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TW200639845A - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
TW200639845A
TW200639845A TW095105206A TW95105206A TW200639845A TW 200639845 A TW200639845 A TW 200639845A TW 095105206 A TW095105206 A TW 095105206A TW 95105206 A TW95105206 A TW 95105206A TW 200639845 A TW200639845 A TW 200639845A
Authority
TW
Taiwan
Prior art keywords
lens
correcting lens
pickup device
object lens
optical pickup
Prior art date
Application number
TW095105206A
Other languages
Chinese (zh)
Other versions
TWI336078B (en
Inventor
Toshiya Matozaki
Nobuo Takeshita
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of TW200639845A publication Critical patent/TW200639845A/en
Application granted granted Critical
Publication of TWI336078B publication Critical patent/TWI336078B/en

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
    • 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
    • G11B7/0946—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 specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

To provide an optical pickup device comprising an object lens (1) for condensing light beam on the information layer of disk media, an object lens driving unit for driving the object lens (1) in the focus servo direction and track servo direction, a correcting lens (14) disposed at the same optical axis as that of object lens (1), and a correcting lens driving unit for driving the correcting lens in the same direction as the focus servo direction so as to control the state of the light beam entering into object lens, whereby the miniaturization of optical pickup device and the high speed displacement of correcting lens are possible. Moreover, even at the time when current is not supplied, the position and postures of correcting lens can be maintained, and the variation of position and posture of correcting lens can be prevented.
TW95105206A 2005-04-27 2006-02-16 Optical pickup device TWI336078B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005128898A JP3970290B2 (en) 2005-04-27 2005-04-27 Optical pickup device

Publications (2)

Publication Number Publication Date
TW200639845A true TW200639845A (en) 2006-11-16
TWI336078B TWI336078B (en) 2011-01-11

Family

ID=37307712

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95105206A TWI336078B (en) 2005-04-27 2006-02-16 Optical pickup device

Country Status (3)

Country Link
JP (1) JP3970290B2 (en)
TW (1) TWI336078B (en)
WO (1) WO2006117906A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008204516A (en) * 2007-02-19 2008-09-04 Hitachi Ltd Optical disk device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737264A (en) * 1993-07-21 1995-02-07 Sony Corp 2-axis actuator
JPH07210882A (en) * 1994-01-13 1995-08-11 Canon Inc Optical pickup drive
JP2002352449A (en) * 2001-05-23 2002-12-06 Sony Corp Optical pickup device and recording / reproducing device
JP3505525B2 (en) * 2001-07-27 2004-03-08 株式会社東芝 Optical head and optical disk device
JP2004101587A (en) * 2002-09-05 2004-04-02 Nec Corp Lens driver
JP2005251352A (en) * 2004-03-08 2005-09-15 Olympus Corp Optical pickup

Also Published As

Publication number Publication date
JP3970290B2 (en) 2007-09-05
TWI336078B (en) 2011-01-11
WO2006117906A1 (en) 2006-11-09
JP2006309830A (en) 2006-11-09

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees