SPACE LIGHT TRANSMITTER AND SPACE LIGHT TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide the space light beam transmitter and the space light beam transmission method that tracks a light beam with simple control. SOLUTION: A transmitter 10 emits a plurality of spread tracking lights X1 or the like and a deviation of a tracking light reception section 22 from a reference point is detected from the luminous intensity distribution of the tracking lights X1 . Its error information is sent from the receiver 20 to the transmitter 10, lenses 11, 13 are used to change an azimuth of the optical axis of the tracking lights X1 and to adjust the azimuth of the optical axis of a data light beam 40.