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WO2004029949A3 - Dispositif de balayage optique - Google Patents

Dispositif de balayage optique Download PDF

Info

Publication number
WO2004029949A3
WO2004029949A3 PCT/IB2003/004032 IB0304032W WO2004029949A3 WO 2004029949 A3 WO2004029949 A3 WO 2004029949A3 IB 0304032 W IB0304032 W IB 0304032W WO 2004029949 A3 WO2004029949 A3 WO 2004029949A3
Authority
WO
WIPO (PCT)
Prior art keywords
plane
optical axis
birefringent element
scanning device
polarisation mode
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.)
Ceased
Application number
PCT/IB2003/004032
Other languages
English (en)
Other versions
WO2004029949A2 (fr
Inventor
Sjoerd Stallinga
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to AU2003263438A priority Critical patent/AU2003263438A1/en
Publication of WO2004029949A2 publication Critical patent/WO2004029949A2/fr
Publication of WO2004029949A3 publication Critical patent/WO2004029949A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • 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
    • G11B7/1374—Objective lenses
    • 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
    • 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
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • 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
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)

Abstract

Cette invention concerne un dispositif de balayage optique permettant de balayer un support d'enregistrement optique (1) qui comprend une couche d'informations. Un élément biréfringent (20) est disposé le long d'un axe optique du dispositif entre la première et la seconde lentille d'un objectif composite (10). Cet élément biréfringent présente une première caractéristique génératrice d'aberrations dans un premier mode de polarisation, et une seconde caractéristique différente génératrice d'aberrations dans un second mode de polarisation. La surface de l'élément biréfringent présente un premier profil selon un premier plan qui est parallèle à l'axe optique, et un second profil différent selon un second plan qui est parallèle à l'axe optique et perpendiculaire au premier plan, ce qui procure la puissance d'une lentille anamorphique dans le mode de polarisation extraordinaire.
PCT/IB2003/004032 2002-09-27 2003-09-15 Dispositif de balayage optique Ceased WO2004029949A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003263438A AU2003263438A1 (en) 2002-09-27 2003-09-15 Optical scanning device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP02078997 2002-09-27
EP02078997.0 2002-09-27
EP02079589 2002-11-01
EP02079589.4 2002-11-01
EP02080596 2002-12-30
EP02080596.6 2002-12-30

Publications (2)

Publication Number Publication Date
WO2004029949A2 WO2004029949A2 (fr) 2004-04-08
WO2004029949A3 true WO2004029949A3 (fr) 2004-07-15

Family

ID=32045640

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/004032 Ceased WO2004029949A2 (fr) 2002-09-27 2003-09-15 Dispositif de balayage optique

Country Status (2)

Country Link
AU (1) AU2003263438A1 (fr)
WO (1) WO2004029949A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09293268A (ja) * 1996-03-01 1997-11-11 Olympus Optical Co Ltd 光ピックアップ
US5745465A (en) * 1997-01-23 1998-04-28 Industrial Technology Research Institute Digital video disc pick-up head system
WO2001024174A1 (fr) * 1999-09-30 2001-04-05 Koninklijke Philips Electronics N.V. Dispositif de balayage optique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09293268A (ja) * 1996-03-01 1997-11-11 Olympus Optical Co Ltd 光ピックアップ
US5745465A (en) * 1997-01-23 1998-04-28 Industrial Technology Research Institute Digital video disc pick-up head system
WO2001024174A1 (fr) * 1999-09-30 2001-04-05 Koninklijke Philips Electronics N.V. Dispositif de balayage optique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03 27 February 1998 (1998-02-27) *

Also Published As

Publication number Publication date
AU2003263438A1 (en) 2004-04-19
WO2004029949A2 (fr) 2004-04-08

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