JPS57208643A - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
JPS57208643A
JPS57208643A JP9451081A JP9451081A JPS57208643A JP S57208643 A JPS57208643 A JP S57208643A JP 9451081 A JP9451081 A JP 9451081A JP 9451081 A JP9451081 A JP 9451081A JP S57208643 A JPS57208643 A JP S57208643A
Authority
JP
Japan
Prior art keywords
axis direction
optical axis
displacement
mobile part
optical pickup
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.)
Pending
Application number
JP9451081A
Other languages
Japanese (ja)
Inventor
Hideshi Kenjo
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 Corp
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 Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP9451081A priority Critical patent/JPS57208643A/en
Publication of JPS57208643A publication Critical patent/JPS57208643A/en
Pending 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
    • G11B7/0908—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 for focusing only

Abstract

PURPOSE:To increase the range of the working displacement in the optical axis direction of an objective lens, by holding an optical pickup at a mobile part which can have a displacement to the optical axis direction and giving a displacement to the mobile part in the optical axis direction by means of a driving source which is driven by the DC component of the focus error signal. CONSTITUTION:An inner case 31 containing an optical pickup, i.e., a mobile part is displaced in the optical axis direction of an objective lens secondary driving devide 6 by means of a driving force transmitting mechanism stored in an outer case 32. The rotation of a motor 36 is converted into a linear motion of a cam 38 by a gear mechanism 37. Thus the post 41 of a roller 42 moves up and down, i.e., in the optical axis direction to give a displacement the centroid part 40 of a middle 33 of the case 31 to the optical axis direction. The degree of this displacement is equivalent to the DC component of the focus error signal which is supplied to the motor 36. The direction of the displacement is held accurately at the optical axis direction by the effect of the rubbing mechanisms 35 and 35'.
JP9451081A 1981-06-18 1981-06-18 Optical pickup device Pending JPS57208643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9451081A JPS57208643A (en) 1981-06-18 1981-06-18 Optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9451081A JPS57208643A (en) 1981-06-18 1981-06-18 Optical pickup device

Publications (1)

Publication Number Publication Date
JPS57208643A true JPS57208643A (en) 1982-12-21

Family

ID=14112311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9451081A Pending JPS57208643A (en) 1981-06-18 1981-06-18 Optical pickup device

Country Status (1)

Country Link
JP (1) JPS57208643A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005098834A1 (en) * 2004-03-31 2005-10-20 Pioneer Corporation Optical pickup device and objective lens drive device for the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005098834A1 (en) * 2004-03-31 2005-10-20 Pioneer Corporation Optical pickup device and objective lens drive device for the same

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