JPH0249055U - - Google Patents

Info

Publication number
JPH0249055U
JPH0249055U JP12796188U JP12796188U JPH0249055U JP H0249055 U JPH0249055 U JP H0249055U JP 12796188 U JP12796188 U JP 12796188U JP 12796188 U JP12796188 U JP 12796188U JP H0249055 U JPH0249055 U JP H0249055U
Authority
JP
Japan
Prior art keywords
magnet
magnets
focus
permanent magnet
temperature
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
Application number
JP12796188U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12796188U priority Critical patent/JPH0249055U/ja
Publication of JPH0249055U publication Critical patent/JPH0249055U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
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図は従来
の例を示す要部縦断面図である。 1:永久磁石、2:ヨーク。

Claims (1)

    【実用新案登録請求の範囲】
  1. 軸方向に着磁して両端面に磁極を設け、この磁
    極面に強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、永久磁石を温度係数が絶対値で0
    .02%/°C近傍にあるRCo17系希土類
    磁石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。
JP12796188U 1988-09-29 1988-09-29 Pending JPH0249055U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12796188U JPH0249055U (ja) 1988-09-29 1988-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12796188U JPH0249055U (ja) 1988-09-29 1988-09-29

Publications (1)

Publication Number Publication Date
JPH0249055U true JPH0249055U (ja) 1990-04-05

Family

ID=31380861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12796188U Pending JPH0249055U (ja) 1988-09-29 1988-09-29

Country Status (1)

Country Link
JP (1) JPH0249055U (ja)

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