DE60128313T2 - Benutzung von optischen Aberrationen zur Informationsverarbeitung von einem Informationsmedium mit einer Aufzeichnungsschicht unter einer durchsichtigen Schicht mit unregelmässiger Dicke - Google Patents

Benutzung von optischen Aberrationen zur Informationsverarbeitung von einem Informationsmedium mit einer Aufzeichnungsschicht unter einer durchsichtigen Schicht mit unregelmässiger Dicke Download PDF

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Publication number
DE60128313T2
DE60128313T2 DE60128313T DE60128313T DE60128313T2 DE 60128313 T2 DE60128313 T2 DE 60128313T2 DE 60128313 T DE60128313 T DE 60128313T DE 60128313 T DE60128313 T DE 60128313T DE 60128313 T2 DE60128313 T2 DE 60128313T2
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Expired - Lifetime
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DE60128313T
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German (de)
English (en)
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DE60128313D1 (de
Inventor
Hideo Ando
Satoru Kishita
Sumitaka Maruyama
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Toshiba Corp
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Toshiba Corp
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Publication of DE60128313D1 publication Critical patent/DE60128313D1/de
Publication of DE60128313T2 publication Critical patent/DE60128313T2/de
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    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
DE60128313T 2000-11-24 2001-03-13 Benutzung von optischen Aberrationen zur Informationsverarbeitung von einem Informationsmedium mit einer Aufzeichnungsschicht unter einer durchsichtigen Schicht mit unregelmässiger Dicke Expired - Lifetime DE60128313T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000358106 2000-11-24
JP2000358106A JP2002163830A (ja) 2000-11-24 2000-11-24 光学的収差を利用した光情報処理システムおよび厚みムラのある透明層で保護された記録層を持つ情報媒体

Publications (2)

Publication Number Publication Date
DE60128313D1 DE60128313D1 (de) 2007-06-21
DE60128313T2 true DE60128313T2 (de) 2008-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE60128313T Expired - Lifetime DE60128313T2 (de) 2000-11-24 2001-03-13 Benutzung von optischen Aberrationen zur Informationsverarbeitung von einem Informationsmedium mit einer Aufzeichnungsschicht unter einer durchsichtigen Schicht mit unregelmässiger Dicke

Country Status (4)

Country Link
US (2) US7142484B2 (enExample)
EP (1) EP1209669B1 (enExample)
JP (1) JP2002163830A (enExample)
DE (1) DE60128313T2 (enExample)

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Also Published As

Publication number Publication date
EP1209669A2 (en) 2002-05-29
US20020060958A1 (en) 2002-05-23
US7142484B2 (en) 2006-11-28
US20050002285A1 (en) 2005-01-06
JP2002163830A (ja) 2002-06-07
DE60128313D1 (de) 2007-06-21
US7224645B2 (en) 2007-05-29
EP1209669A3 (en) 2004-01-14
EP1209669B1 (en) 2007-05-09

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