ATE98802T1 - Vorrichtung zum abtasten einer strahlungsreflektierenden informationsflaeche mittels optischer strahlung. - Google Patents

Vorrichtung zum abtasten einer strahlungsreflektierenden informationsflaeche mittels optischer strahlung.

Info

Publication number
ATE98802T1
ATE98802T1 AT88201983T AT88201983T ATE98802T1 AT E98802 T1 ATE98802 T1 AT E98802T1 AT 88201983 T AT88201983 T AT 88201983T AT 88201983 T AT88201983 T AT 88201983T AT E98802 T1 ATE98802 T1 AT E98802T1
Authority
AT
Austria
Prior art keywords
radiation
scanning
information plane
focussed
plane
Prior art date
Application number
AT88201983T
Other languages
English (en)
Inventor
Peter Coops
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of ATE98802T1 publication Critical patent/ATE98802T1/de

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
    • G11B7/1381—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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/16—Beam splitting or combining systems used as aids for focusing
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
AT88201983T 1987-09-21 1988-09-13 Vorrichtung zum abtasten einer strahlungsreflektierenden informationsflaeche mittels optischer strahlung. ATE98802T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8702245A NL8702245A (nl) 1987-09-21 1987-09-21 Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
EP88201983A EP0308022B1 (de) 1987-09-21 1988-09-13 Vorrichtung zum Abtasten einer strahlungsreflektierenden Informationsfläche mittels optischer Strahlung

Publications (1)

Publication Number Publication Date
ATE98802T1 true ATE98802T1 (de) 1994-01-15

Family

ID=19850636

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88201983T ATE98802T1 (de) 1987-09-21 1988-09-13 Vorrichtung zum abtasten einer strahlungsreflektierenden informationsflaeche mittels optischer strahlung.

Country Status (10)

Country Link
US (1) US4835378A (de)
EP (1) EP0308022B1 (de)
JP (1) JPH0775080B2 (de)
KR (1) KR100191876B1 (de)
CN (1) CN1032248A (de)
AT (1) ATE98802T1 (de)
AU (1) AU612300B2 (de)
DE (1) DE3886322T2 (de)
HK (1) HK162295A (de)
NL (1) NL8702245A (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPH0770065B2 (ja) * 1988-04-20 1995-07-31 シャープ株式会社 光ピックアップ装置
DE68919922T2 (de) * 1988-06-23 1995-06-22 Sharp Kk Optische Abtastvorrichtung.
NL8803055A (nl) * 1988-12-13 1990-07-02 Philips Nv Optische aftastinrichting, spiegelobjektief geschikt voor toepassing daarin en optisch inschrijf- en/of uitleesapparaat voorzien van deze aftastinrichting.
NL8803048A (nl) * 1988-12-13 1990-07-02 Philips Nv Optische aftastinrichting, spiegelobjektief geschikt voor toepassing daarin en optische inschrijf- en/of uitleesapparaat voorzien van de aftastinrichting.
US5161139A (en) * 1989-01-06 1992-11-03 Kabushiki Kaisha Toshiba Focusing error detecting apparatus
JPH0785310B2 (ja) * 1989-04-07 1995-09-13 シャープ株式会社 信号処理回路内蔵型受光素子
NL9002007A (nl) * 1990-09-12 1992-04-01 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPH04137232A (ja) * 1990-09-27 1992-05-12 Sharp Corp 光ピックアップ装置
JPH04364231A (ja) * 1991-01-07 1992-12-16 Toshiba Corp 光学ヘッド装置
KR940020325A (ko) * 1993-02-08 1994-09-15 이헌조 광픽업장치
US5742572A (en) * 1993-06-21 1998-04-21 Fujitsu Limited Optical information recording/reproducing apparatus which detects focal error
JPH09198706A (ja) * 1996-01-22 1997-07-31 Fujitsu Ltd 光ディスク装置用光ピックアップのホログラム光学系
KR19980025759A (ko) * 1996-10-04 1998-07-15 김광호 광픽업장치
EP1116982A3 (de) * 2000-01-11 2004-06-09 Carl Zeiss Strahlenteiler
US6574066B1 (en) * 2000-02-17 2003-06-03 Imation Corp. Time-based optical servo system and method
JP2002163831A (ja) * 2000-11-27 2002-06-07 Sharp Corp 半導体レーザ装置および光ピックアップ装置
US20060198277A1 (en) * 2003-06-11 2006-09-07 Koninklijke Philips Electronics N.V. Apparatus for reading/writing an optical storage carrier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8202058A (nl) * 1982-05-19 1983-12-16 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
US4733065A (en) * 1984-06-27 1988-03-22 Canon Kabushiki Kaisha Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom
NL8403034A (nl) * 1984-10-05 1986-05-01 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
DE3536497A1 (de) * 1984-10-16 1986-04-17 Mitsubishi Denki K.K., Tokio/Tokyo Vorrichtung zur erfassung von fokussierungsfehlern in einer kopfanordnung fuer optische scheiben
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPS6297144A (ja) * 1985-10-24 1987-05-06 Mitsubishi Electric Corp 光ピツクアツプ
JPS62208440A (ja) * 1986-03-07 1987-09-12 Mitsubishi Electric Corp 光ピツクアツプ
JP2634797B2 (ja) * 1986-01-24 1997-07-30 日本電気株式会社 光ヘッド装置
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.

Also Published As

Publication number Publication date
DE3886322D1 (de) 1994-01-27
DE3886322T2 (de) 1994-06-16
CN1032248A (zh) 1989-04-05
HK162295A (en) 1995-10-27
JPH01106341A (ja) 1989-04-24
EP0308022A1 (de) 1989-03-22
JPH0775080B2 (ja) 1995-08-09
KR890005674A (ko) 1989-05-16
NL8702245A (nl) 1989-04-17
US4835378A (en) 1989-05-30
KR100191876B1 (ko) 1999-06-15
AU2239988A (en) 1989-03-23
AU612300B2 (en) 1991-07-04
EP0308022B1 (de) 1993-12-15

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Legal Events

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