JPS58193334U - light pick up - Google Patents

light pick up

Info

Publication number
JPS58193334U
JPS58193334U JP9088682U JP9088682U JPS58193334U JP S58193334 U JPS58193334 U JP S58193334U JP 9088682 U JP9088682 U JP 9088682U JP 9088682 U JP9088682 U JP 9088682U JP S58193334 U JPS58193334 U JP S58193334U
Authority
JP
Japan
Prior art keywords
optical axis
lens
light pick
shifted
optical
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
JP9088682U
Other languages
Japanese (ja)
Other versions
JPS6334104Y2 (en
Inventor
勉 松井
Original Assignee
赤井電機株式会社
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 by 赤井電機株式会社 filed Critical 赤井電機株式会社
Priority to JP9088682U priority Critical patent/JPS58193334U/en
Publication of JPS58193334U publication Critical patent/JPS58193334U/en
Application granted granted Critical
Publication of JPS6334104Y2 publication Critical patent/JPS6334104Y2/ja
Granted legal-status Critical Current

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  • Optical Recording Or Reproduction (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は光ピツクアップの光学系の斜視図および４分割
光センサの信号処理系を示す図、第２図はシリントリレ
ンズの位置設定を説明する図、第３図は４分割光センサ
の出力設定を説明する図、第４図、第５図および第８図
はこの考案の実施例を示す図、第６図は第４図の光学系
を光軸について示す図で、ａは半導体レーザの光軸とコ
リメータレンズの光軸が一致する場合、ｂは一致しない
場合、第７図は４分割光センサの受光パターンおよびト
ラッキングエラー信号、フォーカスエラー信号の検出を
示す図である。 １・・・半導体レーザ、２・７・偏光ビームスプリッタ
、３・・・コリメータレンズ、４・・・１７４波長板、
５・・・対物レンズ、６・・・ディスク、７・・・シリ
ンドリカルレンズ、８・・・４分割光センサ、１３・・
・９０°偏向ミラー。Figure 1 is a perspective view of the optical system of the optical pickup and a diagram showing the signal processing system of the 4-split optical sensor, Figure 2 is a diagram explaining the position setting of the cylindrical lens, and Figure 3 is the output of the 4-split optical sensor. Figures 4, 5, and 8 are diagrams explaining the settings, and Figures 4, 5, and 8 are diagrams showing embodiments of this invention. Figure 6 is a diagram showing the optical system of Figure 4 with respect to the optical axis. When the optical axis and the optical axis of the collimator lens match, and when b does not match, FIG. 7 is a diagram showing the detection of the light reception pattern of the 4-split optical sensor, the tracking error signal, and the focus error signal. 1... Semiconductor laser, 2.7. Polarizing beam splitter, 3... Collimator lens, 4... 174 wavelength plate,
5... Objective lens, 6... Disc, 7... Cylindrical lens, 8... 4-split optical sensor, 13...
・90° deflection mirror.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 対物レンズの光軸をコリメータレンズの光軸からずらす
とともにシリンドリカルレンズの中心軸をコリメータレ
ンズの光軸に対して平行または直交させ、シリンドリカ
ルレンズのパワー光軸を合焦時の反射光光軸からずらし
て配置したことを特徴とする光ピツクアップ。The optical axis of the objective lens is shifted from the optical axis of the collimator lens, and the center axis of the cylindrical lens is made parallel or perpendicular to the optical axis of the collimator lens, and the power optical axis of the cylindrical lens is shifted from the optical axis of the reflected light during focusing. An optical pickup characterized by being arranged with
JP9088682U 1982-06-19 1982-06-19 light pick up Granted JPS58193334U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9088682U JPS58193334U (en) 1982-06-19 1982-06-19 light pick up

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9088682U JPS58193334U (en) 1982-06-19 1982-06-19 light pick up

Publications (2)

Publication Number Publication Date
JPS58193334U true JPS58193334U (en) 1983-12-22
JPS6334104Y2 JPS6334104Y2 (en) 1988-09-09

Family

ID=30099333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9088682U Granted JPS58193334U (en) 1982-06-19 1982-06-19 light pick up

Country Status (1)

Country Link
JP (1) JPS58193334U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169706A (en) * 1984-02-14 1985-09-03 Olympus Optical Co Ltd Surface-state measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169706A (en) * 1984-02-14 1985-09-03 Olympus Optical Co Ltd Surface-state measuring device

Also Published As

Publication number Publication date
JPS6334104Y2 (en) 1988-09-09

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