Patent · US Expired

Method and device for measuring a magnetic field

US6297625A · kind A · utility

7Cited by

4References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Thomas Bosselmann · Erlangen, DE
Stefan Hain · Rückersbach, DE
Michael Willsch · Jena, DE

Key dates

Filing date	Feb 14, 2000
Grant date	Oct 2, 2001
Priority date	—
Expiry date	Feb 14, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/246
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

According to the present invention, in a method, two polarized light signals are sent in opposite directions through a sensor exhibiting the Faraday effect. To minimize the influence of light portions that are reflected on light paths, one light signal is transmitted on one wavelength, and the other is transmitted on another wavelength. The present invention is applicable in particularly vibration-compensated magneto-optical current converters for purposes of avoiding the influence of back-reflections on the measuring signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.