WO2008111381A1 - 光ピックアップ装置及び情報記録再生装置 - Google Patents

光ピックアップ装置及び情報記録再生装置 Download PDF

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Publication number
WO2008111381A1
WO2008111381A1 PCT/JP2008/053056 JP2008053056W WO2008111381A1 WO 2008111381 A1 WO2008111381 A1 WO 2008111381A1 JP 2008053056 W JP2008053056 W JP 2008053056W WO 2008111381 A1 WO2008111381 A1 WO 2008111381A1
Authority
WO
WIPO (PCT)
Prior art keywords
information recording
light
objective lens
reproducing
diffraction
Prior art date
Application number
PCT/JP2008/053056
Other languages
English (en)
French (fr)
Inventor
Yuki Ono
Original Assignee
Konica Minolta Opto, Inc.
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 Konica Minolta Opto, Inc. filed Critical Konica Minolta Opto, Inc.
Priority to JP2009503950A priority Critical patent/JPWO2008111381A1/ja
Priority to CN2008800078174A priority patent/CN101632122B/zh
Publication of WO2008111381A1 publication Critical patent/WO2008111381A1/ja

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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
    • G11B7/1372—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
    • G11B7/1353—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
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

　本発明は、複層の情報記録面を有する光情報記録媒体に対して適切に情報の記録及び／又は再生を行える光ピックアップ装置及び情報記録再生装置を提供する。 互換用の回折構造を設けた対物レンズＯＢＪの光軸直交方向に対して、実線で示すように光情報記録媒体の複層の情報記録面ＬＹ１、ＬＹ２を傾けて、光源から対物レンズＯＢＪの光軸に沿って光束を入射させる。回折構造から発生したｎ次回折光は、情報記録面ＬＹ１で反射し、対物レンズＯＢＪの光軸に対して傾いた方向に戻り、光検出器ＰＤｙで検出される。一方、ｍ（≠ｎ）次回折光が、情報記録面ＬＹ２で集光された場合、対物レンズＯＢＪの光軸に対して傾いた方向に戻るが、２つの反射光Ｒ１、Ｒ２は、シフトして平行になる。従って、反射光Ｒ１のみを検出できる位置に光検出器ＰＤｙを配置すれば、反射光Ｒ２を誤検出する恐れが少なくなり、適切な情報の記録及び／又は再生を行うことができる。
PCT/JP2008/053056 2007-03-13 2008-02-22 光ピックアップ装置及び情報記録再生装置 WO2008111381A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009503950A JPWO2008111381A1 (ja) 2007-03-13 2008-02-22 光ピックアップ装置及び情報記録再生装置
CN2008800078174A CN101632122B (zh) 2007-03-13 2008-02-22 光拾取装置及信息记录再生装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007063233 2007-03-13
JP2007-063233 2007-03-13

Publications (1)

Publication Number Publication Date
WO2008111381A1 true WO2008111381A1 (ja) 2008-09-18

Family

ID=39759323

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/053056 WO2008111381A1 (ja) 2007-03-13 2008-02-22 光ピックアップ装置及び情報記録再生装置

Country Status (3)

Country Link
JP (1) JPWO2008111381A1 (ja)
CN (2) CN101632122B (ja)
WO (1) WO2008111381A1 (ja)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0850731A (ja) * 1994-08-03 1996-02-20 Matsushita Electric Ind Co Ltd 光ディスク装置
JPH09320084A (ja) * 1996-05-28 1997-12-12 Sony Corp 円盤状光記録媒体の傾き測定装置
JPH10134359A (ja) * 1996-09-06 1998-05-22 Toshiba Corp ディスク再生装置
JP2003346369A (ja) * 2002-05-23 2003-12-05 Hitachi-Lg Data Storage Inc 光学式記録再生装置及びチルト制御方法
JP2004079146A (ja) * 2001-10-12 2004-03-11 Konica Minolta Holdings Inc 光ピックアップ装置、対物レンズ、回折光学素子、光学素子及び記録・再生装置
JP2005317168A (ja) * 2003-07-11 2005-11-10 Konica Minolta Opto Inc 光ピックアップ装置
JP2005339670A (ja) * 2004-05-27 2005-12-08 Sankyo Seiki Mfg Co Ltd 光ヘッド装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0850731A (ja) * 1994-08-03 1996-02-20 Matsushita Electric Ind Co Ltd 光ディスク装置
JPH09320084A (ja) * 1996-05-28 1997-12-12 Sony Corp 円盤状光記録媒体の傾き測定装置
JPH10134359A (ja) * 1996-09-06 1998-05-22 Toshiba Corp ディスク再生装置
JP2004079146A (ja) * 2001-10-12 2004-03-11 Konica Minolta Holdings Inc 光ピックアップ装置、対物レンズ、回折光学素子、光学素子及び記録・再生装置
JP2003346369A (ja) * 2002-05-23 2003-12-05 Hitachi-Lg Data Storage Inc 光学式記録再生装置及びチルト制御方法
JP2005317168A (ja) * 2003-07-11 2005-11-10 Konica Minolta Opto Inc 光ピックアップ装置
JP2005339670A (ja) * 2004-05-27 2005-12-08 Sankyo Seiki Mfg Co Ltd 光ヘッド装置

Also Published As

Publication number Publication date
CN101632122A (zh) 2010-01-20
CN102290070A (zh) 2011-12-21
CN101632122B (zh) 2012-05-30
JPWO2008111381A1 (ja) 2010-06-24

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