KR890005674A - 광학 주사장치 - Google Patents

광학 주사장치 Download PDF

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Publication number
KR890005674A
KR890005674A KR1019880012080A KR880012080A KR890005674A KR 890005674 A KR890005674 A KR 890005674A KR 1019880012080 A KR1019880012080 A KR 1019880012080A KR 880012080 A KR880012080 A KR 880012080A KR 890005674 A KR890005674 A KR 890005674A
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KR
South Korea
Prior art keywords
grating
radiation
auxiliary
detector pair
scanning
Prior art date
Application number
KR1019880012080A
Other languages
English (en)
Other versions
KR100191876B1 (ko
Inventor
쿠프스 피터
Original Assignee
이반 밀러 레르너
엔. 브이. 필립스 글로아이람펜파브리켄
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.)
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Publication date
Application filed by 이반 밀러 레르너, 엔. 브이. 필립스 글로아이람펜파브리켄 filed Critical 이반 밀러 레르너
Publication of KR890005674A publication Critical patent/KR890005674A/ko
Application granted granted Critical
Publication of KR100191876B1 publication Critical patent/KR100191876B1/ko

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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)
  • Length Measuring Devices By Optical Means (AREA)
  • Semiconductor Lasers (AREA)

Abstract

내용 없음

Description

광학 주사장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 회절 격자를 가진 판독장치의 실시예를 도시.
제2도는 회절 격자 및 결합된 검출 시스템의 제1실시예의 투시도.
제3a 및 제3b도는 포커싱 에러의 발생으로 검출기를 통한 복사점의 변이를 도시.

Claims (4)

  1. 주사빔을 공급하는 다이오드 레이저, 정보면에 주사점을 형성하기 위해 주사빔을 포커싱하고 복합방사선 감지 검출 시스템을 위해 주사점을 재 영상화하기 위한 대물 시스템 및 정보면에 의해 방사선 감지 검출 시스템에 반사된 방사선 빔을 편향시키고 대응한 다수의 복사점을 대응하는 다수의 검출기쌍 복합 검출 시스템에 형성하는 다수의 보조빔내로 상기 빔을 스프릿하기 위해 다이오드 레이저와 대물 시스템 사이의 방사선 경로에 배치된 복합 회전 소자를 구비하고, 방사선 반사 정보면을 광학적으로 주사하기 위한 장치에 있어서, 각각의 검출기쌍에 대해 두 검출기 사이의 분리 스트립은 주사빔이 최적 방법으로 정보면에 포커스되면 관련 검출기쌍에 형성된 복사점의 세기 분배의 중심에 의해 정해진 위치를 가진 다이오드 레이저의 방사선 방출 표면의 중심을 접속하는 라인에 대해 예각으로 연장하는 것을 특징으로 하는 광학 주사장치.
  2. 제1항에 있어서, 상기 보조 격자는 가변 격자 간격을 가지며 격자 스트립은 구부러진 것을 특징으로 하는 광학 주사장치.
  3. 회절 소자는 한 보조 격자의 격자 스트립이 다른 보조 격자의 방향과 동일한 방향을 가지며 보조 격자의 격자 간격이 서로다른 두개의 보조 격자로 구성되고, 검축기쌍의 보조 격자들 사이에 접속 라인에 평행한 방향으로 나란히 놓여 있는 제1 또는 2항에 청구된 바와같은 장치에 있어서, 검출기쌍의 분리 스트립은 상기 접속 라인에 대해 반대 각도로 연장하는 것을 특징으로 하는 광학 주사장치.
  4. 회절 소자는 동일한 격자 간격을 갖는 두개의 보조 격자로 구성되며, 반면에 제1보조 격자의 격자 스트립은 제1각도로 연장하며, 제2보조 격자의 격자 스트립은 제1각도와는 반대이며 두개의 보조 격자의 분리선과 동일한 제2각도로 연장하고, 검출기쌍은 상기 분리선이 방향에 수직방향으로 놓여 있는 제1 또는 2항에 청구된 바와같은 장치에 있어서, 검출기쌍의 분리 스트립은 상기 접속선에 대한 각도와는 반대로 크게 동일하게 연장하는 것을 특징으로 하는 광학 주사장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880012080A 1987-09-21 1988-09-19 광학 주사 장치 KR100191876B1 (ko)

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.
NL8702245 1987-09-21

Publications (2)

Publication Number Publication Date
KR890005674A true KR890005674A (ko) 1989-05-16
KR100191876B1 KR100191876B1 (ko) 1999-06-15

Family

ID=19850636

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880012080A KR100191876B1 (ko) 1987-09-21 1988-09-19 광학 주사 장치

Country Status (10)

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

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
EP0612064B1 (en) * 1988-06-23 1997-10-29 Sharp Kabushiki Kaisha An optical pickup apparatus
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
EP1636793A1 (en) * 2003-06-11 2006-03-22 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
NL8702245A (nl) 1989-04-17
CN1032248A (zh) 1989-04-05
KR100191876B1 (ko) 1999-06-15
AU2239988A (en) 1989-03-23
JPH01106341A (ja) 1989-04-24
AU612300B2 (en) 1991-07-04
HK162295A (en) 1995-10-27
US4835378A (en) 1989-05-30
DE3886322T2 (de) 1994-06-16
EP0308022B1 (en) 1993-12-15
ATE98802T1 (de) 1994-01-15
JPH0775080B2 (ja) 1995-08-09
EP0308022A1 (en) 1989-03-22

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