JPH0522975B2 - - Google Patents

Info

Publication number
JPH0522975B2
JPH0522975B2 JP59205552A JP20555284A JPH0522975B2 JP H0522975 B2 JPH0522975 B2 JP H0522975B2 JP 59205552 A JP59205552 A JP 59205552A JP 20555284 A JP20555284 A JP 20555284A JP H0522975 B2 JPH0522975 B2 JP H0522975B2
Authority
JP
Japan
Prior art keywords
magnet
coil
optical head
head device
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 - Lifetime
Application number
JP59205552A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6185640A (ja
Inventor
Akihiro Kasahara
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP20555284A priority Critical patent/JPS6185640A/ja
Priority to EP85306415A priority patent/EP0178077B1/en
Priority to DE8585306415T priority patent/DE3574302D1/de
Priority to US06/775,383 priority patent/US4759005A/en
Publication of JPS6185640A publication Critical patent/JPS6185640A/ja
Publication of JPH0522975B2 publication Critical patent/JPH0522975B2/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
    • G11B7/0932—Details of sprung supports
    • 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
    • G11B7/0935—Details of the moving parts

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP20555284A 1984-10-02 1984-10-02 光学ヘツド装置 Granted JPS6185640A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP20555284A JPS6185640A (ja) 1984-10-02 1984-10-02 光学ヘツド装置
EP85306415A EP0178077B1 (en) 1984-10-02 1985-09-10 Optical head apparatus for recording and reproducing data on a recording medium
DE8585306415T DE3574302D1 (en) 1984-10-02 1985-09-10 Optical head apparatus for recording and reproducing data on a recording medium
US06/775,383 US4759005A (en) 1984-10-02 1985-09-12 Optical head apparatus for recording and reproducing data on a reording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20555284A JPS6185640A (ja) 1984-10-02 1984-10-02 光学ヘツド装置

Publications (2)

Publication Number Publication Date
JPS6185640A JPS6185640A (ja) 1986-05-01
JPH0522975B2 true JPH0522975B2 (en, 2012) 1993-03-31

Family

ID=16508778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20555284A Granted JPS6185640A (ja) 1984-10-02 1984-10-02 光学ヘツド装置

Country Status (1)

Country Link
JP (1) JPS6185640A (en, 2012)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828146A1 (de) * 1988-08-19 1990-02-22 Philips Patentverwaltung Elektrodynamischer aktuator fuer eine optische einschreib- und ausleseeinheit
JP2684762B2 (ja) * 1989-04-20 1997-12-03 ソニー株式会社 対物レンズ駆動装置
TW239211B (en) * 1993-04-02 1995-01-21 Hyundai Electronics America Electromagnetic lens actuator for optical disk drive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812144A (ja) * 1981-07-13 1983-01-24 Matsushita Electric Ind Co Ltd 対物レンズ駆動装置
JPS5987630A (ja) * 1982-11-10 1984-05-21 Hitachi Ltd 光学ヘツド駆動装置

Also Published As

Publication number Publication date
JPS6185640A (ja) 1986-05-01

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term