Method for the temperature-compensated, electro-optical measurement of an electrical voltage and device for carrying out the method
US6930475B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For measuring an electric voltage in an electro-optic voltage converter, polarized light of two wavelengths is sent through a medium. At the output side, the light is led through a polarizer and the remaining signal is measured. For compensating a temperature dependence of the electro-optic coefficients, the measured results at both wavelengths are compared, and the voltage value consistant with both measurements is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.