TW200617932A - Optical pickup - Google Patents

Optical pickup

Info

Publication number
TW200617932A
TW200617932A TW094132822A TW94132822A TW200617932A TW 200617932 A TW200617932 A TW 200617932A TW 094132822 A TW094132822 A TW 094132822A TW 94132822 A TW94132822 A TW 94132822A TW 200617932 A TW200617932 A TW 200617932A
Authority
TW
Taiwan
Prior art keywords
lines
optical pickup
areas
light amount
passing
Prior art date
Application number
TW094132822A
Other languages
English (en)
Inventor
Masahiko Nishimoto
Yasuyuki Kochi
Shinichi Ijima
Takuya Okuda
Masayuki Ono
Original Assignee
Matsushita Electric Ind 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 Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200617932A publication Critical patent/TW200617932A/zh

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
    • G11B7/0901—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 track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical 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
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, 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 Recording Or Reproduction (AREA)
  • Optical Head (AREA)
TW094132822A 2004-11-16 2005-09-22 Optical pickup TW200617932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004331789 2004-11-16

Publications (1)

Publication Number Publication Date
TW200617932A true TW200617932A (en) 2006-06-01

Family

ID=36406929

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094132822A TW200617932A (en) 2004-11-16 2005-09-22 Optical pickup

Country Status (5)

Country Link
US (1) US7830773B2 (zh)
JP (1) JPWO2006054383A1 (zh)
CN (1) CN101061538A (zh)
TW (1) TW200617932A (zh)
WO (1) WO2006054383A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4277005B2 (ja) 2005-01-26 2009-06-10 パナソニック株式会社 光ピックアップ装置
JP5378120B2 (ja) * 2009-09-02 2013-12-25 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それを用いた光ディスク装置
JP2011165290A (ja) * 2010-02-12 2011-08-25 Sharp Corp 光ピックアップ装置及びそれを備えた光記録再生装置
JP5318033B2 (ja) * 2010-05-28 2013-10-16 株式会社日立メディアエレクトロニクス 光ピックアップ装置
JP2012053929A (ja) * 2010-08-31 2012-03-15 Hitachi Media Electoronics Co Ltd 光ピックアップ

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01311428A (ja) * 1988-06-09 1989-12-15 Matsushita Electric Ind Co Ltd 光ヘッド装置及びこれを用いた光情報装置
US5272690A (en) * 1992-03-05 1993-12-21 International Business Machines Corporation Hologram element system
DE69330357T2 (de) * 1992-08-07 2001-10-31 Matsushita Electric Ind Co Ltd Optische Speichervorrichtung
DE69426712T2 (de) * 1993-06-02 2001-09-27 Matsushita Electric Ind Co Ltd Optische Kopfvorrichtung und optisches Informationsgerät
JP3484767B2 (ja) * 1994-07-04 2004-01-06 松下電器産業株式会社 光ヘッド装置、光情報装置及びハイブリッド素子
JPH09245356A (ja) * 1996-03-12 1997-09-19 Seiko Epson Corp 光学ヘッドおよび光記録装置
KR100375514B1 (ko) * 1997-10-20 2003-11-28 삼성전기주식회사 광픽업장치
US6072579A (en) * 1998-08-27 2000-06-06 Ricoh Company, Ltd. Optical pickup apparatus having improved holographic optical element and photodetector
JP2001014717A (ja) 1999-04-28 2001-01-19 Matsushita Electronics Industry Corp 光学装置
JP2004047093A (ja) * 1999-04-28 2004-02-12 Matsushita Electric Ind Co Ltd 光学装置
US6985424B1 (en) 1999-08-04 2006-01-10 Hitachi, Ltd. Laser module and optical head
US6512608B2 (en) 1999-12-16 2003-01-28 Victor Company Of Japan, Limited Optical device
JP3518457B2 (ja) 1999-12-16 2004-04-12 日本ビクター株式会社 光デバイス
JP2001202638A (ja) * 2000-01-19 2001-07-27 Sanyo Electric Co Ltd 光ピックアップ装置、およびそれを用いた光ディスク装置
JP2001256657A (ja) * 2000-03-15 2001-09-21 Sanyo Electric Co Ltd 光ピックアップ装置およびそれを用いた光ディスク装置
JP2002056550A (ja) 2000-08-04 2002-02-22 Sharp Corp 光ピックアップ、該ピックアップを用いた情報記録再生装置および情報記録再生方法
JP2002123952A (ja) * 2000-08-09 2002-04-26 Ricoh Co Ltd 光ピックアップ装置及び光ディスクドライブ装置
DE60110703T2 (de) * 2000-08-09 2006-05-04 Ricoh Co., Ltd. Optisches Abtastgerät mit einer verbesserten holographischen Einheit und optisches Plattengerät dies enthaltend
JP2003338076A (ja) * 2002-03-14 2003-11-28 Ricoh Co Ltd 光ピックアップ装置、偏光光学素子の製造方法及び光ディスク装置
JP2004158169A (ja) * 2002-10-18 2004-06-03 Matsushita Electric Ind Co Ltd 光ディスク装置及び光分岐装置
US20040081043A1 (en) 2002-10-18 2004-04-29 Matsushita Electric Industrial Co., Ltd. Optical disk device and optical splitting device

Also Published As

Publication number Publication date
WO2006054383A1 (ja) 2006-05-26
JPWO2006054383A1 (ja) 2008-05-29
CN101061538A (zh) 2007-10-24
US20090034394A1 (en) 2009-02-05
US7830773B2 (en) 2010-11-09

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