JPH0343694B2 - - Google Patents

Info

Publication number
JPH0343694B2
JPH0343694B2 JP5122482A JP5122482A JPH0343694B2 JP H0343694 B2 JPH0343694 B2 JP H0343694B2 JP 5122482 A JP5122482 A JP 5122482A JP 5122482 A JP5122482 A JP 5122482A JP H0343694 B2 JPH0343694 B2 JP H0343694B2
Authority
JP
Japan
Prior art keywords
objective lens
optical axis
tracking
coil
movable
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.)
Expired
Application number
JP5122482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58169345A (ja
Inventor
Motoo Uno
Norya Kaneda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5122482A priority Critical patent/JPS58169345A/ja
Publication of JPS58169345A publication Critical patent/JPS58169345A/ja
Publication of JPH0343694B2 publication Critical patent/JPH0343694B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP5122482A 1982-03-31 1982-03-31 対物レンズ駆動装置 Granted JPS58169345A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5122482A JPS58169345A (ja) 1982-03-31 1982-03-31 対物レンズ駆動装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5122482A JPS58169345A (ja) 1982-03-31 1982-03-31 対物レンズ駆動装置

Publications (2)

Publication Number Publication Date
JPS58169345A JPS58169345A (ja) 1983-10-05
JPH0343694B2 true JPH0343694B2 (enrdf_load_stackoverflow) 1991-07-03

Family

ID=12880967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5122482A Granted JPS58169345A (ja) 1982-03-31 1982-03-31 対物レンズ駆動装置

Country Status (1)

Country Link
JP (1) JPS58169345A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131642A (ja) * 1983-12-19 1985-07-13 Matsushita Electric Ind Co Ltd 光学式記録再生装置
JPH0786980B2 (ja) * 1985-02-07 1995-09-20 松下電器産業株式会社 対物レンズ駆動装置
EP0598592B1 (en) * 1992-11-17 1999-09-01 Seiko Epson Corporation Optical head

Also Published As

Publication number Publication date
JPS58169345A (ja) 1983-10-05

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