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WO2009057415A1 - 対物レンズ及び光ピックアップ装置 - Google Patents

対物レンズ及び光ピックアップ装置 Download PDF

Info

Publication number
WO2009057415A1
WO2009057415A1 PCT/JP2008/067919 JP2008067919W WO2009057415A1 WO 2009057415 A1 WO2009057415 A1 WO 2009057415A1 JP 2008067919 W JP2008067919 W JP 2008067919W WO 2009057415 A1 WO2009057415 A1 WO 2009057415A1
Authority
WO
WIPO (PCT)
Prior art keywords
objective lens
pickup device
temperature variation
path difference
optical path
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/JP2008/067919
Other languages
English (en)
French (fr)
Inventor
Kentarou Nakamura
Tohru Kimura
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.)
Konica Minolta Opto Inc
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 CN200880108756A priority Critical patent/CN101809663A/zh
Priority to US12/680,192 priority patent/US20100208567A1/en
Priority to JP2009538984A priority patent/JPWO2009057415A1/ja
Publication of WO2009057415A1 publication Critical patent/WO2009057415A1/ja
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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" 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
    • 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)
  • Lenses (AREA)

Abstract

　本発明は、シンプル且つ低コストな構成でありながら、環境温度変化に関わらず安定して、異なる光ディスクに対して互換可能に情報の記録／再生を行える光ピックアップ装置用の対物レンズ及びそれを用いた光ピックアップ装置を提供する。第１の光路差付与構造に対して、対物レンズの温度変化に起因して発生する収差を補正する第３の光路差付与構造を重畳させており、第２の光路差付与構造に対して、対物レンズの温度変化に起因して発生する収差を補正する第４の光路差付与構造を重畳させているので、これによりシンプルな構成でありながら、環境温度変化に対して安定して、異なる３種類の光ディスクに対して互換可能に情報の記録／再生を行えることを特徴とする。
PCT/JP2008/067919 2007-10-30 2008-10-02 対物レンズ及び光ピックアップ装置 Ceased WO2009057415A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200880108756A CN101809663A (zh) 2007-10-30 2008-10-02 物镜及光拾取装置
US12/680,192 US20100208567A1 (en) 2007-10-30 2008-10-02 Objective Lens and Optical Pickup Apparatus
JP2009538984A JPWO2009057415A1 (ja) 2007-10-30 2008-10-02 対物レンズ及び光ピックアップ装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007281457 2007-10-30
JP2007-281457 2007-10-30

Publications (1)

Publication Number Publication Date
WO2009057415A1 true WO2009057415A1 (ja) 2009-05-07

Family

ID=40590811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/067919 Ceased WO2009057415A1 (ja) 2007-10-30 2008-10-02 対物レンズ及び光ピックアップ装置

Country Status (4)

Country Link
US (1) US20100208567A1 (ja)
JP (1) JPWO2009057415A1 (ja)
CN (1) CN101809663A (ja)
WO (1) WO2009057415A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103140892B (zh) * 2010-09-29 2015-07-01 柯尼卡美能达先进多层薄膜株式会社 光拾取装置用的物镜以及光拾取装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005032410A (ja) * 2003-06-17 2005-02-03 Pentax Corp 光ピックアップ用対物レンズおよび光ピックアップ装置
WO2007102315A1 (ja) * 2006-03-07 2007-09-13 Konica Minolta Opto, Inc. 光ピックアップ装置、対物光学素子及び光情報記録再生装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3385213B2 (ja) * 1998-05-29 2003-03-10 ペンタックス株式会社 光ヘッド用対物レンズ
JP4595184B2 (ja) * 2000-10-02 2010-12-08 コニカミノルタホールディングス株式会社 光ピックアップ装置及び対物レンズ
JP4775610B2 (ja) * 2000-10-26 2011-09-21 コニカミノルタホールディングス株式会社 対物レンズ及び光ピックアップ装置
TWI239520B (en) * 2001-10-12 2005-09-11 Konica Corp Objective lens, optical element, optical pick-up apparatus and optical information recording and/or reproducing apparatus equipped therewith
JP3966303B2 (ja) * 2003-04-24 2007-08-29 コニカミノルタオプト株式会社 回折光学素子及びそれを用いた光ピックアップ装置
US7239598B2 (en) * 2003-06-17 2007-07-03 Pentax Corporation Objective lens for optical pick-up
JP4385902B2 (ja) * 2004-07-23 2009-12-16 コニカミノルタオプト株式会社 対物光学素子及び光ピックアップ装置
TWI394152B (zh) * 2007-07-30 2013-04-21 Sony Corp Objective lens, optical read / write head and optical disc device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005032410A (ja) * 2003-06-17 2005-02-03 Pentax Corp 光ピックアップ用対物レンズおよび光ピックアップ装置
WO2007102315A1 (ja) * 2006-03-07 2007-09-13 Konica Minolta Opto, Inc. 光ピックアップ装置、対物光学素子及び光情報記録再生装置

Also Published As

Publication number Publication date
CN101809663A (zh) 2010-08-18
US20100208567A1 (en) 2010-08-19
JPWO2009057415A1 (ja) 2011-03-10

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