KR101296761B1 - 광 기록 매체용 픽업 - Google Patents

광 기록 매체용 픽업 Download PDF

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Publication number
KR101296761B1
KR101296761B1 KR1020060046091A KR20060046091A KR101296761B1 KR 101296761 B1 KR101296761 B1 KR 101296761B1 KR 1020060046091 A KR1020060046091 A KR 1020060046091A KR 20060046091 A KR20060046091 A KR 20060046091A KR 101296761 B1 KR101296761 B1 KR 101296761B1
Authority
KR
South Korea
Prior art keywords
recording medium
optical recording
light beam
land
data tracks
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
KR1020060046091A
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English (en)
Korean (ko)
Other versions
KR20060131622A (ko
Inventor
요아킴 니텔
하르트무트 디알 리치터
가엘 필라드
Original Assignee
톰슨 라이센싱
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 톰슨 라이센싱 filed Critical 톰슨 라이센싱
Publication of KR20060131622A publication Critical patent/KR20060131622A/ko
Application granted granted Critical
Publication of KR101296761B1 publication Critical patent/KR101296761B1/ko
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction
    • 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
    • G11B7/08—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
    • G11B7/0901—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 track following only
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
KR1020060046091A 2005-06-16 2006-05-23 광 기록 매체용 픽업 Expired - Fee Related KR101296761B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05012989.9 2005-06-16
EP05012989A EP1736975A1 (en) 2005-06-16 2005-06-16 Pickup for optical recording medium

Publications (2)

Publication Number Publication Date
KR20060131622A KR20060131622A (ko) 2006-12-20
KR101296761B1 true KR101296761B1 (ko) 2013-08-14

Family

ID=35276135

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060046091A Expired - Fee Related KR101296761B1 (ko) 2005-06-16 2006-05-23 광 기록 매체용 픽업

Country Status (8)

Country Link
US (1) US7541564B2 (enExample)
EP (2) EP1736975A1 (enExample)
JP (1) JP4996139B2 (enExample)
KR (1) KR101296761B1 (enExample)
CN (1) CN1881432B (enExample)
DE (1) DE602006008387D1 (enExample)
MY (1) MY143008A (enExample)
TW (1) TWI376689B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4433315B2 (ja) * 2006-01-12 2010-03-17 ソニー株式会社 光ピックアップ及び光情報装置
EP2009626A1 (en) * 2007-06-29 2008-12-31 Deutsche Thomson OHG Apparatus comprising a pickup unit providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100373982B1 (ko) * 2000-09-01 2003-02-26 삼성전기주식회사 다이나믹 제어 회절격자 및 정보기록 재생장치와 정보재생장치
KR20040085033A (ko) * 2003-03-28 2004-10-07 소니 가부시키가이샤 광 픽업장치 및 광 디스크장치

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113937A (ja) * 1986-10-31 1988-05-18 Kyocera Corp 光学的読み取り方法
JPH0793757A (ja) * 1993-09-22 1995-04-07 Sanyo Electric Co Ltd 光記録媒体及びその記録再生方法
US5717674A (en) * 1995-06-30 1998-02-10 Sanyo Electrics Co., Ltd. Three-beam generating diffraction grating, transmission type holographic optical element and optical pickup apparatus using the same
US20020075783A1 (en) * 1998-02-20 2002-06-20 Amir Alon Switchable liquid crystal diffractive element
JP3560805B2 (ja) * 1998-03-20 2004-09-02 パイオニア株式会社 光ピックアップ
US6687196B1 (en) * 1998-05-08 2004-02-03 Fuji Xerox Co., Lt.D. Method and apparatus for implementing high density recording on a recording medium and a method of manufacturing same
JP4822037B2 (ja) * 2001-08-24 2011-11-24 コニカミノルタホールディングス株式会社 光ピックアップ装置の対物レンズ及び光ピックアップ装置
JP2003099984A (ja) * 2001-09-26 2003-04-04 Toshiba Corp 光学的情報記録または再生装置および光学的情報記録媒体
AU2003260842A1 (en) * 2002-10-04 2004-04-23 Koninklijke Philips Electronics N.V. High track density super resolution mo-rom medium
JP2005339646A (ja) * 2004-05-26 2005-12-08 Mitsumi Electric Co Ltd 光ピックアップおよびそれに使用される回折格子

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100373982B1 (ko) * 2000-09-01 2003-02-26 삼성전기주식회사 다이나믹 제어 회절격자 및 정보기록 재생장치와 정보재생장치
KR20040085033A (ko) * 2003-03-28 2004-10-07 소니 가부시키가이샤 광 픽업장치 및 광 디스크장치

Also Published As

Publication number Publication date
EP1736977A1 (en) 2006-12-27
TW200701216A (en) 2007-01-01
CN1881432A (zh) 2006-12-20
KR20060131622A (ko) 2006-12-20
US7541564B2 (en) 2009-06-02
EP1736977B1 (en) 2009-08-12
DE602006008387D1 (de) 2009-09-24
MY143008A (en) 2011-02-14
TWI376689B (en) 2012-11-11
US20060285471A1 (en) 2006-12-21
JP4996139B2 (ja) 2012-08-08
EP1736975A1 (en) 2006-12-27
CN1881432B (zh) 2012-09-05
JP2006351169A (ja) 2006-12-28

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