| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensor such as a magnetic sensor, a current sensor, a stress sensor, and a strain sensor, which can set a change during measurement of characteristics of a sensor such as high or low levels of sensitivity and wide or narrow levels of dynamic range; and a setting method therefor. <P>SOLUTION: A magnetic sensor 1 includes a magnetic body 2 to which an external magnetic field is applied and detection means 3 for detecting an external magnetic field based on a magnetic optical Kerr effect of the magnetic body 2 and includes permanent magnets 6, 6 for applying a DC magnetic field to the magnetic body 2 and coils 7, 7 for remagnetizing the permanent magnets 6, 6. <P>COPYRIGHT: (C)2013,JPO&INPIT |
