NL8802689A - Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak. - Google Patents

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

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Publication number
NL8802689A
NL8802689A NL8802689A NL8802689A NL8802689A NL 8802689 A NL8802689 A NL 8802689A NL 8802689 A NL8802689 A NL 8802689A NL 8802689 A NL8802689 A NL 8802689A NL 8802689 A NL8802689 A NL 8802689A
Authority
NL
Netherlands
Prior art keywords
grating
sub
grids
radiation
strips
Prior art date
Application number
NL8802689A
Other languages
English (en)
Dutch (nl)
Inventor
Peter Coops
Adrianus J Duijvestijn
Original Assignee
Koninkl Philips Electronics 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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to NL8802689A priority Critical patent/NL8802689A/nl
Priority to US07/323,466 priority patent/US4908506A/en
Priority to EP89202734A priority patent/EP0369510A1/en
Priority to CN89108354A priority patent/CN1018302B/zh
Priority to KR1019890015662A priority patent/KR100238737B1/ko
Priority to JP1285111A priority patent/JPH02172025A/ja
Publication of NL8802689A publication Critical patent/NL8802689A/nl

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
    • 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
    • G11B7/0916—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
NL8802689A 1988-11-03 1988-11-03 Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak. NL8802689A (nl)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL8802689A NL8802689A (nl) 1988-11-03 1988-11-03 Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak.
US07/323,466 US4908506A (en) 1988-11-03 1989-03-14 Apparatus for optically scanning a radiation-reflecting information plane
EP89202734A EP0369510A1 (en) 1988-11-03 1989-10-30 Apparatus for optically scanning a radiation-reflecting information plane
CN89108354A CN1018302B (zh) 1988-11-03 1989-10-31 对反光式信息面进行光扫描的装置
KR1019890015662A KR100238737B1 (ko) 1988-11-03 1989-10-31 방사-반사정보면을 광학적으로 주사하는 장치
JP1285111A JPH02172025A (ja) 1988-11-03 1989-11-02 光学式走査装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802689A NL8802689A (nl) 1988-11-03 1988-11-03 Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak.
NL8802689 1988-11-03

Publications (1)

Publication Number Publication Date
NL8802689A true NL8802689A (nl) 1990-06-01

Family

ID=19853152

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8802689A NL8802689A (nl) 1988-11-03 1988-11-03 Inrichting voor het met optische straling aftasten van een stralingsreflekterend oppervlak.

Country Status (6)

Country Link
US (1) US4908506A (ja)
EP (1) EP0369510A1 (ja)
JP (1) JPH02172025A (ja)
KR (1) KR100238737B1 (ja)
CN (1) CN1018302B (ja)
NL (1) NL8802689A (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2591302B2 (ja) * 1990-09-26 1997-03-19 松下電器産業株式会社 フォーカスエラー検出装置
DE4330794C2 (de) * 1992-09-10 1999-12-23 Toshiba Kawasaki Kk Optische Kopfvorrichtung zur Verwendung in einer optischen Aufzeichnungs- und Schreib/Lesevorrichtung
US5742572A (en) * 1993-06-21 1998-04-21 Fujitsu Limited Optical information recording/reproducing apparatus which detects focal error
US5673144A (en) * 1994-09-14 1997-09-30 International Business Machines, Corporation Oblique viewing microscope system
IL115864A (en) * 1995-11-02 1999-05-09 Orbotech Ltd Method and apparatus for delivering laser energy to an object
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
KR100483599B1 (ko) 1997-06-30 2005-09-14 마츠시타 덴끼 산교 가부시키가이샤 광학헤드및정보기록재생장치
JP2002525781A (ja) * 1998-09-21 2002-08-13 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 少なくとも２つの情報層を有する光記録担体を走査する装置
JP2000182253A (ja) * 1998-12-15 2000-06-30 Sony Corp 情報記録再生装置
JP2001043544A (ja) * 1999-07-28 2001-02-16 Nec Corp 光ヘッド装置
KR100618990B1 (ko) * 2000-03-23 2006-09-04 삼성전자주식회사 광픽업용 시크방향 검출 신호 생성장치
KR100750093B1 (ko) 2000-10-12 2007-08-21 삼성전자주식회사 광픽업용 디포커스 에러신호 검출장치 및 방법 및 이를채용한 시크 방향 검출장치 및 방법
JP2002288856A (ja) * 2001-03-27 2002-10-04 Sharp Corp 光ピックアップ
JP3930784B2 (ja) * 2001-09-17 2007-06-13 シャープ株式会社 傾斜量検出装置
CN111189417B (zh) * 2020-01-15 2020-11-27 浙江大学 基于高频图案干涉的二进制光栅图像投影反光抑制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5696203A (en) * 1979-12-27 1981-08-04 Fujitsu Ltd Detection device for optical position
NL8202058A (nl) * 1982-05-19 1983-12-16 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
JPS60131648A (ja) * 1983-12-19 1985-07-13 Toshiba Corp 光学ヘツド
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
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
DE3679648D1 (de) * 1985-12-10 1991-07-11 Nec Corp Optischer kopf mit einem beugungsgitter zum richten von zwei oder mehreren gebeugten lichtstrahlen auf optische detektoren.
JPS6356819A (ja) * 1986-08-27 1988-03-11 Nec Corp 光ヘツド装置
JPS63148429A (ja) * 1986-12-12 1988-06-21 Nec Corp 光ヘツド装置
NL8701749A (nl) * 1987-07-24 1989-02-16 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.

Also Published As

Publication number Publication date
JPH02172025A (ja) 1990-07-03
US4908506A (en) 1990-03-13
KR100238737B1 (ko) 2000-02-01
EP0369510A1 (en) 1990-05-23
KR900008458A (ko) 1990-06-04
CN1018302B (zh) 1992-09-16
CN1042440A (zh) 1990-05-23

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BV The patent application has lapsed