JPS61105919U - - Google Patents

Info

Publication number
JPS61105919U
JPS61105919U JP18941884U JP18941884U JPS61105919U JP S61105919 U JPS61105919 U JP S61105919U JP 18941884 U JP18941884 U JP 18941884U JP 18941884 U JP18941884 U JP 18941884U JP S61105919 U JPS61105919 U JP S61105919U
Authority
JP
Japan
Prior art keywords
lens
beam splitter
pickup device
optical pickup
light source
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
JP18941884U
Other languages
English (en)
Other versions
JPH0433546Y2 (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 JP1984189418U priority Critical patent/JPH0433546Y2/ja
Publication of JPS61105919U publication Critical patent/JPS61105919U/ja
Application granted granted Critical
Publication of JPH0433546Y2 publication Critical patent/JPH0433546Y2/ja
Expired legal-status Critical Current

Links

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  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Description

【図面の簡単な説明】
第1図はこの考案に係る光ピツクアツプ装置の
構成図、第2図はビームスプリツタの斜視図、第
3図は第2図の断面図、第4図,,はフオ
ーカシング原理図、第5図は従来例の光ピツクア
ツプ装置の構成図である。 20……半導体レーザー、21……コリメート
レンズ、22……ビームスプリツタ、22a……
ハーフミラー面、22b……集光レンズ曲率部、
22c……シリンドリカルレンズ曲率部、23…
…対物レンズ、24……受光素子、26……記録
媒体。

Claims (1)

  1. 【実用新案登録請求の範囲】 レーザ光源より発せられる光を対物レンズによ
    り集光して記憶媒体上に微少スポツトを形成し、
    情報を記録もしくは再生する光学式ピツクアツプ
    装置において、 フオーカシング信号を得るために必要な集光レ
    ンズとシリンドリカルレンズを、上記光源と対物
    レンズの間に介設するプラスチツク製ビームスプ
    リツタと一体成形し、該ビームスプリツタの端面
    に上記集光レンズおよびシリンドリカルレンズと
    同じ作用を行う曲率部を設け、集光レンズ部は反
    射ミラーとなつていることを特徴とする光学式ピ
    ツクアツプ装置。
JP1984189418U 1984-12-12 1984-12-12 Expired JPH0433546Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984189418U JPH0433546Y2 (ja) 1984-12-12 1984-12-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984189418U JPH0433546Y2 (ja) 1984-12-12 1984-12-12

Publications (2)

Publication Number Publication Date
JPS61105919U true JPS61105919U (ja) 1986-07-05
JPH0433546Y2 JPH0433546Y2 (ja) 1992-08-11

Family

ID=30746869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984189418U Expired JPH0433546Y2 (ja) 1984-12-12 1984-12-12

Country Status (1)

Country Link
JP (1) JPH0433546Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683849A (en) * 1979-12-11 1981-07-08 Matsushita Electric Ind Co Ltd Optical information reader
JPS56156937A (en) * 1980-04-30 1981-12-03 Matsushita Electric Ind Co Ltd Optical pickup device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5683849A (en) * 1979-12-11 1981-07-08 Matsushita Electric Ind Co Ltd Optical information reader
JPS56156937A (en) * 1980-04-30 1981-12-03 Matsushita Electric Ind Co Ltd Optical pickup device

Also Published As

Publication number Publication date
JPH0433546Y2 (ja) 1992-08-11

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