CN100449621C - 光学头装置及光盘装置 - Google Patents

光学头装置及光盘装置 Download PDF

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Publication number
CN100449621C
CN100449621C CNB028273559A CN02827355A CN100449621C CN 100449621 C CN100449621 C CN 100449621C CN B028273559 A CNB028273559 A CN B028273559A CN 02827355 A CN02827355 A CN 02827355A CN 100449621 C CN100449621 C CN 100449621C
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CN
China
Prior art keywords
light
mentioned
optical
diffraction
wavelength
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 - Fee Related
Application number
CNB028273559A
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English (en)
Chinese (zh)
Other versions
CN1615512A (zh
Inventor
深泽宣雄
铃木润一
丰田清
田中彻
石井聪
久保毅
齐藤政宏
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of CN1615512A publication Critical patent/CN1615512A/zh
Application granted granted Critical
Publication of CN100449621C publication Critical patent/CN100449621C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • G11B7/08—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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/0909—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 by astigmatic 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
    • G11B7/0908—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
CNB028273559A 2001-11-22 2002-11-19 光学头装置及光盘装置 Expired - Fee Related CN100449621C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP358244/2001 2001-11-22
JP2001358244 2001-11-22
JP226764/2002 2002-08-02
JP2002226764A JP2003223738A (ja) 2001-11-22 2002-08-02 光ピックアップ装置及び光ディスク装置並びに光学装置及び複合光学素子

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100719000A Division CN100472623C (zh) 2001-11-22 2002-11-19 光学头装置及光盘装置

Publications (2)

Publication Number Publication Date
CN1615512A CN1615512A (zh) 2005-05-11
CN100449621C true CN100449621C (zh) 2009-01-07

Family

ID=26624668

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB028273559A Expired - Fee Related CN100449621C (zh) 2001-11-22 2002-11-19 光学头装置及光盘装置

Country Status (6)

Country Link
US (1) US7345982B2 (enExample)
JP (1) JP2003223738A (enExample)
KR (1) KR20040066834A (enExample)
CN (1) CN100449621C (enExample)
TW (1) TWI223248B (enExample)
WO (1) WO2003044785A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3870196B2 (ja) * 2003-03-27 2007-01-17 キヤノン株式会社 光空間伝送装置
JP4071141B2 (ja) * 2003-03-31 2008-04-02 シャープ株式会社 半導体レーザ装置および光ピックアップ装置
TWI329869B (en) * 2004-11-05 2010-09-01 Hon Hai Prec Ind Co Ltd Semiconductor laser assembly and optical pickup device using the same
JP4954871B2 (ja) * 2005-04-27 2012-06-20 パナソニック株式会社 光ヘッド装置および光情報処理装置
JP5174913B2 (ja) * 2008-08-11 2013-04-03 三菱電機株式会社 光ヘッド装置及び光ディスク装置
JP5174768B2 (ja) * 2009-09-11 2013-04-03 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
JP5509137B2 (ja) * 2010-05-14 2014-06-04 シャープ株式会社 光ピックアップ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1214503A (zh) * 1997-08-26 1999-04-21 松下电器产业株式会社 光学头
JP2001216677A (ja) * 2000-01-28 2001-08-10 Hitachi Ltd 光ピックアップおよびそれを用いた情報再生装置または情報記録再生装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4231126B2 (ja) * 1997-08-26 2009-02-25 パナソニック株式会社 光学ヘッド
US6072579A (en) * 1998-08-27 2000-06-06 Ricoh Company, Ltd. Optical pickup apparatus having improved holographic optical element and photodetector
JP3333818B2 (ja) * 1999-10-01 2002-10-15 アルプス電気株式会社 複合光学ユニット
JP3662519B2 (ja) * 2000-07-13 2005-06-22 シャープ株式会社 光ピックアップ
JP3844290B2 (ja) 2001-01-24 2006-11-08 シャープ株式会社 ホログラムレーザおよび光ピックアップ
JP2002311221A (ja) 2001-04-18 2002-10-23 Alps Electric Co Ltd 光学部材及びこれを用いた光学装置
JP3817438B2 (ja) 2001-04-18 2006-09-06 アルプス電気株式会社 光学部材およびこれを用いた光学装置
KR100457944B1 (ko) * 2002-03-22 2004-11-18 삼성전기주식회사 광 픽업장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1214503A (zh) * 1997-08-26 1999-04-21 松下电器产业株式会社 光学头
JP2001216677A (ja) * 2000-01-28 2001-08-10 Hitachi Ltd 光ピックアップおよびそれを用いた情報再生装置または情報記録再生装置

Also Published As

Publication number Publication date
WO2003044785A1 (en) 2003-05-30
US7345982B2 (en) 2008-03-18
TW200304133A (en) 2003-09-16
TWI223248B (en) 2004-11-01
CN1615512A (zh) 2005-05-11
KR20040066834A (ko) 2004-07-27
JP2003223738A (ja) 2003-08-08
US20050162995A1 (en) 2005-07-28

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090107

Termination date: 20091221