DE69716219D1 - Objektivlinse und optischer Kopf und damit versehenes optisches Plattengerät - Google Patents

Objektivlinse und optischer Kopf und damit versehenes optisches Plattengerät

Info

Publication number
DE69716219D1
DE69716219D1 DE69716219T DE69716219T DE69716219D1 DE 69716219 D1 DE69716219 D1 DE 69716219D1 DE 69716219 T DE69716219 T DE 69716219T DE 69716219 T DE69716219 T DE 69716219T DE 69716219 D1 DE69716219 D1 DE 69716219D1
Authority
DE
Germany
Prior art keywords
objective lens
device provided
disk device
optical
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 - Fee Related
Application number
DE69716219T
Other languages
English (en)
Other versions
DE69716219T2 (de
Inventor
Sadao Mizuno
Yoshiaki Komma
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 Holdings 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
Application granted granted Critical
Publication of DE69716219D1 publication Critical patent/DE69716219D1/de
Publication of DE69716219T2 publication Critical patent/DE69716219T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • 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
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1367—Stepped phase plates
    • 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
    • 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
    • G11B7/135—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
    • 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
    • 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
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69716219T 1996-11-20 1997-11-18 Objektivlinse und optischer Kopf und damit versehenes optisches Plattengerät Expired - Fee Related DE69716219T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30895796 1996-11-20

Publications (2)

Publication Number Publication Date
DE69716219D1 true DE69716219D1 (de) 2002-11-14
DE69716219T2 DE69716219T2 (de) 2003-04-17

Family

ID=17987284

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69716219T Expired - Fee Related DE69716219T2 (de) 1996-11-20 1997-11-18 Objektivlinse und optischer Kopf und damit versehenes optisches Plattengerät

Country Status (6)

Country Link
US (2) US6069860A (de)
EP (1) EP0844606B1 (de)
KR (1) KR19980042630A (de)
CN (1) CN1154990C (de)
DE (1) DE69716219T2 (de)
TW (1) TW486692B (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449235B1 (en) * 1998-04-04 2002-09-10 Lg Electronics, Inc. Optical pick-up apparatus and optical recording/reproducing apparatus using the same
US6088322A (en) * 1998-05-07 2000-07-11 Broome; Barry G. Single objective lens for use with CD or DVD optical disks
JP3638210B2 (ja) * 1998-06-15 2005-04-13 シャープ株式会社 ホログラムレーザユニット及びそれを使用した光ピックアップ装置
EP0984440A3 (de) 1998-09-04 2000-05-24 Matsushita Electric Industrial Co., Ltd. Vorrichtung zur Aberrationsdetektion und Gerät zur Aufnahme und Wiedergabe von optischer Information
JP2000206405A (ja) * 1999-01-14 2000-07-28 Pioneer Electronic Corp 非球面対物レンズ及びその製造方法
US6829209B1 (en) * 1999-06-23 2004-12-07 Matsushita Electric Industrial Co., Ltd. Objective for optical disk, optical head device and optical information recording/reproducing apparatus both comprising the same, mold for forming lens, method for machining mold for forming lens, and shape measuring instrument
EP1096415A1 (de) 1999-10-26 2001-05-02 Datalogic S.P.A. Optische Vorrichtung, Linse und optisches Element zum Fokussieren eines Laserstrahls, Verfahren und Vorrichtung zum Zusammenbau der optischen Vorrichtung
US7012875B2 (en) * 2000-09-06 2006-03-14 Hitachi, Ltd. Optical disk apparatus using focal shift signals to control spherical aberration
DE60330817D1 (de) * 2002-02-27 2010-02-11 Ricoh Kk Optischer Lesekopf und optische Informationsverarbeitungsvorrichtung
EP1523000B1 (de) * 2002-07-16 2008-10-15 Fujitsu Limited Mehrschichtiges optisches aufzeichnungsmedium und speicherung
JP2007073094A (ja) * 2005-09-05 2007-03-22 Konica Minolta Opto Inc 光ピックアップ装置
JP4896979B2 (ja) * 2006-07-21 2012-03-14 パナソニック株式会社 光ヘッド装置、光情報装置、コンピュータ、ディスクプレーヤー、カーナビゲーションシステム、光ディスクレコーダーおよび車両
JPWO2008013047A1 (ja) * 2006-07-26 2009-12-17 コニカミノルタホールディングス株式会社 光学素子、光学素子の製造方法及び光ピックアップ装置
US8339924B2 (en) * 2006-10-10 2012-12-25 Panasonic Corporation Optical pickup device capable of emitting first and second light beams having different wavelengths and including a light blocking member for blocking light of a specific wavelength, and a optical information device, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server performing the same
EP1936618A3 (de) * 2006-12-18 2008-08-06 Sanyo Electric Co., Ltd. Optischer Aufnehmer mit Funktion zur Längenkorrektur optischer Pfade

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0354740A (ja) * 1989-07-24 1991-03-08 Matsushita Electric Ind Co Ltd 光学情報記録部材および光学情報記録再生装置
US5281797A (en) * 1991-12-26 1994-01-25 Hitachi, Ltd. Short wavelength optical disk head having a changeable aperture
JP2559006B2 (ja) * 1993-01-13 1996-11-27 松下電器産業株式会社 光ヘッド
JP2532818B2 (ja) * 1993-02-01 1996-09-11 松下電器産業株式会社 対物レンズおよび光ヘッド装置
JP3309470B2 (ja) * 1993-03-10 2002-07-29 松下電器産業株式会社 光情報記録再生装置
EP0720158B1 (de) * 1994-12-26 1999-10-13 Kabushiki Kaisha Toshiba Blendenvorrichtung für Objektivlinse
JPH08248307A (ja) * 1995-03-10 1996-09-27 Sony Corp 対物レンズ、光ヘッド装置及び光ディスク再生装置
JP2995003B2 (ja) * 1995-05-08 1999-12-27 三洋電機株式会社 光学式再生装置
JP3476989B2 (ja) * 1995-08-04 2003-12-10 パイオニア株式会社 光ピックアップ
KR100234257B1 (ko) * 1995-08-30 1999-12-15 윤종용 대물렌즈 장치 및 안정된 포커스 서보 신호를 얻는방법 및 이를 적용한 광픽업 장치 및 두께가 다른 디스크를 판별하는 방법 및 두께가 다른 디스크로부터 정보를 재생하고 기록하는 방법
TW319833B (de) 1995-08-30 1997-11-11 Samsung Electronics Co Ltd
KR100239237B1 (ko) * 1995-09-12 2000-01-15 가나이 쓰도무 광디스크장치 및 그의 광헤드
JP2877044B2 (ja) * 1995-09-29 1999-03-31 日本電気株式会社 光ヘッド装置
KR100206771B1 (ko) * 1995-12-29 1999-07-01 구자홍 광픽업장치
US5659533A (en) * 1996-07-23 1997-08-19 Sampo Corporation Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor

Also Published As

Publication number Publication date
KR19980042630A (ko) 1998-08-17
DE69716219T2 (de) 2003-04-17
US6069860A (en) 2000-05-30
US6272099B1 (en) 2001-08-07
CN1187000A (zh) 1998-07-08
TW486692B (en) 2002-05-11
EP0844606A1 (de) 1998-05-27
EP0844606B1 (de) 2002-10-09
CN1154990C (zh) 2004-06-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee