WO2008146675A1 - Objective optical element for optical pickup device and optical pickup device - Google Patents

Objective optical element for optical pickup device and optical pickup device Download PDF

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Publication number
WO2008146675A1
WO2008146675A1 PCT/JP2008/059337 JP2008059337W WO2008146675A1 WO 2008146675 A1 WO2008146675 A1 WO 2008146675A1 JP 2008059337 W JP2008059337 W JP 2008059337W WO 2008146675 A1 WO2008146675 A1 WO 2008146675A1
Authority
WO
WIPO (PCT)
Prior art keywords
pickup device
function
optical pickup
optical
wavelength
Prior art date
Application number
PCT/JP2008/059337
Other languages
French (fr)
Japanese (ja)
Inventor
Kentarou Nakamura
Original Assignee
Konica Minolta Opto, 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 Konica Minolta Opto, Inc. filed Critical Konica Minolta Opto, Inc.
Priority to JP2009516264A priority Critical patent/JPWO2008146675A1/en
Priority to CN2008800174646A priority patent/CN101681645B/en
Publication of WO2008146675A1 publication Critical patent/WO2008146675A1/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
    • G11B7/1372—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
    • G11B7/125—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
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)

Abstract

It is possible to provide a low cost objective optical element for an optical pickup device which can appropriately record and/or reproduce information onto/from different optical information recording media. When the dimensions of used diffracted lights (r, s, t) = (10, 6, 5) or (2, 1, 1) in an optical path difference assigning structure, it is possible to maintain a high light use efficiency for any of the three types of wavelength (λ1, λ2, λ3) of the light fluxes passing through a central portion and secure a proper balance between the compatibility function and the function to suppress degradation of spherical aberration when the ambient temperature has changed. Moreover, when the dimensions of the used diffracted light (u, v) = (10, 6), (5,3), or (2, 1), it is possible to maintain a high light use efficiency for any of the two types of wavelength (λ1, λ2) of the light fluxes passing through a central portion and secure a proper balance between the compatibility function and the function to suppress degradation of spherical aberration when the ambient temperature has changed.
PCT/JP2008/059337 2007-05-31 2008-05-21 Objective optical element for optical pickup device and optical pickup device WO2008146675A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009516264A JPWO2008146675A1 (en) 2007-05-31 2008-05-21 Objective optical element for optical pickup device and optical pickup device
CN2008800174646A CN101681645B (en) 2007-05-31 2008-05-21 Objective optical element for optical pickup device and optical pickup device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-145398 2007-05-31
JP2007145398 2007-05-31

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/073,570 Continuation US8674552B2 (en) 2008-09-29 2011-03-28 Contactless power reception circuit and contactless power transmission system

Publications (1)

Publication Number Publication Date
WO2008146675A1 true WO2008146675A1 (en) 2008-12-04

Family

ID=40074933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059337 WO2008146675A1 (en) 2007-05-31 2008-05-21 Objective optical element for optical pickup device and optical pickup device

Country Status (3)

Country Link
JP (1) JPWO2008146675A1 (en)
CN (1) CN101681645B (en)
WO (1) WO2008146675A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028821A (en) * 2009-07-29 2011-02-10 Ricoh Co Ltd Aberration correction element and actuator including the same, optical pickup device, and optical information processing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112198577B (en) * 2019-10-23 2022-04-26 东莞东阳光医疗智能器件研发有限公司 Ophthalmic lens

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005032410A (en) * 2003-06-17 2005-02-03 Pentax Corp Objective lens for optical pickup, and optical pickup device
JP2005115152A (en) * 2003-10-09 2005-04-28 Sankyo Seiki Mfg Co Ltd Lens and optical head device
WO2005076266A1 (en) * 2004-02-09 2005-08-18 Pioneer Corporation Optical element, optical pickup, and information recording/reproduction device
WO2005117002A1 (en) * 2004-05-27 2005-12-08 Konica Minolta Opto, Inc. Objective optical system, optical pickup device, and optical disc drive device
JP2005353261A (en) * 2004-05-10 2005-12-22 Konica Minolta Opto Inc Optical pickup device
WO2006040902A1 (en) * 2004-10-08 2006-04-20 Pioneer Corporation Diffraction optical element, objective lens module, optical pickup, and optical information recording/reproducing apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200540857A (en) * 2004-05-10 2005-12-16 Konica Minolta Opto Inc Optical pickup apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005032410A (en) * 2003-06-17 2005-02-03 Pentax Corp Objective lens for optical pickup, and optical pickup device
JP2005115152A (en) * 2003-10-09 2005-04-28 Sankyo Seiki Mfg Co Ltd Lens and optical head device
WO2005076266A1 (en) * 2004-02-09 2005-08-18 Pioneer Corporation Optical element, optical pickup, and information recording/reproduction device
JP2005353261A (en) * 2004-05-10 2005-12-22 Konica Minolta Opto Inc Optical pickup device
WO2005117002A1 (en) * 2004-05-27 2005-12-08 Konica Minolta Opto, Inc. Objective optical system, optical pickup device, and optical disc drive device
WO2006040902A1 (en) * 2004-10-08 2006-04-20 Pioneer Corporation Diffraction optical element, objective lens module, optical pickup, and optical information recording/reproducing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028821A (en) * 2009-07-29 2011-02-10 Ricoh Co Ltd Aberration correction element and actuator including the same, optical pickup device, and optical information processing device

Also Published As

Publication number Publication date
JPWO2008146675A1 (en) 2010-08-19
CN101681645B (en) 2011-11-23
CN101681645A (en) 2010-03-24

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