JPS5727442A - Objective lens driving device - Google Patents

Objective lens driving device

Info

Publication number
JPS5727442A
JPS5727442A JP10175680A JP10175680A JPS5727442A JP S5727442 A JPS5727442 A JP S5727442A JP 10175680 A JP10175680 A JP 10175680A JP 10175680 A JP10175680 A JP 10175680A JP S5727442 A JPS5727442 A JP S5727442A
Authority
JP
Japan
Prior art keywords
objective lens
time base
driving device
lens driving
coil
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
JP10175680A
Other languages
Japanese (ja)
Inventor
Kunio Yamamiya
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 JP10175680A priority Critical patent/JPS5727442A/en
Publication of JPS5727442A publication Critical patent/JPS5727442A/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
    • G11B7/0929—Electromechanical actuators for lens positioning for tracking only

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To miniaturize an objective lens driving device, by applying the magnetic field to a magnetic material unified with an objective lens from two directions orthogonal to each other and thus correcting both a tracking error and a time base error. CONSTITUTION:An objective lens 11 is held by a holding frame 12 of a nonmagnetic material, and a magnetic member 13 is fixed to the frame 12. The both ends of the member 13 are set opposedly to the N and S poles of an L-shaped permanent magnet 14 respectively. Coils 15 and 16 are wound round both ends 14a and 14b of the magnet 14. When the current is flowed as shown in the diagram, the member 13 receives the force shown by arrows (y) and (x). For instance, a tracking error signal is supplied to the coil 15, and a time base error signal is supplied to the coil 16 to correct the tracking and time base errors respectively.
JP10175680A 1980-07-23 1980-07-23 Objective lens driving device Pending JPS5727442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10175680A JPS5727442A (en) 1980-07-23 1980-07-23 Objective lens driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10175680A JPS5727442A (en) 1980-07-23 1980-07-23 Objective lens driving device

Publications (1)

Publication Number Publication Date
JPS5727442A true JPS5727442A (en) 1982-02-13

Family

ID=14309069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10175680A Pending JPS5727442A (en) 1980-07-23 1980-07-23 Objective lens driving device

Country Status (1)

Country Link
JP (1) JPS5727442A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59135635A (en) * 1983-01-21 1984-08-03 Matsushita Electric Ind Co Ltd Optical pickup
JPS59135636A (en) * 1983-01-21 1984-08-03 Matsushita Electric Ind Co Ltd Optical pickup
JPS59180836A (en) * 1983-03-30 1984-10-15 Mitsubishi Electric Corp 3-dimensional control driver
JPS59227041A (en) * 1983-06-06 1984-12-20 Mitsubishi Electric Corp Three-dimensional control driving device of optical disk reproduing device
JPS6145724U (en) * 1985-07-09 1986-03-26 パイオニア株式会社 Pickup device for optical information reading device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59135635A (en) * 1983-01-21 1984-08-03 Matsushita Electric Ind Co Ltd Optical pickup
JPS59135636A (en) * 1983-01-21 1984-08-03 Matsushita Electric Ind Co Ltd Optical pickup
JPH0452532B2 (en) * 1983-01-21 1992-08-24 Matsushita Electric Ind Co Ltd
JPS59180836A (en) * 1983-03-30 1984-10-15 Mitsubishi Electric Corp 3-dimensional control driver
JPH0519208B2 (en) * 1983-03-30 1993-03-16 Mitsubishi Electric Corp
JPS59227041A (en) * 1983-06-06 1984-12-20 Mitsubishi Electric Corp Three-dimensional control driving device of optical disk reproduing device
JPH0462136B2 (en) * 1983-06-06 1992-10-05 Mitsubishi Electric Corp
JPS6145724U (en) * 1985-07-09 1986-03-26 パイオニア株式会社 Pickup device for optical information reading device

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