The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2021
Filed:
Dec. 22, 2017
Applicant:
Abb Power Grids Switzerland Ag, Baden, CH;
Inventors:
Klaus Bohnert, Oberrohrdorf, CH;
Andreas Frank, Zürich, CH;
Georg Muller, Glattpark/Opfikon, CH;
Lin Yang, Steinhausen, CH;
Assignee:
ABB POWER GRIDS SWITZERLAND AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 15/24 (2006.01); G01R 33/032 (2006.01);
U.S. Cl.
CPC ...
G01R 15/246 (2013.01); G01R 15/247 (2013.01); G01R 33/0322 (2013.01);
Abstract
In order to carry out the polarimetric detection of a measurand, light of two polarization states is passed through a sensing element, where the two states suffer a differential phase shift depending on the value of the measurand. In order to compensate for only imperfections of the device, a method is proposed that is based on calibration values obtained in a low-value regime of the measurand only. Yet the method can still be used for accurately determining higher values of the measurand.