DE69317731D1 - Optischer Abtastkopf - Google Patents

Optischer Abtastkopf

Info

Publication number
DE69317731D1
DE69317731D1 DE69317731T DE69317731T DE69317731D1 DE 69317731 D1 DE69317731 D1 DE 69317731D1 DE 69317731 T DE69317731 T DE 69317731T DE 69317731 T DE69317731 T DE 69317731T DE 69317731 D1 DE69317731 D1 DE 69317731D1
Authority
DE
Germany
Prior art keywords
optical scanning
scanning head
head
optical
scanning
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
DE69317731T
Other languages
English (en)
Other versions
DE69317731T2 (de
Inventor
Makoto Kato
Hiroaki Yamamoto
Seij Nishino
Shin-Ichi Kadowaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69317731D1 publication Critical patent/DE69317731D1/de
Publication of DE69317731T2 publication Critical patent/DE69317731T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/1367—Stepped phase plates

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69317731T 1992-11-12 1993-08-26 Optischer Abtastkopf Expired - Fee Related DE69317731T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30191792A JP3238497B2 (ja) 1992-11-12 1992-11-12 光ピックアップヘッド装置

Publications (2)

Publication Number Publication Date
DE69317731D1 true DE69317731D1 (de) 1998-05-07
DE69317731T2 DE69317731T2 (de) 1998-07-30

Family

ID=17902675

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69317731T Expired - Fee Related DE69317731T2 (de) 1992-11-12 1993-08-26 Optischer Abtastkopf

Country Status (5)

Country Link
US (1) US5519685A (de)
EP (1) EP0597202B1 (de)
JP (1) JP3238497B2 (de)
KR (1) KR0130041B1 (de)
DE (1) DE69317731T2 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640380A (en) * 1994-08-04 1997-06-17 Matsushita Electric Industrial Co., Ltd. Optical head with a translucent plate to split a light beam
KR100214046B1 (ko) * 1995-03-27 1999-08-02 마츠시타 덴끼 산교 가부시키가이샤 초해상 광헤드장치
JP3276132B2 (ja) * 1995-05-11 2002-04-22 キヤノン株式会社 光ヘッド
US5646928A (en) * 1995-06-22 1997-07-08 The Regents Of The University Of California Free-space integrated micro-pickup head for optical data storage and a micro-optical bench
JP3549301B2 (ja) * 1995-09-08 2004-08-04 三菱電機株式会社 光ヘッドのトラッキング誤差検出装置
JPH0991761A (ja) * 1995-09-28 1997-04-04 Sony Corp 光記録媒体
JP3645020B2 (ja) * 1995-12-12 2005-05-11 富士通株式会社 光情報検出装置
JPH11110811A (ja) * 1997-10-06 1999-04-23 Fujitsu Ltd 光学的情報記憶装置
JPH11110810A (ja) * 1997-10-06 1999-04-23 Fujitsu Ltd 光学的情報記憶装置
US6567368B1 (en) 1998-06-13 2003-05-20 Lg Electronics Inc. Optical recording medium and method and apparatus of reproducing the same
KR100326872B1 (ko) * 1998-07-04 2002-08-21 엘지전자주식회사 광픽업장치
KR20000009844A (ko) 1998-07-29 2000-02-15 사까이 히로시 광픽업
KR100580549B1 (ko) * 1998-08-18 2006-10-04 엘지전자 주식회사 다층광디스크장치
KR100551115B1 (ko) * 1998-10-08 2006-05-22 엘지전자 주식회사 광픽업장치
US6426933B1 (en) * 1998-10-08 2002-07-30 Lg Electronics Inc. Optical pickup apparatus having polarizing phase plates
KR100640309B1 (ko) * 1999-02-02 2006-10-31 엘지전자 주식회사 광픽업 장치
JP3662751B2 (ja) * 1998-11-18 2005-06-22 日本電気株式会社 光ヘッド装置
KR100322599B1 (ko) * 1998-12-23 2002-03-08 윤종용 광픽업장치
KR100289726B1 (ko) * 1999-04-22 2001-05-15 윤종용 신호간 간섭 및/또는 크로스토크 감소 장치 및 방법
US6373808B1 (en) * 1999-10-08 2002-04-16 Lg Electronics Inc. Optical pick-up apparatus capable of eliminating a cross-talk component from adjacent tracks
JP4035933B2 (ja) * 1999-11-30 2008-01-23 ソニー株式会社 光ピックアップおよび記録再生装置
US7154837B2 (en) * 2000-05-31 2006-12-26 Matsushita Electric Industrial Co., Ltd. Optical pickup and optical information recording/reproducing device
JP3979285B2 (ja) * 2002-12-17 2007-09-19 株式会社日立製作所 情報処理システム
KR20050109998A (ko) * 2003-03-17 2005-11-22 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
DE102005013116B4 (de) * 2005-03-18 2022-05-25 Leica Microsystems Cms Gmbh Phasenfilter und ein Mikroskop
KR20070120952A (ko) * 2005-04-20 2007-12-26 아사히 가라스 가부시키가이샤 위상판 및 광헤드 장치
US20090219795A1 (en) * 2005-10-17 2009-09-03 Yutaka Yamanaka Optical Head and Optical Disk Drive
CN101421786B (zh) * 2006-03-16 2011-04-20 旭硝子株式会社 光头装置
JP2007265581A (ja) * 2006-03-30 2007-10-11 Fujinon Sano Kk 回折素子
JP5099014B2 (ja) * 2006-11-16 2012-12-12 日本電気株式会社 光ヘッド装置および光学式情報記録再生装置
JP2009146528A (ja) * 2007-12-17 2009-07-02 Panasonic Corp 光ピックアップ装置、及び光ディスク装置
CN102122079A (zh) * 2011-03-23 2011-07-13 浙江大学 受激发射损耗显微镜中抑制光斑的生成方法和装置
GB201413500D0 (en) * 2014-07-30 2014-09-10 Univ St Andrews Airy beam light sheet

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445333A1 (de) * 1973-10-01 1975-04-10 Philips Nv Optoelektronisches system zur bestimmung einer abweichung zwischen der istlage und der sollage einer ebene in einem optischen abbildungssystem
NL7313454A (nl) * 1973-10-01 1975-04-03 Philips Nv Opto-elektronisch stelsel voor het bepalen van een king tussen de werkelijke positie van een stralings kterend vlak in een optisch afbeeldingsstelsel en d ste positie van dit vlak.
JPS5758248A (en) * 1980-09-24 1982-04-07 Nec Corp Readout method of high density light beam
DE3882872T2 (de) * 1987-10-05 1993-11-11 Matsushita Electric Ind Co Ltd Optische Lesekopf.
JPH01269240A (ja) * 1988-04-20 1989-10-26 Csk Corp 光記録装置
JPH02101641A (ja) * 1988-10-07 1990-04-13 Nec Corp 光ヘッド装置
US5062098A (en) * 1988-10-19 1991-10-29 Matsushita Electric Industrial Co., Ltd. Optical pick-up device having holographic element
JPH02246030A (ja) * 1989-03-17 1990-10-01 Ricoh Co Ltd 光情報記録再生装置
JP3064347B2 (ja) * 1990-07-30 2000-07-12 株式会社日立製作所 レーザ光走査装置
JPH03157843A (ja) * 1989-11-16 1991-07-05 Sony Corp 光学ピックアップ装置
JP3044667B2 (ja) * 1990-06-19 2000-05-22 アルプス電気株式会社 光学式読取り装置

Also Published As

Publication number Publication date
KR940012281A (ko) 1994-06-23
DE69317731T2 (de) 1998-07-30
EP0597202A1 (de) 1994-05-18
JP3238497B2 (ja) 2001-12-17
KR0130041B1 (ko) 1998-04-18
JPH06150363A (ja) 1994-05-31
US5519685A (en) 1996-05-21
EP0597202B1 (de) 1998-04-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee