DE69327369T2 - Optisches abtastgerät für eine magneto-optische speicherung - Google Patents

Optisches abtastgerät für eine magneto-optische speicherung

Info

Publication number
DE69327369T2
DE69327369T2 DE69327369T DE69327369T DE69327369T2 DE 69327369 T2 DE69327369 T2 DE 69327369T2 DE 69327369 T DE69327369 T DE 69327369T DE 69327369 T DE69327369 T DE 69327369T DE 69327369 T2 DE69327369 T2 DE 69327369T2
Authority
DE
Germany
Prior art keywords
optical
magneto
scanner
storage
optical storage
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
DE69327369T
Other languages
English (en)
Other versions
DE69327369D1 (de
Inventor
Hideyoshi - - - Horimai
Katsuhiro - - Seo
Kimihiro - - - Saito
Kiyoshi - - - Toyota
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69327369D1 publication Critical patent/DE69327369D1/de
Publication of DE69327369T2 publication Critical patent/DE69327369T2/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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/1359—Single prisms
    • 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)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
DE69327369T 1992-02-07 1993-02-08 Optisches abtastgerät für eine magneto-optische speicherung Expired - Fee Related DE69327369T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5694592 1992-02-07
JP13776992 1992-04-30
PCT/JP1993/000158 WO1993016469A1 (en) 1992-02-07 1993-02-08 Phase varying device, and optical pickup apparatus using the same for magneto-optical storage

Publications (2)

Publication Number Publication Date
DE69327369D1 DE69327369D1 (de) 2000-01-27
DE69327369T2 true DE69327369T2 (de) 2000-06-21

Family

ID=26397950

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69327369T Expired - Fee Related DE69327369T2 (de) 1992-02-07 1993-02-08 Optisches abtastgerät für eine magneto-optische speicherung

Country Status (5)

Country Link
US (3) US5577018A (de)
EP (1) EP0579843B1 (de)
JP (1) JP3658763B2 (de)
DE (1) DE69327369T2 (de)
WO (1) WO1993016469A1 (de)

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* Cited by examiner, † Cited by third party
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DE69327369T2 (de) * 1992-02-07 2000-06-21 Sony Corp Optisches abtastgerät für eine magneto-optische speicherung
DE69329945T2 (de) * 1992-07-14 2001-06-07 Seiko Epson Corp Polarisierendes element, optisches element und optischer kopf
US5663940A (en) * 1993-11-19 1997-09-02 Sony Corporation Optical pickup apparatus including hologram element
JP3541416B2 (ja) * 1994-03-08 2004-07-14 ソニー株式会社 光学装置
JP2655077B2 (ja) * 1994-05-17 1997-09-17 日本電気株式会社 光ヘッド装置
KR970700356A (ko) * 1994-11-10 1997-01-08 이데이 노부유키 광 픽업 장치 및 광학 디스크 드라이브 장치(Optical pickup apparatus and optical disk drive apparatus)
JP2738337B2 (ja) * 1995-03-31 1998-04-08 日本電気株式会社 光再生媒体の再生方法及び再生装置
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
KR100194455B1 (ko) * 1995-12-30 1999-06-15 윤종용 팩시밀리 시스템의 예약 송신방법
US6215758B1 (en) * 1996-10-04 2001-04-10 Sony Corporation Recording medium
JP3110336B2 (ja) * 1996-10-30 2000-11-20 日本電気株式会社 投射型カラー液晶表示装置
JPH10222863A (ja) * 1996-12-06 1998-08-21 Pioneer Electron Corp 光ピックアップ装置
JP4365927B2 (ja) * 1999-03-12 2009-11-18 キヤノン株式会社 干渉計測装置及び格子干渉式エンコーダ
US8837161B2 (en) * 2002-07-16 2014-09-16 Nvidia Corporation Multi-configuration processor-memory substrate device
JP4210791B2 (ja) * 2003-10-23 2009-01-21 パナソニック株式会社 光学ヘッド及び光情報媒体駆動装置
JP4091903B2 (ja) * 2003-11-27 2008-05-28 シャープ株式会社 光学装置
DE102004032953B4 (de) * 2004-07-07 2008-02-07 Leica Microsystems Cms Gmbh Optische Vorrichtung und Rastermikroskop mit einer fokussierenden Optik
EP1812773A1 (de) * 2004-10-26 2007-08-01 Memsflow ApS Verfahren und system zur positionsbestimmung
JP2006309861A (ja) * 2005-04-27 2006-11-09 Sharp Corp 光集積ユニット及び光ピックアップ装置
JP2009129502A (ja) * 2007-11-22 2009-06-11 Sony Corp 光ピックアップ及び光ディスク装置
JP5173656B2 (ja) * 2008-07-31 2013-04-03 三洋電機株式会社 光ピックアップ装置
JP5173659B2 (ja) * 2008-08-01 2013-04-03 三洋電機株式会社 光ピックアップ装置および光ディスク装置
JP5173953B2 (ja) * 2008-08-01 2013-04-03 三洋電機株式会社 光ピックアップ装置および光ディスク装置
DE102011108181B4 (de) * 2011-07-22 2015-02-26 Bundesrepublik Deutschland, vertreten durch das Bundesministerium für Wirtschaft und Technologie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt Verfahren zum ortsaufgelösten Messen einer Magnetisierung einer magnetischen Struktur und magnetooptischer Datenspeicher
CN103809708A (zh) 2012-11-07 2014-05-21 辉达公司 平板电子设备及其辅助散热装置、以及两者的组件

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JPS57147148A (en) * 1981-03-05 1982-09-10 Olympus Optical Co Ltd Information reproducer with magnetooptic system
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JPS5979446A (ja) * 1982-10-28 1984-05-08 Sharp Corp 磁気光学ヘッド
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US4595261A (en) * 1983-10-13 1986-06-17 International Business Machines Corporation Phase retardation element and prism for use in an optical data storage system
JPS6190346A (ja) * 1984-10-11 1986-05-08 Hitachi Ltd 光磁気再生装置
US4858218A (en) * 1984-09-12 1989-08-15 Nikon Corporation Optical recording medium and reproducing apparatus
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JPS6266452A (ja) * 1985-09-19 1987-03-25 Nec Corp 光磁気ヘツド
KR950005031B1 (ko) * 1986-02-24 1995-05-17 소니 가부시끼가이샤 초점 검출 장치
JPS63138533A (ja) * 1986-11-28 1988-06-10 Fujitsu Ltd 光磁気デイスク装置の再生方式
US5270996A (en) * 1986-12-25 1993-12-14 Nec Corporation Optical head with diffraction grating producing five diffracted detection light beams
JPS63200346A (ja) * 1987-02-13 1988-08-18 Nec Corp 光磁気記録再生ヘツド
JPH0738260B2 (ja) * 1987-04-01 1995-04-26 日本電気株式会社 光磁気用光ヘツド装置
JPS63291238A (ja) * 1987-05-21 1988-11-29 Seiko Epson Corp 光メモリ−装置
JPS63292432A (ja) * 1987-05-25 1988-11-29 Sony Corp 光学ピックアップ装置
US4823220A (en) * 1987-11-16 1989-04-18 International Business Machines Corporation Detector for magnetooptic recorders
JP2730136B2 (ja) * 1988-03-18 1998-03-25 ソニー株式会社 光学ピツクアツプ装置
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
JPH01273238A (ja) * 1988-04-25 1989-11-01 Sony Corp 光学ヘッド装置
EP0374841B1 (de) * 1988-12-20 1994-03-09 Nec Corporation Optischer Kopf zur optimalen Detektierung eines Fokusfehlers
JP2982965B2 (ja) * 1989-09-18 1999-11-29 オリンパス光学工業株式会社 光学式読み取り装置
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JPH0827962B2 (ja) * 1990-06-27 1996-03-21 パイオニア株式会社 光ピックアップ
US5119352A (en) * 1990-08-17 1992-06-02 Hewlett-Packard Company Magneto optic data storage read out apparatus and method
DE69327369T2 (de) * 1992-02-07 2000-06-21 Sony Corp Optisches abtastgerät für eine magneto-optische speicherung

Also Published As

Publication number Publication date
WO1993016469A1 (en) 1993-08-19
US5577018A (en) 1996-11-19
US5742577A (en) 1998-04-21
EP0579843A4 (en) 1996-05-08
EP0579843B1 (de) 1999-12-22
EP0579843A1 (de) 1994-01-26
DE69327369D1 (de) 2000-01-27
JP3658763B2 (ja) 2005-06-08
US5563869A (en) 1996-10-08

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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