JPS6233656B2 - - Google Patents

Info

Publication number
JPS6233656B2
JPS6233656B2 JP20699281A JP20699281A JPS6233656B2 JP S6233656 B2 JPS6233656 B2 JP S6233656B2 JP 20699281 A JP20699281 A JP 20699281A JP 20699281 A JP20699281 A JP 20699281A JP S6233656 B2 JPS6233656 B2 JP S6233656B2
Authority
JP
Japan
Prior art keywords
tracking
permanent magnet
focus
fixed
objective lens
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
JP20699281A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58111135A (ja
Inventor
Tsutomu Matsui
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.)
Akai Electric Co Ltd
Original Assignee
Akai 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP20699281A priority Critical patent/JPS58111135A/ja
Publication of JPS58111135A publication Critical patent/JPS58111135A/ja
Publication of JPS6233656B2 publication Critical patent/JPS6233656B2/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
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP20699281A 1981-12-23 1981-12-23 光ピツクアツプ装置の対物レンズ上下左右移動装置 Granted JPS58111135A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20699281A JPS58111135A (ja) 1981-12-23 1981-12-23 光ピツクアツプ装置の対物レンズ上下左右移動装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20699281A JPS58111135A (ja) 1981-12-23 1981-12-23 光ピツクアツプ装置の対物レンズ上下左右移動装置

Publications (2)

Publication Number Publication Date
JPS58111135A JPS58111135A (ja) 1983-07-02
JPS6233656B2 true JPS6233656B2 (enrdf_load_stackoverflow) 1987-07-22

Family

ID=16532384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20699281A Granted JPS58111135A (ja) 1981-12-23 1981-12-23 光ピツクアツプ装置の対物レンズ上下左右移動装置

Country Status (1)

Country Link
JP (1) JPS58111135A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818066A (en) * 1984-01-30 1989-04-04 Canon Kabushiki Kaisha Objective lens driving device
KR900006183B1 (ko) * 1986-03-04 1990-08-25 상요 덴기 가부시기가이샤 광학식 픽업 장치

Also Published As

Publication number Publication date
JPS58111135A (ja) 1983-07-02

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