Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1995-10-25
1997-06-03
Nguyen, Vinh P.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324117R, 3242441, G01R 3100, G01R 2900
Patent
active
056358300
ABSTRACT:
A magneto-optical element is of a rare-earth iron garnet crystal expressed at least by formula 1, and a element in whose composition range the value of X is set at 0.8.ltoreq.X.ltoreq.1.3; that of Y at 0.2.ltoreq.Y.ltoreq.0.4; that of Z at 0.1.ltoreq.Z.ltoreq.0.9; and that of W at 0.ltoreq.W.ltoreq.0.3; and R element is made at least one or more kinds of rare-earth elements. An optical magnetic field sensor is composed in such a manner that light diffracted by magnetic domain structure of rare-earth iron garnet crystal can be detected up to a higher-order light by optical fiber on light output side through optical system arrangement. A magnetic field measuring equipment composed of the optical magnetic field sensor has a linearity error of .+-.1.0% or less within a magnetic field range 5.0 Oe to 200 Oe, and allows a measuring accuracy higher than with prior art equipment.
REFERENCES:
patent: H371 (1987-11-01), Bobb
patent: 4604577 (1986-08-01), Matsumura et al.
patent: 4683421 (1987-07-01), Miller et al.
patent: 4823083 (1989-04-01), Meunier et al.
patent: 5075546 (1991-12-01), Kamada et al.
patent: 5140156 (1992-08-01), Imaeda et al.
patent: 5157324 (1992-10-01), Chollet
patent: 5202629 (1993-04-01), Seike et al.
patent: 5212446 (1993-05-01), Itoh et al.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Vinh P.
LandOfFree
Optical magnetic field sensor employing differently sized transm does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical magnetic field sensor employing differently sized transm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical magnetic field sensor employing differently sized transm will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-393892