DE602004019838D1 - Optischer Kopf und optisches Plattenlaufwerk mit demselben - Google Patents

Optischer Kopf und optisches Plattenlaufwerk mit demselben

Info

Publication number
DE602004019838D1
DE602004019838D1 DE602004019838T DE602004019838T DE602004019838D1 DE 602004019838 D1 DE602004019838 D1 DE 602004019838D1 DE 602004019838 T DE602004019838 T DE 602004019838T DE 602004019838 T DE602004019838 T DE 602004019838T DE 602004019838 D1 DE602004019838 D1 DE 602004019838D1
Authority
DE
Germany
Prior art keywords
same
disk drive
optical
optical disk
optical head
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.)
Active
Application number
DE602004019838T
Other languages
English (en)
Inventor
Takayuki Nagata
Hironori Tomita
Hideki Nakata
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.)
Panasonic Corp
Original Assignee
Panasonic 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 Panasonic Corp filed Critical Panasonic Corp
Publication of DE602004019838D1 publication Critical patent/DE602004019838D1/de
Anticipated expiration legal-status Critical
Active 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
    • G11B7/12—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
    • G11B7/1362—Mirrors
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
    • 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
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE602004019838T 2003-05-26 2004-05-25 Optischer Kopf und optisches Plattenlaufwerk mit demselben Active DE602004019838D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003147242 2003-05-26

Publications (1)

Publication Number Publication Date
DE602004019838D1 true DE602004019838D1 (de) 2009-04-23

Family

ID=33128192

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004019838T Active DE602004019838D1 (de) 2003-05-26 2004-05-25 Optischer Kopf und optisches Plattenlaufwerk mit demselben

Country Status (5)

Country Link
US (1) US7209412B2 (de)
EP (1) EP1482493B1 (de)
JP (1) JP4439978B2 (de)
CN (1) CN1324584C (de)
DE (1) DE602004019838D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005332552A (ja) * 2004-04-22 2005-12-02 Sanyo Electric Co Ltd 光ピックアップ装置
JP2006031740A (ja) 2004-06-17 2006-02-02 Ricoh Co Ltd 情報記録媒体、記録方法、データ構造、情報記録装置、プログラム及び記録媒体
WO2006067723A1 (en) * 2004-12-22 2006-06-29 Arima Devices Corporation Optical scanning device with low building height
JP4275650B2 (ja) * 2005-05-13 2009-06-10 シャープ株式会社 光集積ユニットおよびそれを備えた光ピックアップ装置
CN100449620C (zh) * 2006-01-12 2009-01-07 索尼株式会社 光学拾取器和光学信息设备
JP2011150767A (ja) * 2010-01-25 2011-08-04 Hitachi Media Electoronics Co Ltd 光学ヘッド
TWI528064B (zh) * 2012-10-29 2016-04-01 鴻海精密工業股份有限公司 透鏡及使用該透鏡的光學模組

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2773469B2 (ja) * 1991-07-02 1998-07-09 松下電器産業株式会社 光ピックアップ
JPH05182227A (ja) * 1991-12-27 1993-07-23 Matsushita Electric Ind Co Ltd 光ピックアップ
JPH06162545A (ja) * 1992-11-18 1994-06-10 Matsushita Electric Ind Co Ltd 光学ヘッド
US5724337A (en) * 1993-10-29 1998-03-03 Tdk Corporation Optical pickup with a compact design
US5727111A (en) * 1995-06-19 1998-03-10 Sony Corporation Optical pick-up and light detecting cover therefor
JPH097192A (ja) * 1995-06-23 1997-01-10 Sony Corp 光ディスク装置
JPH10143934A (ja) * 1996-11-13 1998-05-29 Matsushita Electric Ind Co Ltd 光磁気ピックアップ装置
JPH11144295A (ja) * 1997-11-11 1999-05-28 Matsushita Electric Ind Co Ltd 光ヘッド
JP2001242308A (ja) * 2000-03-01 2001-09-07 Canon Electronics Inc 複合レンズ及びその製造方法
JP2003085813A (ja) * 2001-09-07 2003-03-20 Minebea Co Ltd 記録媒体の情報記録及び再生装置

Also Published As

Publication number Publication date
EP1482493A2 (de) 2004-12-01
CN1324584C (zh) 2007-07-04
JP4439978B2 (ja) 2010-03-24
US7209412B2 (en) 2007-04-24
JP2005011487A (ja) 2005-01-13
CN1573976A (zh) 2005-02-02
EP1482493A3 (de) 2006-07-05
EP1482493B1 (de) 2009-03-11
US20040240334A1 (en) 2004-12-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition