JPH0249053U - - Google Patents

Info

Publication number
JPH0249053U
JPH0249053U JP12795888U JP12795888U JPH0249053U JP H0249053 U JPH0249053 U JP H0249053U JP 12795888 U JP12795888 U JP 12795888U JP 12795888 U JP12795888 U JP 12795888U JP H0249053 U JPH0249053 U JP H0249053U
Authority
JP
Japan
Prior art keywords
magnet
yoke
magnets
focus
permanent
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
JP12795888U
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 JP12795888U priority Critical patent/JPH0249053U/ja
Publication of JPH0249053U publication Critical patent/JPH0249053U/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、２ａ：溝。

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、永久磁石をアルニコ系磁石合金若
    しくは酸化物磁石材料によつて形成すると共に、
    ヨークに円周方向を分断するような溝を設けたこ
    とを特徴とするフオーカスマグネツト。
JP12795888U 1988-09-29 1988-09-29 Pending JPH0249053U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12795888U JPH0249053U (ja) 1988-09-29 1988-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12795888U JPH0249053U (ja) 1988-09-29 1988-09-29

Publications (1)

Publication Number Publication Date
JPH0249053U true JPH0249053U (ja) 1990-04-05

Family

ID=31380857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12795888U Pending JPH0249053U (ja) 1988-09-29 1988-09-29

Country Status (1)

Country Link
JP (1) JPH0249053U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57199154A (en) * 1981-06-03 1982-12-07 Sony Corp Electromagnetic focusing device for cathode-ray tube
JPS62290048A (ja) * 1986-05-01 1987-12-16 Hitachi Metals Ltd フオ−カスマグネツト

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57199154A (en) * 1981-06-03 1982-12-07 Sony Corp Electromagnetic focusing device for cathode-ray tube
JPS62290048A (ja) * 1986-05-01 1987-12-16 Hitachi Metals Ltd フオ−カスマグネツト

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