JPS59135635A - 光ピックアップ - Google Patents

光ピックアップ

Info

Publication number
JPS59135635A
JPS59135635A JP908983A JP908983A JPS59135635A JP S59135635 A JPS59135635 A JP S59135635A JP 908983 A JP908983 A JP 908983A JP 908983 A JP908983 A JP 908983A JP S59135635 A JPS59135635 A JP S59135635A
Authority
JP
Japan
Prior art keywords
tracking
focus
lens
lens barrel
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.)
Granted
Application number
JP908983A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0452532B2 (enrdf_load_stackoverflow
Inventor
Kanji Nishii
西井　完治
Kaoru Imanishi
今西　薫
Akifumi Nakada
中田　彬史
Toshio Sato
佐藤　稔雄
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP908983A priority Critical patent/JPS59135635A/ja
Publication of JPS59135635A publication Critical patent/JPS59135635A/ja
Publication of JPH0452532B2 publication Critical patent/JPH0452532B2/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

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP908983A 1983-01-21 1983-01-21 光ピックアップ Granted JPS59135635A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP908983A JPS59135635A (ja) 1983-01-21 1983-01-21 光ピックアップ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP908983A JPS59135635A (ja) 1983-01-21 1983-01-21 光ピックアップ

Publications (2)

Publication Number Publication Date
JPS59135635A true JPS59135635A (ja) 1984-08-03
JPH0452532B2 JPH0452532B2 (enrdf_load_stackoverflow) 1992-08-24

Family

ID=11710886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP908983A Granted JPS59135635A (ja) 1983-01-21 1983-01-21 光ピックアップ

Country Status (1)

Country Link
JP (1) JPS59135635A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727442A (en) * 1980-07-23 1982-02-13 Olympus Optical Co Ltd Objective lens driving device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727442A (en) * 1980-07-23 1982-02-13 Olympus Optical Co Ltd Objective lens driving device

Also Published As

Publication number Publication date
JPH0452532B2 (enrdf_load_stackoverflow) 1992-08-24

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