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:
Nov. 11, 2008
Filed:
Nov. 08, 2006
Klaus Bohnert, Oberrohrdorf, CH;
Philippe Gabus, Nussbaumen, CH;
Juergen Nehring, Wettingen, CH;
Hubert Braendle, Oberengstringen, CH;
Klaus Bohnert, Oberrohrdorf, CH;
Philippe Gabus, Nussbaumen, CH;
Juergen Nehring, Wettingen, CH;
Hubert Braendle, Oberengstringen, CH;
ABB Research Ltd, Zurich, CH;
Abstract
A fiber-optic sensor head is disclosed for an optical current or magnetic-field sensor which can have an optical fiber which includes a magnetooptically active sensor fiber which is optically connected to at least one polarization-defining element. The sensor fiber can be arranged in a magnetic field to be measured or around a conductor carrying current to be measured and can be in the form of a coil, with the coil defining a coil plane (A) with a surface normal (N), and with the at least one polarization-defining element having a marked axis (f). The sensor head can be flexible in the area of the sensor fiber, and an adjustment means can be provided for adjustment of a predeterminable angle β between the marked axis,(f) and the surface normal (N) or for adjustment of predeterminable angles β, β' between the marked axes (f) and the surface normal (N).