Abstract: An optical transfer device for transferring optical signals from a moveable part to a stationary part through an optical transfer medium in order to minimize distortions of the optical signal and increase the effective bandwidth of the signal transit path by minimizing and/or maintaining equal alternate optical signal transit paths from the transmitter to the receiver.

Abstract: An optical rotating data transmission device for polarization-maintaining transmission of linearly polarized light comprises at least one first collimator for coupling on first light-waveguides, and also a second collimator for coupling on second light-waveguides, the second collimator being supported to be rotatable relative to the first collimator about a rotation axis.

Abstract: The invention is characterized by the provisions that each transmitter comprises an AC voltage or current source, respectively, as well as a plurality of inductive coupling elements supplied from said source, which elements are supplemented by at least one capacitor to form elements capable of resonating, and that furthermore one control elements is that controls said AC voltage or current source, respectively, in such a way that the latter operates on a resonant frequency of said elements capable of resonating.

Abstract: A device for signal transmission in computer tomographs comprising a rotating part supported to be rotatable with respect to a stationary part. A transmission controller is provided on the rotating part for compiling, from video data of a video source and from control information of a control unit, serial data for transmission to the stationary part by means of a rotary joint. A receiving controller is provided in the stationary part for receiving the serial data transmitted by the rotary joint and for evaluating these data and communicating the control information contained therein to a control unit, and the video data to a data sink. The serial data generated by the transmission controller comprise data frames, and video data and control information each being transmitted in a data frame.

Abstract: Described is a computer tomograph system comprising a rotating part (1) for accommodating at least one X-ray tube (4) and a detector arrangement (5), and also a stationary part (2) comprising a bearing assembly (3) for rotatably supporting the rotating part, and a d.c.-a.c. converter (6) for generating an alternating current for feeding a conductor arrangement (7). Furthermore, the rotating part comprises at least one inductive coupler (8) for engaging, exclusively in dependence upon position, with a section of the entire length of the conductor arrangement (7), and for coupling electrical energy out of the conductor arrangement.

Abstract: A device for transmitting modulated optical signals between a first unit and a second unit, in which the first unit is supported to be rotatable or movable linearly relative to the second unit, comprises a light guide extending along a given track on the first unit, a first light coupler for coupling light into and out of the light guide, and a second light coupler disposed on the second unit and movable relative to the light guide for coupling light into and out of the light guide. A coupling slide is provided for supporting the second light coupler, and is mechanically loosely connected to the second unit via a take-up unit so that the coupling slide is moved along the given track together with the second unit by a movement of the second unit.

Abstract: The invention relates to a device for transmitting optical signals between at least two components disposed for rotation. The invention excels itself by the provision that at least one micro-optical component is used for beam forming or beam guidance.

Abstract: A device for the transmission of digital signals between two units mobile relative to each other, in particular via non-contacting rotary joints, comprises a coding means on a transmitter side along a signal transmission path for matching a coding of the digital signals to transmission characteristics of the signal transmission path, so that an optimum transmission is achieved. An optional decoder means on a receiver side regenerates original signals so that the coding remains hidden, but a substantially more reliable transmission is achieved.

Abstract: A rotating data transmission device for computer tomographs, for transmission from a rotating part to a stationary part that is rotatably supported relative to the rotating part, comprises at least a rotating high-speed data transmitter unit, a rotating high-speed transmission line, a stationary high-speed data receiver unit. The rotating high-speed data transmitter unit contains a rotating pattern controller and the stationary high-speed data receiver unit contains a stationary data analyzer for analyzing patterns generated by the rotating pattern controller. Furthermore unit controllers are provided to control the units.

Abstract: An arrangement for broadband signal and/or energy transmission, between at least two units is disclosed. Said units may be displaced relative to each other along a track. Said arrangement comprises a first unit, which has a symmetrical open circuit arrangement with at least one reflection-free closed end, within which an electromagnetic wave can propagate and at least one second unit with a coupling unit for the coupling and/or decoupling of electrical signals. The invention is characterized in that at least one of the at least one second units has a directional coupler for the coupling and/or decoupling of signals.

Abstract: A device for signal transmission between units that are movable along given tracks comprises at least one transmitter for generating electrical signals, at least one conductor arrangement for conducting the electrical signals along a track of movement, and at least one receiver for coupling out electrical signals from a conductor arrangement. At least one conductor arrangement comprises at least one conductor structure for conducting electrical signals, an electric reference surface assigned thereto, and at least one dielectric between the conductor structure and the reference surface. A dielectric of the kind used has a high homogeneity, or a high symmetry with respect to the electrical center of the longitudinal axis of the conductor structure, or both.

Abstract: A device for signal transmission between units that are movable along predetermined tracks comprises at least one light guide for guiding light, and a prism disposed to be movable along the light guide at a short distance from the light guide for coupling light into or out of the light guide.

Abstract: A rotating data transmission device for computer tomographs, for transmission from a rotating part to a stationary part that is rotatably supported relative to the rotating part, comprises at least one dielectric waveguide assigned to the rotating part, at least one first line coupler for coupling electrical signals into the at least one dielectric waveguide, and at least one coupler assigned to the stationary part for tapping electrical signals from the at least one dielectric waveguide. The dielectric waveguide is divided into at least two segments of approximately the same length, signals are coupled into the segments of the dielectric waveguides through a first line coupler to propagate in opposite directions, and ends of the segments distant from the line coupler are provided with terminations.

Abstract: An optical rotary joint comprises means for coupling-in or coupling-out light, and an optical derotating system. The derotating system may be a Dove prism or an Abbe-Koenig prism. In order to improve reflection at a reflecting face or faces of the derotating element, the reflecting faces are coated with an optically transparent material having a refractive index that is lower than the refractive index of the derotating element. In an embodiment the derotating optical element comprises a Dove prism. Light entry and light exit faces of the Dove prism are provided with optical supplementary elements that have an optical index of refraction greater than an optical index of refraction of the Dove prism.

Abstract: A slide track mounting or a contact brush mounting for a sliding contact assembly comprises insulators having a surface structure that is a combined microstructure and nanostructure. Thereby an accumulation of dirt and abraded particles from contact brushes on the insulators is substantially reduced. This allows creep paths to be shortened and periods between maintenance operations for cleaning to be prolonged.

Abstract: A device for transmitting modulated optical signals between units comprises a first unit and a second unit, the first unit being supported to be rotatable with respect to the second unit, a light guide along a circular track on the first unit, a first and a second light coupler for coupling light signals into or out of the light guide, the second light coupler being disposed on the second unit and movable with respect to the light guide. For an achievement of a high transmission bandwidth, a controllable absorber is provided in the light guide to prevent a propagation of light along a plurality of paths between the two units. In a method for operating the device, the absorber is controlled so that modulated light signals from the first and the second directions have a same amplitude at a point at which the modulated light signals have the same phase.

Abstract: An array transmits a wide-band electric signal between at least two components disposed for rotation relative to each other. The components are provided with coupling surfaces that are maintained at a largely constant distance from each other via the rotary movement. The space between the coupling surfaces is predominantly filled with a dielectric material.

Abstract: A computer tomograph comprises a rotating part and a stationary part, and includes a system for transmitting data between the rotating part and the stationary part with a directional radio link. The system comprises an antenna arrangement for directional emission of data signals from the rotating part along a direction of a rotation axis of the rotating part, and for directionally sensitive reception of data signals at a patient's table on the stationary part.

Abstract: A device for transmitting data between a rotating part and a stationary part of a computer tomograph, in which the rotating part comprises at least one data source; a conductor structure; and at least one first transmitter for energizing the conductor structure; and the stationary part comprises at least one data sink for evaluating data; at least one receiver; and a receiver coupler for tapping off signals from the conductor structure and supplying the signals to the at least one receiver; is improved to reduce radiation of high-frequency signals.

Abstract: A device for signal transmission between units which are movable relative to each other along predetermined paths comprises at least one transmitter associated with a first unit for generating electrical signals, at least one conductor arrangement associated with the first unit and connected to the transmitter for carrying the electrical signals along a course of the conductor arrangement extending substantially along a path of the movement, and at least one receiver associated with a second unit for decoupling electrical signals from the conductor arrangement. Means for balancing the electrical signals are provided along the course of the conductor arrangement for reducing interference radiation or susceptibility to interference.