JPS58159647U - optical pickup device - Google Patents

optical pickup device

Info

Publication number
JPS58159647U
JPS58159647U JP5775882U JP5775882U JPS58159647U JP S58159647 U JPS58159647 U JP S58159647U JP 5775882 U JP5775882 U JP 5775882U JP 5775882 U JP5775882 U JP 5775882U JP S58159647 U JPS58159647 U JP S58159647U
Authority
JP
Japan
Prior art keywords
pickup device
optical pickup
magnetic flux
coil
effective magnetic
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
JP5775882U
Other languages
Japanese (ja)
Inventor
近藤　安生
浩一 川上
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP5775882U priority Critical patent/JPS58159647U/en
Publication of JPS58159647U publication Critical patent/JPS58159647U/en
Pending legal-status Critical Current

Links

Landscapes

  • 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) [Abstract] 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 the drawing]

第１図、第２図は従来の光学ピックアップ装置を示す図
、第３図、第４図はこの考案の異なる磁気回路を示す図
、第５図、第６図は本考案に係る光学ピックアップ装置
の異なる磁気回路を示す図である。 ３は対物レンズ、４は磁石、６はコイル、７は磁性体薄
板。1 and 2 are diagrams showing a conventional optical pickup device, FIGS. 3 and 4 are diagrams showing different magnetic circuits of this invention, and FIGS. 5 and 6 are diagrams showing an optical pickup device according to the present invention. FIG. 3 is a diagram showing different magnetic circuits. 3 is an objective lens, 4 is a magnet, 6 is a coil, and 7 is a magnetic thin plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁石にて形成された磁界中にコイルを配置し、このコイ
ルに制御電流を流すことにより電磁気的に対物レンズの
トラッキング若しくは焦点制御を行う構成とした光学ピ
ンクアップ装置に於いて、磁性体薄板を非有効磁束の向
きに積層して設け、非有効磁束に対する磁気抵抗を太き
（し、以って有効磁束を増大させたことを特徴とする光
学ピックアップ装置。In an optical pink-up device, a coil is placed in a magnetic field formed by a magnet, and a control current is passed through the coil to electromagnetically perform objective lens tracking or focus control. An optical pickup device characterized in that the optical pickup device is laminated in the direction of the non-effective magnetic flux to increase magnetic resistance to the non-effective magnetic flux (thereby increasing the effective magnetic flux).
JP5775882U 1982-04-20 1982-04-20 optical pickup device Pending JPS58159647U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5775882U JPS58159647U (en) 1982-04-20 1982-04-20 optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5775882U JPS58159647U (en) 1982-04-20 1982-04-20 optical pickup device

Publications (1)

Publication Number Publication Date
JPS58159647U true JPS58159647U (en) 1983-10-24

Family

ID=30068184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5775882U Pending JPS58159647U (en) 1982-04-20 1982-04-20 optical pickup device

Country Status (1)

Country Link
JP (1) JPS58159647U (en)

Similar Documents

Publication Publication Date Title
JPS58163908U (en) Objective lens drive device
JPS58159647U (en) optical pickup device
JPS6044225U (en) Optical pickup device
JPS58170029U (en) optical pickup device
JPS58179635U (en) Pickup objective lens drive device
JPS5939433U (en) Optical pick-up device
JPS58165738U (en) Objective lens drive device
JPS5966926U (en) Optical pickup tracking drive
JPS5966928U (en) Optical pickup tracking drive
JPS58159646U (en) Actuator for optical pickup
JPS58165737U (en) Objective lens drive device
JPS6077026U (en) Objective lens drive device
JPS5966925U (en) Optical pick-up device
JPS5817628U (en) Objective lens drive control device in optical disk player
JPS6012824U (en) Optical pickup actuator
JPS60142828U (en) Objective lens drive device for optical information processing equipment
JPS59125728U (en) magneto-optical recording device
JPS60169720U (en) objective lens device
JPS58140521U (en) Actuator for optical pickup
JPS60142824U (en) light pick up
JPS5914132U (en) Optical pickup drive device
JPS616962U (en) floppy disk device
JPS59180227U (en) Actuator for optical disk
JPS6137129U (en) Objective lens drive device
JPS5910129U (en) optical pick up