Optical wireless transmission equipment, optical axis adjustment method of optical wireless transmission equipment, optical wireless communication method, and optical wireless transmission system

摘要

PROBLEM TO BE SOLVED: To provide an optical wireless transmission apparatus for transmitting a signal by optical wireless communication that can be downsized, carry out optical axis alignment with high accuracy at a high speed and can be applicable to an outdoor use.;SOLUTION: In a light receiving and emitting section 9, two light control elements 3A, 3B for reflecting part of incident light and transmitting the rest and a reflection optical system 4 capable of controlling a deflection angle of incident light with respect to an optical axis are combined, a light emitting section 41 for transmitting the light of a data signal or pilot light, a second light receiving section 39 for obtaining a positional information signal by the pilot light from an opposite apparatus, a second light receiving section 39 for obtaining the positional information signal by the pilot light from the opposite apparatus, and a first light receiving section 40 for receiving the light of the data signal from the opposite apparatus are arranged, and the optical axis alignment between the received light from the opposite apparatus and the transmission light from its own optical wireless transmission apparatus is coaxially carried out by controlling the deflection angle of the reflection optical system 4 on the basis of the position information signal obtained from the second light receiving section 39.;COPYRIGHT: (C)2005,JPO&NCIPI