TWI268503B - Optical pickup and optical disk apparatus - Google Patents

Optical pickup and optical disk apparatus

Info

Publication number
TWI268503B
TWI268503B TW094132670A TW94132670A TWI268503B TW I268503 B TWI268503 B TW I268503B TW 094132670 A TW094132670 A TW 094132670A TW 94132670 A TW94132670 A TW 94132670A TW I268503 B TWI268503 B TW I268503B
Authority
TW
Taiwan
Prior art keywords
disk
laser light
objective lens
collecting
optical
Prior art date
Application number
TW094132670A
Other languages
English (en)
Other versions
TW200625293A (en
Inventor
Midori Kanaya
Katsutoshi Sato
Kenji Yamamoto
Noriaki Nishi
Noriyuki Mori
Original Assignee
Sony 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
Priority claimed from JP2004322338A external-priority patent/JP2006134474A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of TW200625293A publication Critical patent/TW200625293A/zh
Application granted granted Critical
Publication of TWI268503B publication Critical patent/TWI268503B/zh

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127Lasers; Multiple laser arrays
    • G11B7/1275Two or more lasers having different wavelengths
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372Lenses
    • G11B7/1374Objective lenses
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1395Beam splitters or combiners
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B2007/0003Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
TW094132670A 2004-09-22 2005-09-21 Optical pickup and optical disk apparatus TWI268503B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004274604 2004-09-22
JP2004322338A JP2006134474A (ja) 2004-11-05 2004-11-05 光ピックアップ及び光ディスクドライブ

Publications (2)

Publication Number Publication Date
TW200625293A TW200625293A (en) 2006-07-16
TWI268503B true TWI268503B (en) 2006-12-11

Family

ID=36145110

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094132670A TWI268503B (en) 2004-09-22 2005-09-21 Optical pickup and optical disk apparatus

Country Status (3)

Country Link
US (1) US7564745B2 (zh)
KR (1) KR20060051541A (zh)
TW (1) TWI268503B (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2006064735A1 (ja) * 2004-12-16 2008-06-12 ソニー株式会社 光ピックアップ装置及びこの光ピックアップ装置を用いた光ディスク装置並びにその制御方法
US8144564B2 (en) * 2005-12-14 2012-03-27 Panasonic Corporation Optical head and optical information device
JP4539556B2 (ja) * 2005-12-28 2010-09-08 パナソニック株式会社 光ピックアップ装置及び光ディスク装置
JP4522388B2 (ja) * 2006-04-03 2010-08-11 三洋電機株式会社 対物レンズ駆動装置及びそれを具備した光ピックアップ装置
JP4521376B2 (ja) * 2006-06-02 2010-08-11 株式会社日立メディアエレクトロニクス 光学ヘッドおよびそれを用いたディスク駆動装置
JP2008027565A (ja) 2006-06-21 2008-02-07 Sharp Corp 光ピックアップ
CN101140772B (zh) * 2006-09-07 2012-10-10 松下电器产业株式会社 光学头和光盘装置
JP5069893B2 (ja) * 2006-10-18 2012-11-07 株式会社日立メディアエレクトロニクス 光ピックアップ及び光ディスクドライブ
JP4357557B2 (ja) * 2006-12-27 2009-11-04 株式会社東芝 光ヘッド,および光ディスク装置
JP2008181626A (ja) * 2007-01-26 2008-08-07 Funai Electric Co Ltd 光ピックアップ
JP5042782B2 (ja) * 2007-11-07 2012-10-03 株式会社日立メディアエレクトロニクス 光ピックアップ装置及びこれを備えた光ディスク装置
JP5121762B2 (ja) * 2009-03-19 2013-01-16 株式会社日立メディアエレクトロニクス 光ピックアップ
JP2012064259A (ja) * 2010-09-14 2012-03-29 Sanyo Electric Co Ltd 光ピックアップ装置
KR101533373B1 (ko) * 2014-07-16 2015-07-02 (주)아이엠 광- 픽업 장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100278786B1 (ko) * 1998-06-18 2001-01-15 구자홍 광기록매체와 광 기록/재생 방법 및 장치
TW432378B (en) 1999-04-13 2001-05-01 Ind Tech Res Inst A multiple-wavelength read/write pickup head for DVD
JP3547000B2 (ja) * 2000-05-30 2004-07-28 シャープ株式会社 光ピックアップ装置
JP4175092B2 (ja) * 2002-11-06 2008-11-05 日本電気株式会社 光ヘッド装置および光学式情報記録再生装置
TWI346952B (en) * 2003-07-07 2011-08-11 Panasonic Corp Objective lens, optical pick-up device, and optical disk device

Also Published As

Publication number Publication date
US20060077784A1 (en) 2006-04-13
TW200625293A (en) 2006-07-16
US7564745B2 (en) 2009-07-21
KR20060051541A (ko) 2006-05-19

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Legal Events

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