| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bidirectional optical communication device capable of being used in a rotary movable part such as a joint of a robot. <P>SOLUTION: In a light emitting and light receiving part 110 of a first communication module 100 provided in a first rotating body, light emitting elements 111 and light receiving elements 112 are alternately arranged on the circle of a radius r centering on a rotating shaft. In a light emitting and light receiving part 210 of a second communication module 200 provided with a second rotating body having the same rotating shaft as the first rotating body, light emitting elements 211 and light receiving elements 212 are alternately arranged on the circle of a radium r centering on a rotating shaft. Further, the light emitting elements 111 and the light receiving elements 222 are provided with linear polarizers 121 and 222, and the light emitting elements 211 and the light receiving elements 112 are provided with linear polarizers 122 ad 221. In addition, a polarization direction of the linear polarizers 121 and 222 is set in a radial direction centering on the rotating shaft, and a polarization direction of the linear polarizers 122 and 221 is set in a direction perpendicular to the radial direction centering on the rotating shaft. <P>COPYRIGHT: (C)2010,JPO&INPIT |
