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:
Jun. 02, 1992
Filed:
Mar. 05, 1991
Applicant:
Inventors:
Radivoje Popovic, Zug, CH;
Beat Halg, Cham, CH;
Thomas Seitz, Zug, CH;
Walter Trachslin, Walchwil, CH;
Assignee:
Landis & Gyr Betriebs AG, Zug, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01B / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
3242441 ; 324260 ; 356345 ; 25022711 ;
Abstract
A device for measuring a magnetic induction comprises an evaluation device including a source for emitting light and a receiver for receiving light. A resonator is located in the light path between the source and the receiver and comprises first and second parallel mirrors and a gaseous medium occupying the space between the two mirrors. A converter is coupled to one of the mirrors for shifting one of said mirrors along an optical axis of the resonator so that the optical length of the resonator varies in response to the induction to be measured.