUTION:A light detected and outputted from a light emitting diode 33 of a reception unit 3 is received by a position deviation detector 16 of a transmission unit 1 and a deviation between a radiation position of a laser beam outputted from a laser diode 13 of the transmission unit 1 and a position of a light receiving element 31 of the reception unit 3 is detected based on the light receiving position. An actuator driver 15 turns an actuator 14 supporting the laser diode 13 in vertical and horizontal directions based on the deviation in vertical and horizontal directions. Thus, the radiation position of an optical beam is corrected in response to it when not only the sender side but also the receiver side is moved.