WO2008114406A1 - 光ピックアップ、及び再生装置 - Google Patents

光ピックアップ、及び再生装置 Download PDF

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Publication number
WO2008114406A1
WO2008114406A1 PCT/JP2007/055637 JP2007055637W WO2008114406A1 WO 2008114406 A1 WO2008114406 A1 WO 2008114406A1 JP 2007055637 W JP2007055637 W JP 2007055637W WO 2008114406 A1 WO2008114406 A1 WO 2008114406A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
immersion lens
solid immersion
optical pickup
reproducer
Prior art date
Application number
PCT/JP2007/055637
Other languages
English (en)
French (fr)
Inventor
Kazutoshi Kitano
Eiji Muramatsu
Kazuo Kuroda
Kunihiko Horikawa
Masahiro Miura
Atsushi Yamaguchi
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/JP2007/055637 priority Critical patent/WO2008114406A1/ja
Priority to JP2009505005A priority patent/JPWO2008114406A1/ja
Publication of WO2008114406A1 publication Critical patent/WO2008114406A1/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
    • G11B7/12—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
    • G11B7/1387—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
    • G11B7/08—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

Landscapes

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

Abstract

光ピックアップ（１００）は、記録媒体（１）に光（Ｌ）を照射する光源（１０１）と、照射された光の光路内に配置されると共に、記録媒体の表面に近接して配置される固体浸レンズ（１０８）と、光路内の一部に配置され、照射された光の一部が固体浸レンズの底部に形成するスポットのサイズを拡大するスポットサイズ拡大手段（１０２）と、光の一部に起因する前記底部からの反射光を受光して、前記表面及び固体浸レンズ間のギャップを制御するためのギャップエラー信号を出力するギャップエラー信号生成手段（１１０）とを備える。
PCT/JP2007/055637 2007-03-20 2007-03-20 光ピックアップ、及び再生装置 WO2008114406A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/055637 WO2008114406A1 (ja) 2007-03-20 2007-03-20 光ピックアップ、及び再生装置
JP2009505005A JPWO2008114406A1 (ja) 2007-03-20 2007-03-20 光ピックアップ、及び再生装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/055637 WO2008114406A1 (ja) 2007-03-20 2007-03-20 光ピックアップ、及び再生装置

Publications (1)

Publication Number Publication Date
WO2008114406A1 true WO2008114406A1 (ja) 2008-09-25

Family

ID=39765527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/055637 WO2008114406A1 (ja) 2007-03-20 2007-03-20 光ピックアップ、及び再生装置

Country Status (2)

Country Link
JP (1) JPWO2008114406A1 (ja)
WO (1) WO2008114406A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011004461A1 (ja) * 2009-07-07 2011-01-13 パイオニア株式会社 光検出器及び光ピックアップ、並びに制御方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000200434A (ja) * 1998-10-28 2000-07-18 Sony Corp 距離変化検知方法及び装置、フォ―カス制御方法及び装置、並びに全反射光検出方法
JP2000285486A (ja) * 1999-03-31 2000-10-13 Toshiba Corp 情報記録再生装置
JP2003077166A (ja) * 2001-08-30 2003-03-14 Tosoh Corp 光記録再生装置
JP2003255551A (ja) * 2002-02-28 2003-09-10 Sony Corp 露光装置および露光方法
JP2006323897A (ja) * 2005-05-17 2006-11-30 Sony Corp 光再生方法、波形等化方法及び光記録再生装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006344351A (ja) * 2005-05-13 2006-12-21 Sony Corp 光記録再生装置、光学ヘッド、光記録再生方法及びスキュー検出方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000200434A (ja) * 1998-10-28 2000-07-18 Sony Corp 距離変化検知方法及び装置、フォ―カス制御方法及び装置、並びに全反射光検出方法
JP2000285486A (ja) * 1999-03-31 2000-10-13 Toshiba Corp 情報記録再生装置
JP2003077166A (ja) * 2001-08-30 2003-03-14 Tosoh Corp 光記録再生装置
JP2003255551A (ja) * 2002-02-28 2003-09-10 Sony Corp 露光装置および露光方法
JP2006323897A (ja) * 2005-05-17 2006-11-30 Sony Corp 光再生方法、波形等化方法及び光記録再生装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011004461A1 (ja) * 2009-07-07 2011-01-13 パイオニア株式会社 光検出器及び光ピックアップ、並びに制御方法

Also Published As

Publication number Publication date
JPWO2008114406A1 (ja) 2010-07-01

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