WO2008114640A1 - Optical element unit, optical pickup device and optical element unit manufacturing method - Google Patents

Optical element unit, optical pickup device and optical element unit manufacturing method Download PDF

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Publication number
WO2008114640A1
WO2008114640A1 PCT/JP2008/054283 JP2008054283W WO2008114640A1 WO 2008114640 A1 WO2008114640 A1 WO 2008114640A1 JP 2008054283 W JP2008054283 W JP 2008054283W WO 2008114640 A1 WO2008114640 A1 WO 2008114640A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical element
optical
objective lens
lens section
element unit
Prior art date
Application number
PCT/JP2008/054283
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuhiro Wada
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 JP2009505140A priority Critical patent/JPWO2008114640A1/en
Publication of WO2008114640A1 publication Critical patent/WO2008114640A1/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
    • 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)
  • Optical Head (AREA)

Abstract

An optical element for optical pickup device applicable to a plurality of types of optical information recording medium performs highly accurate imaging by reducing aberration. The optical element performs information reproduction and recording from and to optical discs of two or more different types by a first objective lens section and a second objective lens section. In the optical element unit, a normal line of a second attaching reference surface or a normal line of a third attaching reference surface or a normal line of an optical surface top is inclined at a required inclination angle from a normal line of a first attaching reference surface. Thus, the optical element can be easily aligned and fixed to be in a status where the second objective lens section is inclined at a desired angle from the first objective lens section, and relative third coma aberration of the first objective lens section and the second objective lens section can be reduced.
PCT/JP2008/054283 2007-03-19 2008-03-10 Optical element unit, optical pickup device and optical element unit manufacturing method WO2008114640A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009505140A JPWO2008114640A1 (en) 2007-03-19 2008-03-10 OPTICAL ELEMENT UNIT, OPTICAL PICKUP DEVICE, AND OPTICAL ELEMENT UNIT MANUFACTURING METHOD

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007071276 2007-03-19
JP2007-071276 2007-03-19
JP2007092207 2007-03-30
JP2007-092207 2007-03-30
JP2007-145397 2007-05-31
JP2007145397 2007-05-31

Publications (1)

Publication Number Publication Date
WO2008114640A1 true WO2008114640A1 (en) 2008-09-25

Family

ID=39765748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/054283 WO2008114640A1 (en) 2007-03-19 2008-03-10 Optical element unit, optical pickup device and optical element unit manufacturing method

Country Status (2)

Country Link
JP (1) JPWO2008114640A1 (en)
WO (1) WO2008114640A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09306012A (en) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd Object lens
WO2006118221A1 (en) * 2005-04-28 2006-11-09 Matsushita Electric Industrial Co., Ltd. Method of adjusting inclination of objective lenses, method of producing optical pickup, device for adjusting inclination of objective lenses, optical pickup component, optical pickup, and optical information recording and reproducing device
WO2007040235A1 (en) * 2005-10-04 2007-04-12 Konica Minolta Opto, Inc. Objective lens unit and optical pickup device
JP2008059624A (en) * 2006-08-29 2008-03-13 Hitachi Maxell Ltd Lens holder and optical head apparatus using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09306012A (en) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd Object lens
WO2006118221A1 (en) * 2005-04-28 2006-11-09 Matsushita Electric Industrial Co., Ltd. Method of adjusting inclination of objective lenses, method of producing optical pickup, device for adjusting inclination of objective lenses, optical pickup component, optical pickup, and optical information recording and reproducing device
WO2007040235A1 (en) * 2005-10-04 2007-04-12 Konica Minolta Opto, Inc. Objective lens unit and optical pickup device
JP2008059624A (en) * 2006-08-29 2008-03-13 Hitachi Maxell Ltd Lens holder and optical head apparatus using the same

Also Published As

Publication number Publication date
JPWO2008114640A1 (en) 2010-07-01

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