JP5225005B2 - 光ピックアップ装置及び光ディスク装置 - Google Patents

光ピックアップ装置及び光ディスク装置 Download PDF

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Publication number
JP5225005B2
JP5225005B2 JP2008259463A JP2008259463A JP5225005B2 JP 5225005 B2 JP5225005 B2 JP 5225005B2 JP 2008259463 A JP2008259463 A JP 2008259463A JP 2008259463 A JP2008259463 A JP 2008259463A JP 5225005 B2 JP5225005 B2 JP 5225005B2
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JP
Japan
Prior art keywords
optical
liquid crystal
laser light
lens
pickup device
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.)
Expired - Fee Related
Application number
JP2008259463A
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English (en)
Japanese (ja)
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JP2009211794A5 (https=
JP2009211794A (ja
Inventor
昌久 篠田
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2008259463A priority Critical patent/JP5225005B2/ja
Priority to CN2009100043237A priority patent/CN101504846B/zh
Priority to US12/367,392 priority patent/US8077581B2/en
Publication of JP2009211794A publication Critical patent/JP2009211794A/ja
Publication of JP2009211794A5 publication Critical patent/JP2009211794A5/ja
Application granted granted Critical
Publication of JP5225005B2 publication Critical patent/JP5225005B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G11B7/125—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
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
JP2008259463A 2008-02-08 2008-10-06 光ピックアップ装置及び光ディスク装置 Expired - Fee Related JP5225005B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008259463A JP5225005B2 (ja) 2008-02-08 2008-10-06 光ピックアップ装置及び光ディスク装置
CN2009100043237A CN101504846B (zh) 2008-02-08 2009-02-06 光拾取装置及光盘装置
US12/367,392 US8077581B2 (en) 2008-02-08 2009-02-06 Optical pickup and optical disc drive

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008028340 2008-02-08
JP2008028340 2008-02-08
JP2008259463A JP5225005B2 (ja) 2008-02-08 2008-10-06 光ピックアップ装置及び光ディスク装置

Publications (3)

Publication Number Publication Date
JP2009211794A JP2009211794A (ja) 2009-09-17
JP2009211794A5 JP2009211794A5 (https=) 2011-11-17
JP5225005B2 true JP5225005B2 (ja) 2013-07-03

Family

ID=40938773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008259463A Expired - Fee Related JP5225005B2 (ja) 2008-02-08 2008-10-06 光ピックアップ装置及び光ディスク装置

Country Status (3)

Country Link
US (1) US8077581B2 (https=)
JP (1) JP5225005B2 (https=)
CN (1) CN101504846B (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069212A (ja) * 2010-09-24 2012-04-05 Jvc Kenwood Corp 光ディスク装置、フォーカス制御方法及び制御プログラム
TW201214420A (en) * 2010-09-27 2012-04-01 Sunplus Technology Co Ltd Method for determining type of optical disk and optical storage apparatus thereof
CN107688275B (zh) * 2016-08-06 2023-10-13 深圳光峰科技股份有限公司 照明装置及显示系统
US11442332B1 (en) * 2020-10-26 2022-09-13 Amazon Technologies, Inc. Tunable liquid crystal lens with electrically tunable axis of astigmatism

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155525A (ja) * 1982-03-10 1983-09-16 Hitachi Ltd フオ−カス誤差検出装置
JPS61140920A (ja) * 1984-12-13 1986-06-28 Olympus Optical Co Ltd 液晶レンズ
JPH05242521A (ja) * 1992-02-27 1993-09-21 Pioneer Electron Corp 光ディスクプレーヤ
JP3476989B2 (ja) * 1995-08-04 2003-12-10 パイオニア株式会社 光ピックアップ
DE10059304A1 (de) 2000-11-29 2002-06-06 Sms Demag Ag Gießrolle zum Gießen und/oder Stützen eines Gießstranges, insbesondere für eine Zwei-Rollen-Gießmaschine
JP2003059080A (ja) * 2001-08-09 2003-02-28 Matsushita Electric Ind Co Ltd 光ヘッド装置及び光学情報記録再生装置
JP2004079071A (ja) 2002-08-16 2004-03-11 Pioneer Electronic Corp 光記録媒体及び光記録方法
JP2004138900A (ja) * 2002-10-18 2004-05-13 Pioneer Electronic Corp 収差補正素子、収差補正装置、情報記録再生装置及び収差補正方法
US7209415B2 (en) * 2002-10-29 2007-04-24 Sanyo Electric Co., Ltd. Optical pickup device and recording and/or reproducing device
JP2005339771A (ja) 2004-04-27 2005-12-08 Matsushita Electric Ind Co Ltd 光ピックアップ装置
EP1783537A4 (en) * 2004-07-20 2009-09-02 Asahi Glass Co Ltd Liquid crystal element and optical head device
EP1815468B1 (en) * 2004-11-16 2008-06-18 Koninklijke Philips Electronics N.V. Optical head with switchable diameter of the radiation spot on the radiation detector
JP4522829B2 (ja) * 2004-11-22 2010-08-11 株式会社リコー 光ピックアップ及び補正用収差発生方法とこれを用いた光情報処理装置
JP2007179676A (ja) * 2005-12-28 2007-07-12 Toshiba Corp 光ヘッド装置及び光ディスク装置
US20090116346A1 (en) * 2006-03-30 2009-05-07 Pioneer Corporation Optical recording/playback device and medium differentiation method
US20100074077A1 (en) * 2006-10-18 2010-03-25 Ryuichi Katayama Optical head device and optical information recording/reproducing device
US20090274020A1 (en) * 2006-11-24 2009-11-05 Nec Corporation Optical head unit and optical information recording/reproducing apparatus
JP5066373B2 (ja) 2007-02-23 2012-11-07 Ｊｘ日鉱日石エネルギー株式会社 燃料電池モジュール
US20090080319A1 (en) * 2007-09-20 2009-03-26 Hoya Corporation Objective optical system and optical information recording/reproducing device having the same

Also Published As

Publication number Publication date
US8077581B2 (en) 2011-12-13
CN101504846B (zh) 2011-01-26
JP2009211794A (ja) 2009-09-17
CN101504846A (zh) 2009-08-12
US20090201785A1 (en) 2009-08-13

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