发明名称 |
Magnetic circuit with opposing permanent magnets and method for adjusting magnetic field thereof |
摘要 |
It is an object of the present invention to facilitate adjustment of magnetic fields. There is provided a magnetic circuit with opposing permanent magnets, comprising: a pair of permanent magnets opposing each other across a gap, the pair of permanent magnets being magnetized in thickness direction; a yoke magnetically coupled to the permanent magnets, and provided outside of the permanent magnets and the gap; a pair of pole pieces each arranged on a gap side of an opposing surface of each of the permanent magnets and having a peripheral projection in opposing direction; and an adjustment permanent magnet piece having magnetic flux amount of at most 2x10<SUP>-7 </SUP>Wb provided so as to magnetically communicate with a magnetic field formed in the gap.
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申请公布号 |
US6933820(B2) |
申请公布日期 |
2005.08.23 |
申请号 |
US20040007982 |
申请日期 |
2004.12.09 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
DOI YUHITO;MIYATA KOJI;HIGUCHI DAI |
分类号 |
G01R33/3873;A61B5/055;G01R33/383;H01F7/02;(IPC1-7):H01F7/00 |
主分类号 |
G01R33/3873 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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