Patent ID: 6885182

Claim:
An electro-optical voltage sensor for measurement of an electrical voltage V, the voltage V being present between two electrodes and generating an electric field, the electrodes being arranged in a manner spaced apart from one another, and an electro-optically active medium being arranged between the electrodes, into which medium light can be radiated, it being possible to influence the state of polarization of said light in the electro-optically active medium by means of the electric field and to detect it after emergence from the electro-optically active medium, it being possible to determine the voltage V from the detected state of polarization, wherein a distance medium is arranged between the two electrodes, the electro-optically active medium being arranged with an effective thickness d 1 and the distance medium with an effective thickness d 2 between the two electrodes and the effective thicknesses d 1 , d 2 being chosen in such a way that temperature influences on the detected state of polarization of the light are essentially compensated for.