JPS6235417U - - Google Patents

Info

Publication number
JPS6235417U
JPS6235417U JP12590485U JP12590485U JPS6235417U JP S6235417 U JPS6235417 U JP S6235417U JP 12590485 U JP12590485 U JP 12590485U JP 12590485 U JP12590485 U JP 12590485U JP S6235417 U JPS6235417 U JP S6235417U
Authority
JP
Japan
Prior art keywords
lenses
optical
objective lens
light
optical disk
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.)
Granted
Application number
JP12590485U
Other languages
English (en)
Other versions
JPH0528570Y2 (ja
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 JP1985125904U priority Critical patent/JPH0528570Y2/ja
Publication of JPS6235417U publication Critical patent/JPS6235417U/ja
Application granted granted Critical
Publication of JPH0528570Y2 publication Critical patent/JPH0528570Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Lens Barrels (AREA)

Description

【図面の簡単な説明】
第1図は本考案による光ピツクアツプの補正装
置の実施例を示す部材配置図、第2図は従来の光
ピツクアツプの光学部材の配置図、第3図は従来
のピツクアツプの補正装置を示す正面図、第4図
はその側面図である。 21……発光素子、22……回折格子、23…
…ハーフミラー、24……対物レンズ、24a,
24b……対物レンズを構成しているレンズ、2
5……受光レンズ、26……受光素子、27……
スペーサ、D……光デイスク。

Claims (1)

    【実用新案登録請求の範囲】
  1. 検知ビームを発生する発光素子と、この検知ビ
    ームを光デイスクの光面に集光させる対物レンズ
    と、光デイスクとの記録面からの反射ビームを検
    知する受光素子とが設けられている光ピツクアツ
    プにおいて、前記対物レンズは複数枚のレンズか
    ら構成されており、且つこのレンズの間には圧電
    材料によるスペーサが介在されており、このスペ
    ーサの肉厚の変化によつてレンズ間の距離が変更
    自在とされていることを特徴とする光ピツクアツ
    プの補正装置。
JP1985125904U 1985-08-16 1985-08-16 Expired - Lifetime JPH0528570Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985125904U JPH0528570Y2 (ja) 1985-08-16 1985-08-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985125904U JPH0528570Y2 (ja) 1985-08-16 1985-08-16

Publications (2)

Publication Number Publication Date
JPS6235417U true JPS6235417U (ja) 1987-03-02
JPH0528570Y2 JPH0528570Y2 (ja) 1993-07-22

Family

ID=31019207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985125904U Expired - Lifetime JPH0528570Y2 (ja) 1985-08-16 1985-08-16

Country Status (1)

Country Link
JP (1) JPH0528570Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147507A (en) * 1977-05-27 1978-12-22 Nippon Telegr & Teleph Corp <Ntt> Focus position controller
JPS547305A (en) * 1977-06-20 1979-01-20 Sony Corp Optical recorder-reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147507A (en) * 1977-05-27 1978-12-22 Nippon Telegr & Teleph Corp <Ntt> Focus position controller
JPS547305A (en) * 1977-06-20 1979-01-20 Sony Corp Optical recorder-reproducer

Also Published As

Publication number Publication date
JPH0528570Y2 (ja) 1993-07-22

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