JPH0286049U - - Google Patents
Info
- Publication number
- JPH0286049U JPH0286049U JP10948689U JP10948689U JPH0286049U JP H0286049 U JPH0286049 U JP H0286049U JP 10948689 U JP10948689 U JP 10948689U JP 10948689 U JP10948689 U JP 10948689U JP H0286049 U JPH0286049 U JP H0286049U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- focus magnet
- oxide
- permanent magnets
- based soft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000696 magnetic material Substances 0.000 claims 3
- 229910000859 α-Fe Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図および第２図は各々本考案の実施例を示
す要部正面図および要部縦断面図、第３図はフオ
ーカスマグネツトの中心磁界の軸方向位置の値を
示す磁界曲線を示す図、第４図は従来の例を示す
要部縦断面図である。
１：永久磁石、２，２ａ：ヨーク。
FIGS. 1 and 2 are a front view and a vertical cross-sectional view of the main part showing an embodiment of the present invention, respectively, and FIG. 3 is a diagram showing a magnetic field curve showing the value of the axial position of the central magnetic field of the focus magnet. , FIG. 4 is a vertical cross-sectional view of a main part showing a conventional example. 1: Permanent magnet, 2, 2a: Yoke.
Claims (1)
の磁極面に磁性材料により中空円板状に形成した
ヨークを固着してなる２個の中空円筒形の永久磁
石を、異極を対向させて同軸上に連結し、永久磁
石の内側にコイルを配設してなるフオーカスマグ
ネツトにおいて、永久磁石を酸化物磁石材料によ
つて形成すると共に、ヨークを酸化物系軟質磁性
材料によつて形成したことを特徴とするフオーカ
スマグネツト。 (2) 酸化物系軟質磁性材料がＭｎ―Ｚｎ系フエ
ライトである請求項(1)記載のフオーカスマグネ
ツト。[Claims for Utility Model Registration] (1) Two hollow cylinders that are magnetized in the axial direction and provided with magnetic poles on both end faces, and a yoke formed in the shape of a hollow disc made of magnetic material is fixed to the magnetic pole faces. In a focus magnet, permanent magnets of different shapes are coaxially connected with different poles facing each other, and a coil is arranged inside the permanent magnets. A focus magnet characterized in that it is formed of an oxide-based soft magnetic material. (2) The focus magnet according to claim (1), wherein the oxide-based soft magnetic material is Mn--Zn-based ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10948689U JPH0286049U (en) | 1988-09-29 | 1989-09-19 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12795988 | 1988-09-29 | ||
| JP10948689U JPH0286049U (en) | 1988-09-29 | 1989-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286049U true JPH0286049U (en) | 1990-07-06 |
Family
ID=31718819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10948689U Pending JPH0286049U (en) | 1988-09-29 | 1989-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286049U (en) |
-
1989
- 1989-09-19 JP JP10948689U patent/JPH0286049U/ja active Pending
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