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DE602005001407D1 - Optisches Plattenlaufwerk - Google Patents

Optisches Plattenlaufwerk

Info

Publication number
DE602005001407D1
DE602005001407D1 DE602005001407T DE602005001407T DE602005001407D1 DE 602005001407 D1 DE602005001407 D1 DE 602005001407D1 DE 602005001407 T DE602005001407 T DE 602005001407T DE 602005001407 T DE602005001407 T DE 602005001407T DE 602005001407 D1 DE602005001407 D1 DE 602005001407D1
Authority
DE
Germany
Prior art keywords
optical disk
disk drive
drive
optical
disk
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 - Lifetime
Application number
DE602005001407T
Other languages
English (en)
Other versions
DE602005001407T2 (de
Inventor
Makoto Takashima
Hideki Aikoh
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE602005001407D1 publication Critical patent/DE602005001407D1/de
Application granted granted Critical
Publication of DE602005001407T2 publication Critical patent/DE602005001407T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/133—Shape of individual detector elements
    • 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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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)
DE602005001407T 2004-02-17 2005-02-16 Optisches Plattenlaufwerk Expired - Lifetime DE602005001407T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004039399 2004-02-17
JP2004039399 2004-02-17

Publications (2)

Publication Number Publication Date
DE602005001407D1 true DE602005001407D1 (de) 2007-08-02
DE602005001407T2 DE602005001407T2 (de) 2008-02-21

Family

ID=34697973

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005001407T Expired - Lifetime DE602005001407T2 (de) 2004-02-17 2005-02-16 Optisches Plattenlaufwerk

Country Status (4)

Country Link
US (1) US7349320B2 (de)
EP (1) EP1564729B1 (de)
CN (1) CN1658302B (de)
DE (1) DE602005001407T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050201248A1 (en) * 2004-03-10 2005-09-15 Junichi Kitabayashi Optical pickup apparatus and an optical disc drive apparatus equipped with such an optical pickup
EP1770694A3 (de) * 2005-09-01 2008-10-15 Kabushiki Kaisha Toshiba Fotodetektorschaltung, Verfahren zur Herleitung eines Signals zur Laserlichtemissionsmengensteuerung, optische Lesekopfvorrichtung und optisches Plattengerät
JP2008176882A (ja) * 2007-01-19 2008-07-31 Sharp Corp フロントモニタ装置ならびにそれを備える光ピックアップ装置および情報記録再生装置
JP5820729B2 (ja) * 2012-01-11 2015-11-24 株式会社ニューフレアテクノロジー 光束分岐素子、およびマスク欠陥検査装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154657A (en) 1981-03-20 1982-09-24 Mitsubishi Electric Corp Optical type information reproducing device
JP3030704B2 (ja) 1992-06-08 2000-04-10 三菱電機株式会社 光記録再生装置
JPH08102079A (ja) 1994-09-30 1996-04-16 Matsushita Electric Ind Co Ltd 光学ヘッド
JP3645319B2 (ja) * 1995-07-31 2005-05-11 株式会社東芝 情報処理装置
US6275461B1 (en) * 1996-08-29 2001-08-14 Samsung Electronic Co., Ltd. Optical pickup using an optical phase plate
JPH10222864A (ja) * 1997-01-31 1998-08-21 Sharp Corp 光ピックアップ
US6304540B1 (en) * 1998-03-30 2001-10-16 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
JP3765348B2 (ja) * 1997-05-29 2006-04-12 ミツミ電機株式会社 レーザ光投光装置
JPH1186328A (ja) * 1997-09-12 1999-03-30 Asahi Optical Co Ltd 光学式情報記録再生装置
JP2001250257A (ja) 2000-03-01 2001-09-14 Canon Electronics Inc 光集積素子及びそれを用いた光ピックアップ装置
WO2002021520A1 (en) * 2000-09-06 2002-03-14 Hitachi, Ltd. Optical head and optical disk device
JP2002100044A (ja) * 2000-09-25 2002-04-05 Sony Corp 光記録装置およびそれにおけるレーザパワー制御方法
JP2002109771A (ja) * 2000-09-29 2002-04-12 Ricoh Co Ltd 光学装置
JP2003288733A (ja) 2002-03-28 2003-10-10 Asahi Glass Co Ltd 開口制限素子および光ヘッド装置

Also Published As

Publication number Publication date
EP1564729B1 (de) 2007-06-20
EP1564729A3 (de) 2006-01-04
DE602005001407T2 (de) 2008-02-21
CN1658302B (zh) 2010-04-28
CN1658302A (zh) 2005-08-24
US7349320B2 (en) 2008-03-25
EP1564729A2 (de) 2005-08-17
US20050180297A1 (en) 2005-08-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP