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WO2003048834A3 - Optical scanning device - Google Patents

Optical scanning device Download PDF

Info

Publication number
WO2003048834A3
WO2003048834A3 PCT/IB2002/004960 IB0204960W WO03048834A3 WO 2003048834 A3 WO2003048834 A3 WO 2003048834A3 IB 0204960 W IB0204960 W IB 0204960W WO 03048834 A3 WO03048834 A3 WO 03048834A3
Authority
WO
WIPO (PCT)
Prior art keywords
objective lens
radiation beam
optical scanning
scanning device
lens assembly
Prior art date
Application number
PCT/IB2002/004960
Other languages
French (fr)
Other versions
WO2003048834A2 (en
Inventor
Bernardus H W Hendriks
Original Assignee
Koninkl 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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to KR10-2004-7008391A priority Critical patent/KR20040068176A/en
Priority to EP02783432A priority patent/EP1459120A2/en
Priority to AU2002347498A priority patent/AU2002347498A1/en
Priority to JP2003549970A priority patent/JP2005512253A/en
Publication of WO2003048834A2 publication Critical patent/WO2003048834A2/en
Publication of WO2003048834A3 publication Critical patent/WO2003048834A3/en

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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • 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)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)

Abstract

An optical scanning device is used for scanning first and second information layers with first and second radiation beams. The device includes a radiation source and an objective lens assembly (31). The lens assembly includes a doublet-lens system (61, 62) including a first objective lens (61) with a first cross-section having a first diameter (d1) and a second objective lens (62) with a second cross-section having a second, smaller diameter (d2). The first and second lenses are arranged for transforming the first radiation beam to a first focused radiation beam having a first numerical aperture. The objective lens assembly further includes a third objective lens (63) for transforming the second radiation beam to a second focused radiation beam having a second, smaller numerical aperture. The second and third objective lenses are integrally formed in one body (64).
PCT/IB2002/004960 2001-12-05 2002-11-21 Optical scanning device WO2003048834A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR10-2004-7008391A KR20040068176A (en) 2001-12-05 2002-11-21 Optical scanning device
EP02783432A EP1459120A2 (en) 2001-12-05 2002-11-21 Optical scanning device
AU2002347498A AU2002347498A1 (en) 2001-12-05 2002-11-21 Optical scanning device
JP2003549970A JP2005512253A (en) 2001-12-05 2002-11-21 Optical scanning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01204700.7 2001-12-05
EP01204700 2001-12-05

Publications (2)

Publication Number Publication Date
WO2003048834A2 WO2003048834A2 (en) 2003-06-12
WO2003048834A3 true WO2003048834A3 (en) 2003-10-02

Family

ID=8181364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/004960 WO2003048834A2 (en) 2001-12-05 2002-11-21 Optical scanning device

Country Status (6)

Country Link
EP (1) EP1459120A2 (en)
JP (1) JP2005512253A (en)
KR (1) KR20040068176A (en)
CN (1) CN1276418C (en)
AU (1) AU2002347498A1 (en)
WO (1) WO2003048834A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4507536B2 (en) * 2003-09-04 2010-07-21 パナソニック株式会社 Optical pickup device
US7301864B2 (en) 2003-07-07 2007-11-27 Matsushita Electric Industrial Co., Ltd. Objective lens, optical pick-up device, and optical disk device
JPWO2007040235A1 (en) * 2005-10-04 2009-04-16 コニカミノルタオプト株式会社 Objective lens unit and optical pickup device
WO2008111380A1 (en) * 2007-03-15 2008-09-18 Konica Minolta Opto, Inc. Optical element for optical pickup device, and optical pickup device
JPWO2008117640A1 (en) * 2007-03-27 2010-07-15 コニカミノルタオプト株式会社 Lens unit for optical pickup device and optical pickup device
WO2008117587A1 (en) * 2007-03-28 2008-10-02 Konica Minolta Opto, Inc. Optical element for optical pickup device and optical pickup device
WO2008120594A1 (en) * 2007-03-29 2008-10-09 Konica Minolta Opto, Inc. Optical pickup device lens unit and optical pickup device
JP4342568B2 (en) * 2007-04-13 2009-10-14 三洋電機株式会社 Optical pickup device and optical disk device
JP4905278B2 (en) * 2007-07-19 2012-03-28 ソニー株式会社 Optical pickup device and optical disk device using the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0963083A (en) * 1995-08-22 1997-03-07 Toshiba Corp Objective lens driving device
JPH09115170A (en) * 1995-10-18 1997-05-02 Seiko Epson Corp Compound objective lens and optical pickup device
JPH09230111A (en) * 1996-02-21 1997-09-05 Sharp Corp Integrally molded lens and pickup having the same, metal mold for molding lens as well as method for adjusting pickup
JPH09306012A (en) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd Object lens
JPH10275356A (en) * 1997-03-31 1998-10-13 Mitsumi Electric Co Ltd Lens for optical head
JP2000090472A (en) * 1998-09-11 2000-03-31 Ricoh Co Ltd Optical pickup head
JP2001067700A (en) * 1999-09-01 2001-03-16 Sony Corp Optical head and optical disk drive assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0963083A (en) * 1995-08-22 1997-03-07 Toshiba Corp Objective lens driving device
JPH09115170A (en) * 1995-10-18 1997-05-02 Seiko Epson Corp Compound objective lens and optical pickup device
JPH09230111A (en) * 1996-02-21 1997-09-05 Sharp Corp Integrally molded lens and pickup having the same, metal mold for molding lens as well as method for adjusting pickup
JPH09306012A (en) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd Object lens
JPH10275356A (en) * 1997-03-31 1998-10-13 Mitsumi Electric Co Ltd Lens for optical head
JP2000090472A (en) * 1998-09-11 2000-03-31 Ricoh Co Ltd Optical pickup head
JP2001067700A (en) * 1999-09-01 2001-03-16 Sony Corp Optical head and optical disk drive assembly

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 09 30 September 1997 (1997-09-30) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03 27 February 1998 (1998-02-27) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 20 10 July 2001 (2001-07-10) *

Also Published As

Publication number Publication date
CN1276418C (en) 2006-09-20
AU2002347498A8 (en) 2003-06-17
EP1459120A2 (en) 2004-09-22
JP2005512253A (en) 2005-04-28
CN1599928A (en) 2005-03-23
WO2003048834A2 (en) 2003-06-12
KR20040068176A (en) 2004-07-30
AU2002347498A1 (en) 2003-06-17

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