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DE69842255D1 - Optisches abtastgerät - Google Patents

Optisches abtastgerät

Info

Publication number
DE69842255D1
DE69842255D1 DE69842255T DE69842255T DE69842255D1 DE 69842255 D1 DE69842255 D1 DE 69842255D1 DE 69842255 T DE69842255 T DE 69842255T DE 69842255 T DE69842255 T DE 69842255T DE 69842255 D1 DE69842255 D1 DE 69842255D1
Authority
DE
Germany
Prior art keywords
optical scanner
scanner
optical
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69842255T
Other languages
English (en)
Inventor
Keiji Sakai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp 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
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69842255D1 publication Critical patent/DE69842255D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/08—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
    • G11B7/0916—Foucault or knife-edge methods
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/133—Shape of individual detector elements
    • 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)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE69842255T 1997-02-07 1998-02-06 Optisches abtastgerät Expired - Lifetime DE69842255D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP02420397A JP3889104B2 (ja) 1997-02-07 1997-02-07 光ピックアップ装置
PCT/JP1998/000490 WO1998035346A1 (en) 1997-02-07 1998-02-06 Optical pickup device

Publications (1)

Publication Number Publication Date
DE69842255D1 true DE69842255D1 (de) 2011-06-16

Family

ID=12131768

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69842255T Expired - Lifetime DE69842255D1 (de) 1997-02-07 1998-02-06 Optisches abtastgerät

Country Status (6)

Country Link
US (1) US6339562B1 (de)
EP (1) EP0959463B1 (de)
JP (1) JP3889104B2 (de)
KR (1) KR100336958B1 (de)
DE (1) DE69842255D1 (de)
WO (1) WO1998035346A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3435067B2 (ja) 1998-08-06 2003-08-11 シャープ株式会社 光ピックアップ装置
JP2000182253A (ja) * 1998-12-15 2000-06-30 Sony Corp 情報記録再生装置
JP3549047B2 (ja) * 2000-06-08 2004-08-04 シャープ株式会社 光ピックアップ装置及びその収差補正方法並びに収差検出装置
JP3755731B2 (ja) * 2000-06-14 2006-03-15 Ｔｄｋ株式会社 光記録再生装置
JP2002157756A (ja) * 2000-11-15 2002-05-31 Sharp Corp 焦点位置ずれ検出方法および光ピックアップ装置
JP3827940B2 (ja) * 2000-11-15 2006-09-27 シャープ株式会社 収差検出装置および光ピックアップ装置
JP4242108B2 (ja) * 2001-06-04 2009-03-18 パナソニック株式会社 光ピックアップヘッドおよび情報記録再生装置
US7076100B2 (en) * 2002-09-05 2006-07-11 Hi-Touch Imaging Technologies Co., Ltd. Method and apprartus thereof for detecting a hidden image in a hologram
EP1939870B1 (de) * 2003-01-29 2010-03-31 Ricoh Company, Ltd. Optische Lesekopfvorrichtung und optisches Plattengerät
JP4156484B2 (ja) * 2003-09-30 2008-09-24 シャープ株式会社 光ピックアップ
US8189434B2 (en) 2004-04-30 2012-05-29 Sharp Kabushiki Kaisha Optical pickup unit and optical pickup device having same and information writing/reading device having same
JP4118869B2 (ja) * 2004-11-12 2008-07-16 シャープ株式会社 光ピックアップ装置
ATE395694T1 (de) * 2004-12-20 2008-05-15 Koninkl Philips Electronics Nv Vielpunktdetektoranordnung für mehrschichtige aufzeichnungsträger
US8184519B2 (en) * 2008-01-25 2012-05-22 Sanyo Electric Co., Ltd. Optical pickup apparatus
JP2009223937A (ja) * 2008-03-14 2009-10-01 Ricoh Co Ltd 光ピックアップおよびこれを用いる光情報処理装置
JP5255961B2 (ja) 2008-09-05 2013-08-07 株式会社日立メディアエレクトロニクス 光ピックアップ装置および光ディスク装置
JP5386198B2 (ja) * 2009-03-09 2014-01-15 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

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609019A (ja) 1983-06-29 1985-01-18 富士電機株式会社 屋外用真空しや断器
JPS609019U (ja) * 1983-06-29 1985-01-22 株式会社リコー 光情報検出装置
JPH0294119A (ja) 1988-09-30 1990-04-04 Nippon Columbia Co Ltd 光ピックアップ
JP2672620B2 (ja) * 1989-01-12 1997-11-05 松下電器産業株式会社 光ヘッド装置及びその組立方法
JPH083910B2 (ja) * 1989-01-13 1996-01-17 シャープ株式会社 光ピックアップ装置
KR940001999B1 (ko) 1989-06-06 1994-03-12 샤프 가부시끼가이샤 광 픽업장치
JP2786496B2 (ja) 1990-01-12 1998-08-13 松下電器産業株式会社 光ヘッド装置
JP2975395B2 (ja) 1990-05-15 1999-11-10 シャープ株式会社 光ピックアップ装置
TW218427B (de) 1991-06-04 1994-01-01 Ibm
JP3107892B2 (ja) * 1992-03-04 2000-11-13 シャープ株式会社 光学ヘッド
DE69319673T2 (de) 1992-08-12 1999-02-25 Philips Electronics N.V., Eindhoven Einrichtung zur optischen Abtastung einer Oberfläche
JP3209639B2 (ja) 1994-06-21 2001-09-17 松下電器産業株式会社 半導体装置の製造方法
JP3372413B2 (ja) 1995-12-04 2003-02-04 シャープ株式会社 光ピックアップ装置及び光記録再生装置
WO1997034297A1 (fr) * 1996-03-11 1997-09-18 Seiko Epson Corporation Tete de lecture optique et appareil d'enregistrement optique

Also Published As

Publication number Publication date
EP0959463B1 (de) 2011-05-04
WO1998035346A1 (en) 1998-08-13
EP0959463A4 (de) 2008-04-02
US6339562B1 (en) 2002-01-15
JP3889104B2 (ja) 2007-03-07
KR20000070841A (ko) 2000-11-25
JPH10222867A (ja) 1998-08-21
KR100336958B1 (ko) 2002-05-15
EP0959463A1 (de) 1999-11-24

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