| 摘要 |
In a magnetic actuator with a permanent magnetic field, which can be influenced by a ferromagnetic element, of two magnets which face one another with poles of the same sign, and which field is arranged in the track area next to a rail in an encapsulated manner, at least one magnet which is mounted so as to be movable between two limit positions in the direction of the axes of the magnet and, when the magnetic field is not influenced by the wheel, is located in each case in the outer limit position, and when the magnetic field is influenced by the wheel, is located in each case in the inner limit position, is coupled mechanically to a switching element of an optical waveguide switching device. The switching element is a switching element which can be inserted into the beam path between two optical waveguide sections which adjoin one another in the optical waveguide switching device, and at the same time, can influence the beam path, the said switching element being for example a mirror which can be pushed between the ends of the fibres of the two spherical lenses which image sections of the optical waveguides on one another.
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