| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical radio transmission device which uses a light source separately provided for optical axis adjustment to transmit a sufficiently wide light beam with strong power thereby adjusting an optical axis. <P>SOLUTION: The optical radio transmission device includes a first light beam transmitter/receiver 10 for main signal transmission/reception, a second light beam transmitter/receiver 20 for optical axis adjustment, and a frame 50 integrally supporting these transmitters/receivers. An optical axis adjustment mechanism 51 is provided which rolls the frame 50 to simultaneously adjust optical axes of the first light beam transmitter/receiver 10 and the second light beam transmitter/receiver 20. A transmission section optical system of the second light beam transmitter/receiver 20 has a light beam radiation angle wider than that of a transmission section optical system of the first light beam transmitter/receiver 10, a reception section optical system of the second light beam transmitter/receiver 20 has an angle of view of light beam wider than that of a reception section optical system of the first light beam transmitter/receiver 10, and the reception section optical system of the second light beam transmitter/receiver 20 uses a light beam with a wavelength band wider than that of the reception section optical system of the first light beam transmitter/receiver 10, and with a wavelength different from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT |
