DE68916623D1 - Optische Abtastvorrichtung. - Google Patents

Optische Abtastvorrichtung.

Info

Publication number
DE68916623D1
DE68916623D1 DE68916623T DE68916623T DE68916623D1 DE 68916623 D1 DE68916623 D1 DE 68916623D1 DE 68916623 T DE68916623 T DE 68916623T DE 68916623 T DE68916623 T DE 68916623T DE 68916623 D1 DE68916623 D1 DE 68916623D1
Authority
DE
Germany
Prior art keywords
optical scanner
scanner
optical
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
DE68916623T
Other languages
English (en)
Other versions
DE68916623T2 (de
Inventor
Hiroshi Katayama
Michiaki Sato
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE68916623D1 publication Critical patent/DE68916623D1/de
Publication of DE68916623T2 publication Critical patent/DE68916623T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B2007/0003Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006Recording, 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)
DE68916623T 1988-12-09 1989-11-29 Optische Abtastvorrichtung. Expired - Fee Related DE68916623T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63312392A JPH0677336B2 (ja) 1988-12-09 1988-12-09 光ピックアップ装置

Publications (2)

Publication Number Publication Date
DE68916623D1 true DE68916623D1 (de) 1994-08-11
DE68916623T2 DE68916623T2 (de) 1995-02-23

Family

ID=18028698

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916623T Expired - Fee Related DE68916623T2 (de) 1988-12-09 1989-11-29 Optische Abtastvorrichtung.

Country Status (4)

Country Link
US (1) US5093821A (de)
EP (1) EP0372365B1 (de)
JP (1) JPH0677336B2 (de)
DE (1) DE68916623T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491458A1 (de) * 1990-12-14 1992-06-24 General Electric Company Mehrkanaliges optisches Plattensystem
JP3639607B2 (ja) * 1992-10-21 2005-04-20 キヤノン株式会社 光磁気情報記録再生装置
JPH06162557A (ja) * 1992-11-18 1994-06-10 Matsushita Electric Ind Co Ltd 光学的記録再生装置
JPH06309725A (ja) * 1993-04-22 1994-11-04 Canon Inc 2ビーム光ヘッド
US6016301A (en) * 1996-04-01 2000-01-18 Sony Corporation Optical pickup device and optical disc reproducing apparatus
JPH09320098A (ja) * 1996-05-27 1997-12-12 Sony Corp 光ピックアップ装置および複合光学装置
US6504812B2 (en) 1996-05-27 2003-01-07 Sony Corporation Optical pickup device with a plurality of laser couplers
US7038994B1 (en) 1996-05-27 2006-05-02 Sony Corporation Optical pickup device with a plurality of laser couplers
US5696749A (en) * 1996-06-28 1997-12-09 Eastman Kodak Company Dual-wavelength optical recording head utilizing grating beam splitter and integrated laser and detectors
JP3112841B2 (ja) * 1996-08-27 2000-11-27 日本電気株式会社 光ピックアップ装置
KR100230264B1 (ko) * 1996-12-06 1999-11-15 윤종용 광픽업장치
DE19859035A1 (de) * 1998-12-21 2000-06-29 Thomson Brandt Gmbh Gerät zum Lesen oder Schreiben optischer Aufzeichnungsträger mit unterschiedlichen Informationsträgerschichten
US20060087929A1 (en) * 2002-07-01 2006-04-27 Mmri Photonics Ltd. Optical disk drive using one dimensional scanning
CN1295697C (zh) * 2002-07-16 2007-01-17 富士通株式会社 多层光记录介质以及存储装置
JP2005276312A (ja) * 2004-03-24 2005-10-06 Pioneer Electronic Corp 光ピックアップ、および、情報処理装置
JP4037843B2 (ja) 2004-04-15 2008-01-23 Tdk株式会社 受光素子、光ヘッド及び光記録再生装置並びに光記録再生方法
JP4499688B2 (ja) * 2006-05-25 2010-07-07 シャープ株式会社 光情報処理装置
EP2333772A1 (de) 2009-12-07 2011-06-15 Thomson Licensing Verfahren und Vorrichtung zum Lesen von und/oder Schreiben auf einen optischen Aufzeichnungsdatenträger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090031A (en) * 1974-10-21 1978-05-16 Eli S. Jacobs Multi-layered opitcal data records and playback apparatus
US4520472A (en) * 1983-02-07 1985-05-28 Rca Corporation Beam expansion and relay optics for laser diode array
US4705941A (en) * 1983-06-30 1987-11-10 Kabushiki Kaisha Toshiba Apparatus for detecting a focusing state of an optical system
JPS60132616U (ja) * 1984-02-13 1985-09-04 パイオニア株式会社 記録装置
JPS618744A (ja) * 1984-06-22 1986-01-16 Fuji Photo Film Co Ltd 光デイスク装置のフオ−カス誤差検出装置
JPS6310340A (ja) * 1986-07-02 1988-01-16 Nec Corp 複数ビ−ム光ヘツド

Also Published As

Publication number Publication date
EP0372365B1 (de) 1994-07-06
JPH02158930A (ja) 1990-06-19
DE68916623T2 (de) 1995-02-23
US5093821A (en) 1992-03-03
EP0372365A2 (de) 1990-06-13
JPH0677336B2 (ja) 1994-09-28
EP0372365A3 (de) 1991-05-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN

8339 Ceased/non-payment of the annual fee