DE69225038D1 - Optisches Abtastgerät - Google Patents

Optisches Abtastgerät

Info

Publication number
DE69225038D1
DE69225038D1 DE69225038T DE69225038T DE69225038D1 DE 69225038 D1 DE69225038 D1 DE 69225038D1 DE 69225038 T DE69225038 T DE 69225038T DE 69225038 T DE69225038 T DE 69225038T DE 69225038 D1 DE69225038 D1 DE 69225038D1
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
DE69225038T
Other languages
English (en)
Other versions
DE69225038T2 (de
Inventor
Satoshi Hineno
Yoshito Asoma
Nobuhiko Ando
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of DE69225038D1 publication Critical patent/DE69225038D1/de
Application granted granted Critical
Publication of DE69225038T2 publication Critical patent/DE69225038T2/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
    • G11B7/1356—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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69225038T 1991-10-18 1992-10-16 Optisches Abtastgerät Expired - Fee Related DE69225038T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3297634A JPH05109143A (ja) 1991-10-18 1991-10-18 光学ピツクアツプ装置

Publications (2)

Publication Number Publication Date
DE69225038D1 true DE69225038D1 (de) 1998-05-14
DE69225038T2 DE69225038T2 (de) 1998-07-30

Family

ID=17849118

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69225038T Expired - Fee Related DE69225038T2 (de) 1991-10-18 1992-10-16 Optisches Abtastgerät

Country Status (6)

Country Link
US (1) US5428596A (de)
EP (1) EP0537787B1 (de)
JP (1) JPH05109143A (de)
KR (1) KR100299201B1 (de)
DE (1) DE69225038T2 (de)
HK (1) HK1010071A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06176426A (ja) * 1992-12-08 1994-06-24 Sony Corp 光学ピックアップ装置
US6185166B1 (en) 1993-06-21 2001-02-06 Fujitsu Limited Optical information recording/reproducing apparatus
JP3541893B2 (ja) * 1993-08-06 2004-07-14 ソニー株式会社 光磁気記録媒体再生装置
KR970004210B1 (ko) * 1994-06-10 1997-03-26 엘지전자 주식회사 광픽업 장치
JPH08287510A (ja) * 1995-04-18 1996-11-01 Sony Corp 光ピックアップ装置
JPH08321088A (ja) * 1995-05-25 1996-12-03 Sony Corp 光学ピックアップ
DE19645110A1 (de) * 1996-11-01 1998-05-07 Thomson Brandt Gmbh Aufzeichnungs- oder Wiedergabegerät und Verfahren zum Erkennen eines Fokussierungszustands
JP3626003B2 (ja) * 1997-10-06 2005-03-02 富士通株式会社 光学的情報記憶装置
AU2003243979A1 (en) * 2002-06-28 2004-01-19 Victor Company Of Japan, Limited Optical pickup
JP2009205775A (ja) * 2008-02-29 2009-09-10 Sanyo Electric Co Ltd 光ピックアップ装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60151855A (ja) * 1984-01-20 1985-08-09 Olympus Optical Co Ltd 光磁気ピツクアツプ装置
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
US5189651A (en) * 1986-05-12 1993-02-23 Pioneer Electronic Corporation Optical system in magneto-optical recording and reproducing device
JPH0677351B2 (ja) * 1986-11-15 1994-09-28 ソニー株式会社 光学ピツクアツプ装置
US4873678A (en) * 1986-12-10 1989-10-10 Hitachi, Ltd. Optical head and optical information processor using the same
JPH0436655Y2 (de) * 1986-12-12 1992-08-28
JPH0231337A (ja) * 1988-07-21 1990-02-01 Mitsubishi Electric Corp 焦点誤差検出装置
JPH02273353A (ja) * 1989-04-14 1990-11-07 Nec Corp 光磁気ヘッド信号検出器
JPH0384745A (ja) * 1989-08-29 1991-04-10 Canon Inc 光学ヘッド
JP2902415B2 (ja) * 1989-09-14 1999-06-07 シャープ株式会社 光学ヘッド
JPH03171453A (ja) * 1989-11-29 1991-07-24 Sony Corp 光磁気信号再生方法
US5272685A (en) * 1989-12-22 1993-12-21 Kabushiki Kaisha Toshiba Optical system for an information processing apparatus
EP0439876A1 (de) * 1990-01-29 1991-08-07 Hitachi Maxell Ltd. Optischer Kopf mit doppeltem Strahlteiler

Also Published As

Publication number Publication date
KR930008762A (ko) 1993-05-21
JPH05109143A (ja) 1993-04-30
HK1010071A1 (en) 1999-06-11
EP0537787B1 (de) 1998-04-08
US5428596A (en) 1995-06-27
EP0537787A2 (de) 1993-04-21
KR100299201B1 (ko) 2001-10-22
DE69225038T2 (de) 1998-07-30
EP0537787A3 (en) 1993-09-08

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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