ES2177566T3 - Aparato optico para grabacion/reproduccion. - Google Patents

Aparato optico para grabacion/reproduccion.

Info

Publication number
ES2177566T3
ES2177566T3 ES94309152T ES94309152T ES2177566T3 ES 2177566 T3 ES2177566 T3 ES 2177566T3 ES 94309152 T ES94309152 T ES 94309152T ES 94309152 T ES94309152 T ES 94309152T ES 2177566 T3 ES2177566 T3 ES 2177566T3
Authority
ES
Spain
Prior art keywords
light
optical
reproduction
recording
information
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 - Lifetime
Application number
ES94309152T
Other languages
English (en)
Inventor
Osamu Koyama
Takeshi Yamawaki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of ES2177566T3 publication Critical patent/ES2177566T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/1381—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
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10515—Reproducing
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

UN APARATO OPTICO PARA GRABACION/REPRODUCCION INCLUYE UN SISTEMA OPTICO DE IRRADIACION PARA IRRADIAR UN HAZ DE LUZ DESDE UNA FUENTE DE LUZ SOBRE UNA TRAYECTORIA PREDETERMINADA DE UN MEDIO DE GRABACION OPTICO QUE TIENE UNA SERIE DE TRAYECTORIAS VECINAS COMO UN PUNTO LUMINOSO FINO, DE TAL MODO QUE REALIZA GRABACION/REPRODUCCION DE INFORMACION O REPRODUCCION DE INFORMACION, Y UN SISTEMA OPTICO DE DETECCION PARA DETECTAR UN HAZ DE LUZ DEVUELTO POR EL MEDIO DE GRABACION OPTICO. UNA MASCARA ESTA DISPUESTA EN UNA REGION CAMPO DISTANTE SUFICIENTEMENTE SEPARADA DE UN PLANO FOCAL DEL SISTEMA OPTICO DE DETECCION, PARA OCULTAR LOS RAYOS MARGINALES EN UNA DIRECCION PERPENDICULAR A LA TRAYECTORIA DEL HAZ DE LUZ DEVUELTO, DE TAL MODO QUE LA INFORMACION REPRODUCIDA PROCEDENTE DE UNA TRAYECTORIA CONTIGUA A LA TRAYECTORIA PREDETERMINADA ES REDUCIDA RESPECTO A LA REPRODUCCION DE INFORMACION SOBRE LA TRAYECTORIA PREDETERMINADA.
ES94309152T 1993-12-09 1994-12-08 Aparato optico para grabacion/reproduccion. Expired - Lifetime ES2177566T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30929693 1993-12-09
JP27787794A JP3413427B2 (ja) 1993-12-09 1994-11-11 光記録再生装置

Publications (1)

Publication Number Publication Date
ES2177566T3 true ES2177566T3 (es) 2002-12-16

Family

ID=26552615

Family Applications (2)

Application Number Title Priority Date Filing Date
ES94309152T Expired - Lifetime ES2177566T3 (es) 1993-12-09 1994-12-08 Aparato optico para grabacion/reproduccion.
ES01203585T Expired - Lifetime ES2215852T3 (es) 1993-12-09 1994-12-08 Aparato para grabacion/reproduccion opticas.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES01203585T Expired - Lifetime ES2215852T3 (es) 1993-12-09 1994-12-08 Aparato para grabacion/reproduccion opticas.

Country Status (5)

Country Link
US (3) US6141302A (es)
EP (2) EP0658884B1 (es)
JP (1) JP3413427B2 (es)
DE (2) DE69430726T2 (es)
ES (2) ES2177566T3 (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3413427B2 (ja) 1993-12-09 2003-06-03 キヤノン株式会社 光記録再生装置
JP3443668B2 (ja) * 1998-04-30 2003-09-08 富士通株式会社 収差補正方法及び収差補正装置
NL1015136C2 (nl) * 1999-05-10 2006-05-18 Sharp Kk Optische opname/weergaveinrichting.
JP2000322757A (ja) 1999-05-12 2000-11-24 Sharp Corp 光記録再生装置
JP4843844B2 (ja) 1999-12-27 2011-12-21 ソニー株式会社 光ヘッド、受発光素子、及び光記録媒体記録再生装置
JP3885444B2 (ja) * 2000-02-10 2007-02-21 富士ゼロックス株式会社 光読取装置および光記録読取装置
US6836451B1 (en) * 2000-06-12 2004-12-28 Infineon Technologies, Ag Lensless optical servo system for an optically assisted disk drive
JP2002025098A (ja) * 2000-07-07 2002-01-25 Pioneer Electronic Corp ピックアップ装置
JP2004355783A (ja) * 2003-05-30 2004-12-16 Sharp Corp 光情報記録媒体とその再生方法
US7406007B2 (en) * 2003-09-02 2008-07-29 Matsushita Electric Industrial Co., Ltd. Optical disc apparatus and spherical aberration correction controlling apparatus
JP2005166195A (ja) * 2003-12-04 2005-06-23 Canon Inc 光情報記録再生装置及び光情報記録再生方法
JP2005346777A (ja) * 2004-05-31 2005-12-15 Toshiba Corp 光ディスク装置
JP4522829B2 (ja) * 2004-11-22 2010-08-11 株式会社リコー 光ピックアップ及び補正用収差発生方法とこれを用いた光情報処理装置
JP2006331471A (ja) * 2005-05-23 2006-12-07 Canon Inc 光情報記録再生装置
US7680013B2 (en) 2005-11-29 2010-03-16 Canon Kabushiki Kaisha Optical information recording and reproducing apparatus
JP4504319B2 (ja) * 2006-02-02 2010-07-14 株式会社日立製作所 光情報記録再生装置
US7791986B2 (en) * 2006-03-15 2010-09-07 Canon Kabushiki Kaisha Optical information recording/reproducing apparatus
US8135952B2 (en) * 2006-10-10 2012-03-13 Recursion Ventures LLC Method and system for secure position determination
JP4876844B2 (ja) * 2006-10-17 2012-02-15 ソニー株式会社 光ピックアップ及びこれを用いた光ディスク装置
FR2928486B1 (fr) * 2008-03-07 2011-08-19 Commissariat Energie Atomique Structure de stockage optique a haute densite
CN111221122B (zh) * 2020-03-18 2022-02-01 长春理工大学 较大视场强容差超分辨望远成像系统设计方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116004A (en) * 1980-02-20 1981-09-11 Olympus Optical Co Ltd Lens for video disk
JPS61220146A (ja) * 1985-03-26 1986-09-30 Aiwa Co Ltd 光ピツクアツプ装置
JPH07101523B2 (ja) * 1986-09-12 1995-11-01 キヤノン株式会社 光磁気信号再生装置
JPS63298831A (ja) * 1987-05-29 1988-12-06 Mitsubishi Electric Corp 光学式情報読取装置
JPH01116930A (ja) * 1987-10-29 1989-05-09 Canon Inc 光ビーム位置検出装置
DE3913229A1 (de) * 1988-09-19 1990-03-22 Pioneer Electronic Corp Wiedergabegeraet fuer optische informationen
US5172366A (en) * 1988-09-19 1992-12-15 Pioneer Electronic Corporation Optical information reproducing apparatus with selective photodetector output
US5072437A (en) * 1988-09-19 1991-12-10 Pioneer Electronic Corporation Optical information reproducing apparatus
JPH02208835A (ja) * 1989-02-07 1990-08-20 Matsushita Electric Ind Co Ltd 光ヘッド
US5247510A (en) * 1990-06-29 1993-09-21 Digital Equipment Corporation Increasing storage density of optical data media by detecting a selected portion of a light spot image corresponding to a single domain
JPH04324129A (ja) * 1991-04-23 1992-11-13 Pioneer Electron Corp 光ヘッド装置
TW218427B (es) * 1991-06-04 1994-01-01 Ibm
US5206852A (en) * 1991-06-29 1993-04-27 Samsung Electronics Co., Ltd. High-density recording optical head
DE69229451T2 (de) * 1991-11-20 1999-10-07 Sony Corp., Tokio/Tokyo Optische Abtasteinrichtung
JP3413427B2 (ja) * 1993-12-09 2003-06-03 キヤノン株式会社 光記録再生装置

Also Published As

Publication number Publication date
EP1174867B1 (en) 2004-04-21
DE69433732D1 (de) 2004-05-27
US6141302A (en) 2000-10-31
JP3413427B2 (ja) 2003-06-03
EP0658884A1 (en) 1995-06-21
DE69433732T2 (de) 2005-03-31
EP1174867A1 (en) 2002-01-23
US20020015377A1 (en) 2002-02-07
DE69430726T2 (de) 2002-10-24
US6418109B2 (en) 2002-07-09
JPH07220302A (ja) 1995-08-18
US6282165B1 (en) 2001-08-28
EP0658884B1 (en) 2002-06-05
DE69430726D1 (de) 2002-07-11
ES2215852T3 (es) 2004-10-16

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