Abstract: An optical fiber plug-in connection includes a coupler with a coupler centering sleeve, a coupler sleeve centrally retained within the coupler centering sleeve and a fiber containing coupler pin accommodated in the coupler sleeve. The coupler cooperates with a plug which includes a plug centering sleeve insertable in the coupler centering sleeve, a cable clamp supported in the plug centering sleeve, and a fiber containing plug pin which is radially elastically supported relative to the plug centering sleeve.

Abstract: For the transmission of a plurality of light channels between two parts which rotate relative to each other, an optical transmission element is arranged with its optical axis OA coaxial to the axis of rotation and light transmitters in different radial regions. By convex lenses or mirrors the bundles of rays coming from the light transmitters are parallelized and impinge on the optical transmission element which individually focuses the bundles of rays. In order to obtain an imaging scale of 1:1 a synchronously rotating rhomboid prism or a parabolic mirror can be used. In addition, HF channels can be transmitted.