NL8702245A - Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. - Google Patents

Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. Download PDF

Info

Publication number
NL8702245A
NL8702245A NL8702245A NL8702245A NL8702245A NL 8702245 A NL8702245 A NL 8702245A NL 8702245 A NL8702245 A NL 8702245A NL 8702245 A NL8702245 A NL 8702245A NL 8702245 A NL8702245 A NL 8702245A
Authority
NL
Netherlands
Prior art keywords
radiation
sub
grating
scanning
strips
Prior art date
Application number
NL8702245A
Other languages
English (en)
Dutch (nl)
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
Priority to NL8702245A priority Critical patent/NL8702245A/nl
Priority to US07/135,787 priority patent/US4835378A/en
Priority to AT88201983T priority patent/ATE98802T1/de
Priority to DE3886322T priority patent/DE3886322T2/de
Priority to EP88201983A priority patent/EP0308022B1/de
Priority to JP63232739A priority patent/JPH0775080B2/ja
Priority to AU22399/88A priority patent/AU612300B2/en
Priority to CN88106873A priority patent/CN1032248A/zh
Priority to KR1019880012080A priority patent/KR100191876B1/ko
Publication of NL8702245A publication Critical patent/NL8702245A/nl
Priority to HK162295A priority patent/HK162295A/xx

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
    • G11B7/135—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
    • 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)
NL8702245A 1987-09-21 1987-09-21 Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak. NL8702245A (nl)

Priority Applications (10)

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.
US07/135,787 US4835378A (en) 1987-09-21 1987-12-21 Apparatus for optically scanning a radiation-reflective information plane
AT88201983T ATE98802T1 (de) 1987-09-21 1988-09-13 Vorrichtung zum abtasten einer strahlungsreflektierenden informationsflaeche mittels optischer strahlung.
DE3886322T DE3886322T2 (de) 1987-09-21 1988-09-13 Vorrichtung zum Abtasten einer strahlungsreflektierenden Informationsfläche mittels optischer Strahlung.
EP88201983A EP0308022B1 (de) 1987-09-21 1988-09-13 Vorrichtung zum Abtasten einer strahlungsreflektierenden Informationsfläche mittels optischer Strahlung
JP63232739A JPH0775080B2 (ja) 1987-09-21 1988-09-19 光学式走査装置
AU22399/88A AU612300B2 (en) 1987-09-21 1988-09-19 Apparatus for optically scanning a radiation-reflective information plane
CN88106873A CN1032248A (zh) 1987-09-21 1988-09-19 射线反射性信息平面的光扫描设备
KR1019880012080A KR100191876B1 (ko) 1987-09-21 1988-09-19 광학 주사 장치
HK162295A HK162295A (en) 1987-09-21 1995-10-19 Apparatus for optically scanning a radiation-reflective information plane

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8702245 1987-09-21
NL8702245A NL8702245A (nl) 1987-09-21 1987-09-21 Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.

Publications (1)

Publication Number Publication Date
NL8702245A true NL8702245A (nl) 1989-04-17

Family

ID=19850636

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8702245A NL8702245A (nl) 1987-09-21 1987-09-21 Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.

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
CA1324516C (en) * 1988-06-23 1993-11-23 Toshiya Nagahama Optical pickup apparatus
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.
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.
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
CN1806282A (zh) * 2003-06-11 2006-07-19 皇家飞利浦电子股份有限公司 读写光学存储载体的装置

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
EP0308022A1 (de) 1989-03-22
DE3886322T2 (de) 1994-06-16
KR100191876B1 (ko) 1999-06-15
DE3886322D1 (de) 1994-01-27
AU2239988A (en) 1989-03-23
JPH0775080B2 (ja) 1995-08-09
AU612300B2 (en) 1991-07-04
HK162295A (en) 1995-10-27
EP0308022B1 (de) 1993-12-15
JPH01106341A (ja) 1989-04-24
KR890005674A (ko) 1989-05-16
ATE98802T1 (de) 1994-01-15
US4835378A (en) 1989-05-30
CN1032248A (zh) 1989-04-05

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BV The patent application has lapsed