DE3778323D1 - Optischer signalabnehmer. - Google Patents

Optischer signalabnehmer.

Info

Publication number
DE3778323D1
DE3778323D1 DE8787116814T DE3778323T DE3778323D1 DE 3778323 D1 DE3778323 D1 DE 3778323D1 DE 8787116814 T DE8787116814 T DE 8787116814T DE 3778323 T DE3778323 T DE 3778323T DE 3778323 D1 DE3778323 D1 DE 3778323D1
Authority
DE
Germany
Prior art keywords
optical signal
signal collector
collector
optical
signal
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
DE8787116814T
Other languages
English (en)
Inventor
Hiroshi Yoshimatsu
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
Application granted granted Critical
Publication of DE3778323D1 publication Critical patent/DE3778323D1/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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • 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
DE8787116814T 1986-11-15 1987-11-13 Optischer signalabnehmer. Expired - Lifetime DE3778323D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61272416A JPH0677351B2 (ja) 1986-11-15 1986-11-15 光学ピツクアツプ装置

Publications (1)

Publication Number Publication Date
DE3778323D1 true DE3778323D1 (de) 1992-05-21

Family

ID=17513602

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787116814T Expired - Lifetime DE3778323D1 (de) 1986-11-15 1987-11-13 Optischer signalabnehmer.

Country Status (5)

Country Link
US (1) US4771414A (de)
EP (1) EP0270874B1 (de)
JP (1) JPH0677351B2 (de)
KR (1) KR960000828B1 (de)
DE (1) DE3778323D1 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777038B2 (ja) * 1986-12-25 1995-08-16 ソニー株式会社 光学ピツクアツプ装置
US4951274A (en) * 1987-01-23 1990-08-21 Nec Corporation Magneto-optical head capable of separating beams for reading recorded information and servo information by use of one optical element
JPH0789415B2 (ja) * 1987-01-29 1995-09-27 日本電気株式会社 光学ヘツド
US4973836A (en) * 1987-03-31 1990-11-27 Canon Kabushiki Kaisha Optical pickup device including a beam splitter having an inclined plane
JPH01138627A (ja) * 1987-11-26 1989-05-31 Ricoh Co Ltd 光デイスク装置
EP0395832B1 (de) * 1989-05-02 1995-04-12 Pioneer Electronic Corporation Optischer Kopf
JP2902415B2 (ja) * 1989-09-14 1999-06-07 シャープ株式会社 光学ヘッド
JPH03116567A (ja) * 1989-09-29 1991-05-17 Canon Inc 光磁気情報再生装置
FR2657190B1 (fr) * 1990-01-18 1995-07-21 Thomson Csf Dispositif de lecture de segments oblongs d'un support en defilement.
JPH04289529A (ja) * 1991-01-09 1992-10-14 Sony Corp 記録可能ディスク用光学ピックアップ装置及びダイクロイックミラー
EP0974965B1 (de) * 1991-02-18 2003-04-23 Sony Corporation Plattenkassette und Plattenaufzeichnungs -und/oder wiedergabegerät
JP2793067B2 (ja) * 1991-04-04 1998-09-03 株式会社日立製作所 光ヘッド
JPH05109143A (ja) * 1991-10-18 1993-04-30 Sony Corp 光学ピツクアツプ装置
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
JP3362896B2 (ja) * 1993-01-25 2003-01-07 ソニー株式会社 光ピックアップ及び光ディスク装置
US5550798A (en) * 1993-04-13 1996-08-27 Sony Corporation Enhanced optical beam splitter to increase the kerr rotation angle
DE4322149A1 (de) * 1993-06-21 1994-12-22 Fujitsu Ltd Optische Informationsaufzeichnungs-/Wiedergabevorrichtung
US6185166B1 (en) 1993-06-21 2001-02-06 Fujitsu Limited Optical information recording/reproducing apparatus
US5742572A (en) * 1993-06-21 1998-04-21 Fujitsu Limited Optical information recording/reproducing apparatus which detects focal error
KR950013702B1 (ko) * 1993-07-15 1995-11-13 엘지전자주식회사 광자기 디스크의 광픽업 장치
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
US5694385A (en) * 1993-09-24 1997-12-02 Ricoh Comany, Ltd. Optical pickup apparatus
US5508992A (en) * 1993-09-29 1996-04-16 Tdk Corporation Magneto-optical recording/reproducing pickup head with a diffraction grating and a wollaston prism
JP3318636B2 (ja) * 1994-03-31 2002-08-26 ソニー株式会社 サーボ装置、光ディスク再生装置
US5541906A (en) * 1994-07-29 1996-07-30 Olympus Optical Co., Ltd. Optical head for magneto-optical record medium
EP0740294A1 (de) * 1995-04-26 1996-10-30 Matsushita Electric Industrial Co., Ltd. Optischer Kopf
US5908873A (en) * 1995-12-20 1999-06-01 Borden Chemicals, Inc. Peelable bonded ribbon matrix material; optical fiber bonded ribbon arrays containing same; and process for preparing said optical fiber bonded ribbon arrays
DE19645110A1 (de) * 1996-11-01 1998-05-07 Thomson Brandt Gmbh Aufzeichnungs- oder Wiedergabegerät und Verfahren zum Erkennen eines Fokussierungszustands
TW492000B (en) * 2000-02-04 2002-06-21 Matsushita Electric Ind Co Ltd Optical pickup head
TW509908B (en) * 2001-01-12 2002-11-11 Ind Tech Res Inst Pickup structure and method for accessing signals of the same
JP2003083812A (ja) * 2001-09-10 2003-03-19 Ando Electric Co Ltd 解析中の光を出力可能な偏波アナライザ装置
DE10214775A1 (de) * 2002-04-03 2003-10-16 Thomson Brandt Gmbh Vorrichtung zur Korrektur von Signalmodulationen
KR100503007B1 (ko) * 2003-06-24 2005-07-21 삼성전기주식회사 광픽업용 액추에이터의 부공진 측정 장치
KR102044864B1 (ko) * 2012-12-13 2019-12-06 삼성디스플레이 주식회사 레이저 패터닝 검사장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323160A1 (fr) * 1975-09-03 1977-04-01 Thomson Brandt Dispositif optique de projection et lecteur optique comportant un tel dispositif
US4198123A (en) * 1977-03-23 1980-04-15 Baxter Travenol Laboratories, Inc. Optical scrambler for depolarizing light
JPS6053863A (ja) * 1983-09-05 1985-03-27 Sony Corp 磁気記録媒体の磁化方向検出装置
US4638470A (en) * 1984-05-09 1987-01-20 Xerox Corporation Apparatus using beam splitter cube with specific characteristics for reading information recorded in a magneto-optic medium
KR920007294B1 (ko) * 1984-06-29 1992-08-29 가부시끼가이샤 히다찌세이사꾸쇼 광자기 정보 기록장치의 광헤드
JPS61177655A (ja) * 1985-01-31 1986-08-09 Olympus Optical Co Ltd 光磁気差動再生装置

Also Published As

Publication number Publication date
EP0270874B1 (de) 1992-04-15
US4771414A (en) 1988-09-13
KR960000828B1 (ko) 1996-01-13
EP0270874A2 (de) 1988-06-15
JPH0677351B2 (ja) 1994-09-28
EP0270874A3 (en) 1989-02-01
JPS63127436A (ja) 1988-05-31
KR880006659A (ko) 1988-07-23

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Legal Events

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8364 No opposition during term of opposition