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:
Jul. 16, 1985
Filed:
Sep. 13, 1982
Applicant:
Inventors:
Torgny Brogardh, Vaster.ang.s, SE;
Christer Ovren, Vaster.ang.s, SE;
Assignee:
ASEA Aktiebolag, Vaster.ang.s, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
250227 ; 2502 / ; 324 96 ;
Abstract
A fiber-optical measuring apparatus for measuring magnetic fields, current, position, and various mechanical quantities consists of a transducer connected to a measuring electronic unit via at least one optical fiber, and the transducer comprises a magneto-optical modulator with a domain-producing magnetic material. The transducer is provided with at least two optical filters, of which at least one filter is positioned in the ray path on one side of the magneto-optical modulator and at least one other filter is positioned in the ray path on the opposite side of the modulator.