Optical sensor for non-contact voltage measurement

Abstract

A voltage sensor for obtaining a light signal representative of an AC voltage in a live electrical wire having a surrounding electrical field, comprising: a conducting device adapted to be placed in the surrounding electrical field and in galvanic isolation to the live electrical wire for causing a movement of charges and extracting a current from the movement of charges; a micro-light source for emitting a light signal, the micro-light source being operatively connected to the conducting device for receiving the extracted current and being directly powered by the extracted current, an intensity of the light signal being related to a value of the AC voltage in the electrical wire; a light guide, operatively coupled to the micro-light source, for receiving and propagating the light signal over a distance.

Dependencies are inferred from the claim text.