WO2008120371A1 - 情報記録再生装置 - Google Patents

情報記録再生装置 Download PDF

Info

Publication number
WO2008120371A1
WO2008120371A1 PCT/JP2007/056932 JP2007056932W WO2008120371A1 WO 2008120371 A1 WO2008120371 A1 WO 2008120371A1 JP 2007056932 W JP2007056932 W JP 2007056932W WO 2008120371 A1 WO2008120371 A1 WO 2008120371A1
Authority
WO
WIPO (PCT)
Prior art keywords
sub
received
light related
light
main beam
Prior art date
Application number
PCT/JP2007/056932
Other languages
English (en)
French (fr)
Inventor
Kunihiko Horikawa
Eiji Muramatsu
Masahiro Miura
Atsushi Yamaguchi
Kazuo Kuroda
Kazutoshi Kitano
Original Assignee
Pioneer Corporation
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 Pioneer Corporation filed Critical Pioneer Corporation
Priority to PCT/JP2007/056932 priority Critical patent/WO2008120371A1/ja
Priority to JP2009509012A priority patent/JPWO2008126620A1/ja
Priority to US12/593,355 priority patent/US20100135140A1/en
Priority to PCT/JP2008/054646 priority patent/WO2008126620A1/ja
Publication of WO2008120371A1 publication Critical patent/WO2008120371A1/ja

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
    • G11B7/0908—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 focusing only
    • 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
    • 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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
    • 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
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

情報記録再生装置（１）は、レーザ光を、回折手段（１４）によりメインビームとサブビームとに分離するように回折させ、メインビームに係るエバネッセント光を、エバネッセント光発生手段（２１）により、記録ピットの形成されているトラックに対して照射させると共に、分離されるサブビームに係るエバネッセント光を記録ピットの形成されていないトラックに対して照射させる。移動手段（２１０）は、エバネッセント光発生手段を記録面とのギャップを変化させる方向に移動させる。そして、サブビームに係る戻り光はサブ受光手段（３１１）で、メインビームに係るそれはメイン受光（３１２）手段で受光され、制御手段（３１５）は、受光されるサブビームに係る戻り光の光量と受光されるメインビームに係る戻り光の光量とからなるギャップエラー信号に基づいて、ギャップが所定の目標値になるように、移動手段を制御する。
PCT/JP2007/056932 2007-03-29 2007-03-29 情報記録再生装置 WO2008120371A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2007/056932 WO2008120371A1 (ja) 2007-03-29 2007-03-29 情報記録再生装置
JP2009509012A JPWO2008126620A1 (ja) 2007-03-29 2008-03-13 情報記録再生装置
US12/593,355 US20100135140A1 (en) 2007-03-29 2008-03-13 Information recording and reproducing device
PCT/JP2008/054646 WO2008126620A1 (ja) 2007-03-29 2008-03-13 情報記録再生装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/056932 WO2008120371A1 (ja) 2007-03-29 2007-03-29 情報記録再生装置

Publications (1)

Publication Number Publication Date
WO2008120371A1 true WO2008120371A1 (ja) 2008-10-09

Family

ID=39807964

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2007/056932 WO2008120371A1 (ja) 2007-03-29 2007-03-29 情報記録再生装置
PCT/JP2008/054646 WO2008126620A1 (ja) 2007-03-29 2008-03-13 情報記録再生装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/054646 WO2008126620A1 (ja) 2007-03-29 2008-03-13 情報記録再生装置

Country Status (3)

Country Link
US (1) US20100135140A1 (ja)
JP (1) JPWO2008126620A1 (ja)
WO (2) WO2008120371A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008120370A1 (ja) * 2007-03-29 2008-10-09 Pioneer Corporation 情報記録再生装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285486A (ja) * 1999-03-31 2000-10-13 Toshiba Corp 情報記録再生装置
JP2006331471A (ja) * 2005-05-23 2006-12-07 Canon Inc 光情報記録再生装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208609B1 (en) * 1998-11-12 2001-03-27 New Dimension Research & Instrument, Inc. Optical system with interactive data capability
JP2005332447A (ja) * 2004-05-18 2005-12-02 Sony Corp 光学ピックアップ装置、光記録再生装置及びギャップ検出方法
JP4449819B2 (ja) * 2005-05-17 2010-04-14 ソニー株式会社 光再生方法、波形等化方法及び光記録再生装置
DE602006003436D1 (de) * 2005-07-04 2008-12-11 Koninkl Philips Electronics Nv Optische aufnahme- und/oder aufzeichnungsvorrichtung
WO2008120372A1 (ja) * 2007-03-29 2008-10-09 Pioneer Corporation 情報記録再生装置
WO2008120370A1 (ja) * 2007-03-29 2008-10-09 Pioneer Corporation 情報記録再生装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000285486A (ja) * 1999-03-31 2000-10-13 Toshiba Corp 情報記録再生装置
JP2006331471A (ja) * 2005-05-23 2006-12-07 Canon Inc 光情報記録再生装置

Also Published As

Publication number Publication date
US20100135140A1 (en) 2010-06-03
WO2008126620A1 (ja) 2008-10-23
JPWO2008126620A1 (ja) 2010-07-22

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