WO2008126562A1 - Objective optical element unit for optical pickup device, and optical pickup device - Google Patents

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

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Publication number
WO2008126562A1
WO2008126562A1 PCT/JP2008/054372 JP2008054372W WO2008126562A1 WO 2008126562 A1 WO2008126562 A1 WO 2008126562A1 JP 2008054372 W JP2008054372 W JP 2008054372W WO 2008126562 A1 WO2008126562 A1 WO 2008126562A1
Authority
WO
WIPO (PCT)
Prior art keywords
pickup device
optical pickup
optical
basic structure
element unit
Prior art date
Application number
PCT/JP2008/054372
Other languages
French (fr)
Japanese (ja)
Inventor
Kentarou Nakamura
Tohru Kimura
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 JP2009508990A priority Critical patent/JPWO2008126562A1/en
Publication of WO2008126562A1 publication Critical patent/WO2008126562A1/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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • 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
    • 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

Landscapes

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

Abstract

Provided is an objective optical element unit for an optical pickup device which suitably records and/or reproduces information on/from different optical information recoding mediums at low cost. Such optical pickup device is also provided. On an optical surface on a light source side of a first optical element (L1), a first basic structure and a second basic structure are placed one over another. Since a luminous flux passed through the center of the first basic structure is made to always pass the center of the second basic structure, residual coma aberration is reduced, and information is suitably recorded and/or reproduced irrespective of temperature change.
PCT/JP2008/054372 2007-03-28 2008-03-11 Objective optical element unit for optical pickup device, and optical pickup device WO2008126562A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009508990A JPWO2008126562A1 (en) 2007-03-28 2008-03-11 Objective optical element unit for optical pickup device and optical pickup device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007085092 2007-03-28
JP2007-085092 2007-03-28
JP2007164515 2007-06-22
JP2007-164515 2007-06-22

Publications (1)

Publication Number Publication Date
WO2008126562A1 true WO2008126562A1 (en) 2008-10-23

Family

ID=39863708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/054372 WO2008126562A1 (en) 2007-03-28 2008-03-11 Objective optical element unit for optical pickup device, and optical pickup device

Country Status (2)

Country Link
JP (1) JPWO2008126562A1 (en)
WO (1) WO2008126562A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018169093A1 (en) * 2017-03-17 2018-09-20 大日本印刷株式会社 Diffractive optical element
US11366256B2 (en) 2017-03-17 2022-06-21 Dai Nippon Printing Co., Ltd. Diffractive optical element

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004062971A (en) * 2002-07-26 2004-02-26 Konica Minolta Holdings Inc Objective lens unit, optical pickup device, and optical information recording/reproducing device
JP2004219977A (en) * 2002-07-31 2004-08-05 Asahi Glass Co Ltd Phase correction element and optical head system
JP2004319062A (en) * 2003-03-31 2004-11-11 Konica Minolta Holdings Inc Optical pickup device
JP2005158217A (en) * 2003-04-24 2005-06-16 Konica Minolta Opto Inc Diffractive optical element and optical pickup device using the same
JP2005202998A (en) * 2004-01-13 2005-07-28 Pentax Corp Objective lens for optical disk
JP2005209321A (en) * 2003-06-18 2005-08-04 Konica Minolta Opto Inc Optical element, aberration correction element and condensing element for optical pickup device, objective optical system, optical pickup device, and optical information recording and reproducing device
JP2006040512A (en) * 2004-06-21 2006-02-09 Pentax Corp Objective lens for optical pickup, and optical pickup device
JP2006185576A (en) * 2004-12-01 2006-07-13 Pentax Corp Design method of optical element and optical information recording/reproducing device
WO2007013346A1 (en) * 2005-07-28 2007-02-01 Matsushita Electric Industrial Co., Ltd. Optical head and optical disc device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004062971A (en) * 2002-07-26 2004-02-26 Konica Minolta Holdings Inc Objective lens unit, optical pickup device, and optical information recording/reproducing device
JP2004219977A (en) * 2002-07-31 2004-08-05 Asahi Glass Co Ltd Phase correction element and optical head system
JP2004319062A (en) * 2003-03-31 2004-11-11 Konica Minolta Holdings Inc Optical pickup device
JP2005158217A (en) * 2003-04-24 2005-06-16 Konica Minolta Opto Inc Diffractive optical element and optical pickup device using the same
JP2005209321A (en) * 2003-06-18 2005-08-04 Konica Minolta Opto Inc Optical element, aberration correction element and condensing element for optical pickup device, objective optical system, optical pickup device, and optical information recording and reproducing device
JP2005202998A (en) * 2004-01-13 2005-07-28 Pentax Corp Objective lens for optical disk
JP2006040512A (en) * 2004-06-21 2006-02-09 Pentax Corp Objective lens for optical pickup, and optical pickup device
JP2006185576A (en) * 2004-12-01 2006-07-13 Pentax Corp Design method of optical element and optical information recording/reproducing device
WO2007013346A1 (en) * 2005-07-28 2007-02-01 Matsushita Electric Industrial Co., Ltd. Optical head and optical disc device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018169093A1 (en) * 2017-03-17 2018-09-20 大日本印刷株式会社 Diffractive optical element
US11366256B2 (en) 2017-03-17 2022-06-21 Dai Nippon Printing Co., Ltd. Diffractive optical element

Also Published As

Publication number Publication date
JPWO2008126562A1 (en) 2010-07-22

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