| 摘要 |
PURPOSE:To execute an optical coupling of plural rotating optical fibers by providing a reflecting device of a light between a pair of optical fibers opposed to each other, which are inclined against an axial core with a selective interval in the axial core direction of a rotating member and provided in parallel to a fixed member side. CONSTITUTION:A reflecting device, for instance, a reflector 17 which is close to an optical fiber 11, inclined by 45 degrees against an axial core of a rotating member 8, and has a small-sized reflecting surface is installed to a fixed member 9 on a production of the axial core of the rotating member 8 in the crossing part of the fixed member 9 and the rotating member 8. Also, a larger reflector 18 than the reflector 17, and a larger reflector 19 than the reflector 18 are inclined by 45 degrees against the axial core of the rotating member 8 and installed at a position separated from the optical fiber farther than the reflector 17 on a production of the axial core of the rotating member 8, and a farther separated position, respectively. Lenses 14a-16a for converting a luminous flux projected from them to parallel beams are installed to the tip of optical fibers 14-16. According to such a constitution, it is possible to execute an optical coupling to plural optical fibers in which one and the other are installed to the rotating member and the fixed member, respectively, or an optical cable of a multicore. |
