Abstract: The invention concerns electroradiographic image recording and reproducing apparatus in which a radiation image is stored as an electrical charge pattern in a photoconductive layer (6). This image is then converted, by scanning with a beam of light (22), into a sequence of electrical signals which are picked up by strip electrodes (7) arranged on the photoconductive layer surface. The signal-noise ratio may be improved and a large number of amplifiers may be eliminated, according to the invention, by providing a discharge electrode (8) on the photoconductive layer (6) at a distance from the ends of strip electrodes (7). During read-out, the respective strip electrode (7) along which the scanning takes place is electrically connected with the discharge electrode (8) by illuminating (23) the intermediate space (25) between the latter and the strip electrode (7). Such an apparatus is useful, in particular, for the visual reproduction of X-ray images in medical X-ray diagnostics.

Abstract: A device for electro-optically measuring a voltage in a high-voltage conductor, which voltage will produce an electrical field that will elliptically polarize both a linearly polarized light beam or a circularly polarized light beam, the device having a transmitter providing a source of light as a light beam, polarizer for the light beam, a head section at the high-voltage conductor and a receiver on a base which is spaced from the head section, said receiver having a device for measuring the voltage due to a phase difference between the components of the light beams passing with different transit speeds, characterized by the transmitter being on the base, a supply line extending from the source to the head and at least one return line for conducting the light beam having a desired polarization, which is either linear or circular, between the head section and the base, at least one of the lines being formed by a crystal fiber with a longitudinal, linear electro-optical effect and consisting of a piezoelectric

Abstract: A magneto-optical measuring transducer for measuring high voltage currents with a measurement sensing device which carries high voltage potential and is designed as a light conducting coil, with which linearly polarized light is rotated with respect to its polarization direction, in dependence upon the strength of a magnetic field produced by the current to be measured, the light conducting coil being in the form of elements, which lie in respective planes of curvature disposed at right angles to one another, with such elements following one another in the propagation direction of the linearly polarized light.

Abstract: A magneto-optical measuring transducer for measuring high-voltage currents has a measuring sensing element positioned adjacent a conductor carrying the high-voltage currents to be measured. The sensing element is designed as a pair of similar and adjacent light conducting coils. The polarization plane of linearly polarized light within the coils is rotated according to the strength of a magnetic field produced by the current in the adjacent conductor. A compensator is also provided comprising a pair of light conducting coils. The compensator is spaced from and optically connected to the measuring sensing element. A variable magnetic field is provided adjacent the compensator and the change in polarization of light waves conducted within the compensator is detected by a detector and compared to the polarization of light fed through the measuring sensing element.

Abstract: A magneto-optical measuring transducer for use as a Faraday rotator in a device to measure high currents/voltages in response to a magnetic field created by the current to be measured by rotating the direction of polarization of a beam of polarized light characterized by the transducer having a first magnetically saturable part and a second part which has a paramagnetic behavior. The first part preferably consists of yttrium-iron-garnet layer and the second part of a gadolinium-gallium-garnet plate.