JPH0384923U - - Google Patents

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Publication number
JPH0384923U
JPH0384923U JP14749189U JP14749189U JPH0384923U JP H0384923 U JPH0384923 U JP H0384923U JP 14749189 U JP14749189 U JP 14749189U JP 14749189 U JP14749189 U JP 14749189U JP H0384923 U JPH0384923 U JP H0384923U
Authority
JP
Japan
Prior art keywords
magneto
optical recording
magnetic field
objective lens
pickup
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
JP14749189U
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 JP14749189U priority Critical patent/JPH0384923U/ja
Publication of JPH0384923U publication Critical patent/JPH0384923U/ja
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す光磁気記録用
対物レンズの断面図、第２図は同対物レンズを磁
界変調方式の光磁気記録用ピツクアツプに適用し
た場合の説明図、第３図は従来の光磁気記録用対
物レンズを持つ磁界変調方式の光磁気記録用ピツ
クアツプの概略の構成図である。 ３……光磁気デイスク（光磁気記録媒体）、６
……対物レンズ駆動装置、１０……光磁気記録用
対物レンズ、１１……レンズホルダ、１２……磁
界印加用コイル、１３……サーボ信号光学系。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 光磁気記録用ピツクアツプの結像光学系を
    構成する対物レンズであつて、 光磁気記録媒体に磁界を印加するための磁界印
    加用コイルを同心状に一体に設けたことを特徴と
    する光磁気記録用対物レンズ。 (2) 前記磁界印加用コイルが磁界変調方式の光
    磁気記録用ピツクアツプにおける磁界印加用コイ
    ルであることを特徴とする請求項１記載の光磁気
    記録用対物レンズ。
JP14749189U 1989-12-21 1989-12-21 Pending JPH0384923U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14749189U JPH0384923U (ja) 1989-12-21 1989-12-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14749189U JPH0384923U (ja) 1989-12-21 1989-12-21

Publications (1)

Publication Number Publication Date
JPH0384923U true JPH0384923U (ja) 1991-08-28

Family

ID=31694000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14749189U Pending JPH0384923U (ja) 1989-12-21 1989-12-21

Country Status (1)

Country Link
JP (1) JPH0384923U (ja)

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