DE69830015D1 - Integrierter optischer Abtastkopf - Google Patents

Integrierter optischer Abtastkopf

Info

Publication number
DE69830015D1
DE69830015D1 DE69830015T DE69830015T DE69830015D1 DE 69830015 D1 DE69830015 D1 DE 69830015D1 DE 69830015 T DE69830015 T DE 69830015T DE 69830015 T DE69830015 T DE 69830015T DE 69830015 D1 DE69830015 D1 DE 69830015D1
Authority
DE
Germany
Prior art keywords
optical pickup
integrated optical
integrated
pickup
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 - Lifetime
Application number
DE69830015T
Other languages
English (en)
Other versions
DE69830015T2 (de
DE884789T1 (de
Inventor
Engineer Yoshida
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 DE69830015D1 publication Critical patent/DE69830015D1/de
Publication of DE69830015T2 publication Critical patent/DE69830015T2/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
    • G11B7/1356—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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69830015T 1997-02-25 1998-02-24 Optischer Aufnehmer mit integriert-optischem System Expired - Lifetime DE69830015T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9040517A JPH10241199A (ja) 1997-02-25 1997-02-25 光ピックアップ
JP4051797 1997-02-25

Publications (2)

Publication Number Publication Date
DE69830015D1 true DE69830015D1 (de) 2005-06-09
DE69830015T2 DE69830015T2 (de) 2006-02-23

Family

ID=12582717

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69830015T Expired - Lifetime DE69830015T2 (de) 1997-02-25 1998-02-24 Optischer Aufnehmer mit integriert-optischem System

Country Status (5)

Country Link
US (1) US6201228B1 (de)
EP (1) EP0860818B1 (de)
JP (1) JPH10241199A (de)
KR (1) KR100277157B1 (de)
DE (1) DE69830015T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11191513A (ja) * 1997-12-26 1999-07-13 Matsushita Electric Ind Co Ltd 回路基板、および回路基板におけるインダクタンスまたはキャパシタンスの調整方法
JP3659089B2 (ja) * 1999-10-25 2005-06-15 株式会社日立製作所 光ヘッド及びそれを用いた光学的情報媒体記録再生装置
TW468170B (en) * 2000-05-08 2001-12-11 Ind Tech Res Inst Multiple beam holographic optical pickup head
US7145844B2 (en) * 2002-07-22 2006-12-05 Matsushita Electric Industrial Co., Ltd. Optical head with adjustable beam shaping element
JP2007103775A (ja) 2005-10-06 2007-04-19 Matsushita Electric Ind Co Ltd 可変抵抗器
US8024748B1 (en) 2009-09-09 2011-09-20 Western Digital Technologies, Inc. Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05135420A (ja) 1991-11-13 1993-06-01 Sharp Corp 光磁気記録再生装置における光ピツクアツプ装置
JP2638403B2 (ja) 1992-07-30 1997-08-06 松下電器産業株式会社 光ピックアップ
JPH06111334A (ja) * 1992-09-24 1994-04-22 Sony Corp 円盤状記録媒体用の記録及び／又は再生装置、光検出器及び光ヘッド
JP3335212B2 (ja) 1993-04-07 2002-10-15 オリンパス光学工業株式会社 光ヘッド
JP3319094B2 (ja) 1993-11-09 2002-08-26 松下電器産業株式会社 光ピックアップ及び光ガイド部材
JP3029541B2 (ja) 1994-12-19 2000-04-04 シャープ株式会社 光ピックアップ装置
JPH08287511A (ja) 1995-04-18 1996-11-01 Sony Corp 光ピックアップ装置及び光検出装置

Also Published As

Publication number Publication date
KR100277157B1 (ko) 2001-01-15
EP0860818A2 (de) 1998-08-26
DE69830015T2 (de) 2006-02-23
US6201228B1 (en) 2001-03-13
KR19980071641A (ko) 1998-10-26
EP0860818B1 (de) 2005-05-04
JPH10241199A (ja) 1998-09-11
EP0860818A3 (de) 1998-11-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition