JPS5744237A - Position controller of light flux - Google Patents

Position controller of light flux

Info

Publication number
JPS5744237A
JPS5744237A JP12047480A JP12047480A JPS5744237A JP S5744237 A JPS5744237 A JP S5744237A JP 12047480 A JP12047480 A JP 12047480A JP 12047480 A JP12047480 A JP 12047480A JP S5744237 A JPS5744237 A JP S5744237A
Authority
JP
Japan
Prior art keywords
time axis
tracking control
correction
axis
focusing control
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
JP12047480A
Other languages
Japanese (ja)
Inventor
Kanji Nishii
Yoshikazu Goto
Shunji Harikae
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 JP12047480A priority Critical patent/JPS5744237A/en
Publication of JPS5744237A publication Critical patent/JPS5744237A/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
    • G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam
    • 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
    • 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

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To ensure the independent operation for the focusing control the tracking control or the correction of time axis, by securing a free rotation of an objective lens barrel in the direction perpendicular to the optical axis as well as a shift toward the optical axis. CONSTITUTION:When the tracking control current or the time axis correcting current flows to movable coils 7 and 7', a lens barrel 6 receives the force in the direction perpendicular to an optical axis 5 by the electromagnetic function of magnetic circuits 8 and 8' and has a free rotary movement around an axis-shaped member 15 to perform the tracking control or the time axis correction. In this case, the damping during the rotary movement is carried out by elastic members 14 and 14'. When the focusing control current flows to a cylindrical movable coil 11, a coil carrier 12, the barrel 6 plus coils 7 and 7' move in a body to direction Z by the function of a magnetic circuit 10 to perform the focusing control. In such way, the focusing control, the tracking control or the correction of time axis can be carried out independently from each other.
JP12047480A 1980-08-29 1980-08-29 Position controller of light flux Pending JPS5744237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12047480A JPS5744237A (en) 1980-08-29 1980-08-29 Position controller of light flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12047480A JPS5744237A (en) 1980-08-29 1980-08-29 Position controller of light flux

Publications (1)

Publication Number Publication Date
JPS5744237A true JPS5744237A (en) 1982-03-12

Family

ID=14787063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12047480A Pending JPS5744237A (en) 1980-08-29 1980-08-29 Position controller of light flux

Country Status (1)

Country Link
JP (1) JPS5744237A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111381342A (en) * 2018-12-28 2020-07-07 大阳科技股份有限公司 Lens driving module and electronic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111381342A (en) * 2018-12-28 2020-07-07 大阳科技股份有限公司 Lens driving module and electronic device

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