JPS639307B2 - - Google Patents

Info

Publication number
JPS639307B2
JPS639307B2 JP1720880A JP1720880A JPS639307B2 JP S639307 B2 JPS639307 B2 JP S639307B2 JP 1720880 A JP1720880 A JP 1720880A JP 1720880 A JP1720880 A JP 1720880A JP S639307 B2 JPS639307 B2 JP S639307B2
Authority
JP
Japan
Prior art keywords
objective lens
movable member
fixed
optical axis
permanent magnet
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
JP1720880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56117337A (en
Inventor
Tooru Musha
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP1720880A priority Critical patent/JPS56117337A/ja
Priority to GB8011937A priority patent/GB2052829B/en
Priority to FR8008310A priority patent/FR2455331B1/fr
Priority to NL8002157A priority patent/NL192640C/nl
Priority to US06/139,756 priority patent/US4479051A/en
Priority to DE3015042A priority patent/DE3015042C2/de
Publication of JPS56117337A publication Critical patent/JPS56117337A/ja
Publication of JPS639307B2 publication Critical patent/JPS639307B2/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)
JP1720880A 1979-04-27 1980-02-16 Driving device for objective lens Granted JPS56117337A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1720880A JPS56117337A (en) 1980-02-16 1980-02-16 Driving device for objective lens
GB8011937A GB2052829B (en) 1979-04-27 1980-04-10 Apparatus for driving objective lens in tracking direction
FR8008310A FR2455331B1 (fr) 1979-04-27 1980-04-14 Appareil de commande d'objectif pour la correction d'erreurs de position
NL8002157A NL192640C (nl) 1979-04-27 1980-04-14 Inrichting voor het besturen van een objectieflens ten gebruike bij een stelsel voor het lezen van optische informatie.
US06/139,756 US4479051A (en) 1979-04-27 1980-04-14 Apparatus for driving objective lens in tracking direction
DE3015042A DE3015042C2 (de) 1979-04-27 1980-04-18 Verstelleinrichtung für das Beleuchtungs-Objektiv eines Wiedergabegeräts für plattenförmige, optisch lesbare, rotierende Aufzeichnungsträger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1720880A JPS56117337A (en) 1980-02-16 1980-02-16 Driving device for objective lens

Publications (2)

Publication Number Publication Date
JPS56117337A JPS56117337A (en) 1981-09-14
JPS639307B2 true JPS639307B2 (fr) 1988-02-26

Family

ID=11937515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1720880A Granted JPS56117337A (en) 1979-04-27 1980-02-16 Driving device for objective lens

Country Status (1)

Country Link
JP (1) JPS56117337A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898850A (ja) * 1981-12-08 1983-06-11 Sanyo Electric Co Ltd 対物レンズ駆動装置
JPS5933128U (ja) * 1982-08-26 1984-03-01 パイオニア株式会社 光学式情報読取装置におけるピツクアツプ装置
JPS6069841A (ja) * 1983-09-26 1985-04-20 Toshiba Corp 光学ヘッド装置
JPS61208641A (ja) * 1985-03-13 1986-09-17 Olympus Optical Co Ltd 光学的情報記録再生装置

Also Published As

Publication number Publication date
JPS56117337A (en) 1981-09-14

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