MAGNETIC SENSOR DEVICE
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United States of America Patent
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Issued Date -
Jul 16, 2015
app pub date -
Jun 13, 2013
filing date -
Jul 26, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is a magnetic sensor device that is capable of relaxing a sensitivity change due to the position of a sample to be inspected, even with a configuration wherein the sample to be inspected is disposed on the side of an exciting coil and a detecting coil. Specifically, in a magnetic sensor device, an exciting coil and a detecting coil are disposed with respect to a sample disposing space, and the detecting coil detects an alternating current magnetic field generated by the exciting coil. As the exciting coil, this magnetic sensor device is provided with a first exciting coil, which is disposed on one side of the sample disposing space, and a second exciting coil, which is disposed on the other side of the sample disposing space. As the detecting coil, this magnetic sensor device is provided with a first detecting coil, which detects, on the other side of the sample disposing space, an alternating current magnetic field of the first exciting coil, and a second detecting coil, which detects, on the one side of the sample disposing space, an alternating current magnetic field of the second exciting coil.
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