DE68909663T2 - Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers. - Google Patents

Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.

Info

Publication number
DE68909663T2
DE68909663T2 DE89201009T DE68909663T DE68909663T2 DE 68909663 T2 DE68909663 T2 DE 68909663T2 DE 89201009 T DE89201009 T DE 89201009T DE 68909663 T DE68909663 T DE 68909663T DE 68909663 T2 DE68909663 T2 DE 68909663T2
Authority
DE
Germany
Prior art keywords
magneto
arrangement
recording medium
optical
optical recording
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
DE89201009T
Other languages
English (en)
Other versions
DE68909663D1 (de
Inventor
Peter Ferdinand Greve
Albert Smid
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE68909663D1 publication Critical patent/DE68909663D1/de
Publication of DE68909663T2 publication Critical patent/DE68909663T2/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
    • 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
    • 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
    • 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
    • G11B7/1395—Beam splitters or combiners
DE89201009T 1988-04-26 1989-04-20 Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers. Expired - Fee Related DE68909663T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8801075 1988-04-26

Publications (2)

Publication Number Publication Date
DE68909663D1 DE68909663D1 (de) 1993-11-11
DE68909663T2 true DE68909663T2 (de) 1994-04-07

Family

ID=19852202

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89201009T Expired - Fee Related DE68909663T2 (de) 1988-04-26 1989-04-20 Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.

Country Status (5)

Country Link
US (1) US5095476A (de)
EP (1) EP0339722B1 (de)
JP (1) JPH01317250A (de)
KR (1) KR890016526A (de)
DE (1) DE68909663T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022114792B3 (de) 2022-06-13 2023-11-02 Sick Ag Lichtsenderanordnung und optoelektronische sensoranordnung

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DE69015376T2 (de) * 1989-01-20 1995-05-24 Matsushita Electric Ind Co Ltd Optische Kopfanordnung zur Verwendung in einem optischen Scheibensystem.
JPH02265028A (ja) * 1989-04-06 1990-10-29 Mitsubishi Electric Corp 光記録再生装置
JPH0487042A (ja) * 1990-07-31 1992-03-19 Sony Corp 光学ピックアップ装置
JPH04318333A (ja) * 1991-04-17 1992-11-09 Matsushita Electric Ind Co Ltd 光ヘッド装置
US5568315A (en) * 1991-05-28 1996-10-22 Discovision Associates Optical beamsplitter
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
GB2256725B (en) * 1991-06-10 1995-01-18 Alps Electric Co Ltd Polarising light separation element and light receiving optical device using same
US5200946A (en) * 1991-10-02 1993-04-06 Honeywell Inc. Simple magneto-optic rewritable head for roughedized environments
JP3246608B2 (ja) * 1991-11-18 2002-01-15 パイオニア株式会社 光学式情報再生装置
US5350917A (en) * 1991-12-27 1994-09-27 Sony Corporation Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film
EP0558249B1 (de) * 1992-02-28 1998-08-26 Canon Kabushiki Kaisha Gerät zur Aufzeichnung/Wiedergabe von optischen Informationen
US5444677A (en) * 1992-03-03 1995-08-22 Omron Corporation Optical read/write head low angle beamsplitter and coplanar detectors
EP0559452A3 (en) * 1992-03-03 1993-12-08 Omron Tateisi Electronics Co Optical read/write head and optical device for use therewith
JPH05307844A (ja) * 1992-05-01 1993-11-19 Ricoh Co Ltd 速度検出装置および速度制御装置
JPH05307848A (ja) * 1992-05-01 1993-11-19 Ricoh Co Ltd 閉ループ制御システムおよび光ディスク装置のサーボ装置
NL9300774A (nl) * 1992-05-13 1993-12-01 Gold Star Co Optische opneeminrichting.
US5400306A (en) * 1993-06-02 1995-03-21 Hewlett-Packard Company Differential detection assembly for data retrieval from a data storage disk
US5640380A (en) * 1994-08-04 1997-06-17 Matsushita Electric Industrial Co., Ltd. Optical head with a translucent plate to split a light beam
JP2806293B2 (ja) * 1994-10-06 1998-09-30 松下電器産業株式会社 光ピックアップ及びその製造方法
JPH08212612A (ja) * 1994-11-17 1996-08-20 Canon Inc 光学的情報記録再生装置及び該装置用光ヘッド
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
JP3374573B2 (ja) * 1995-02-20 2003-02-04 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
US5796701A (en) * 1995-06-23 1998-08-18 Sony Corporation Optical pickup and opto-magnetic signal reproducing apparatus
JPH1166593A (ja) * 1997-08-19 1999-03-09 Kenwood Corp 記録媒体用光スポット生成装置
US5986995A (en) * 1998-07-06 1999-11-16 Read-Rite Corporation High NA catadioptric focusing device having flat diffractive surfaces
JP3781982B2 (ja) * 2000-12-06 2006-06-07 三菱電機株式会社 半導体レーザ装置
WO2003049089A2 (en) * 2001-12-06 2003-06-12 Koninklijke Philips Electronics N.V. Optical scanning device
DE20205081U1 (de) * 2002-03-30 2002-06-06 Leica Microsystems Mikroskop mit einer Vorrichtung zur Ermittlung der Lichtleistung eines Beleuchtungslichtstrahls
US11963907B2 (en) 2020-09-21 2024-04-23 Amo Development, Llc Multi-use beam sampler in laser beam delivery path of ophthalmic laser system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
US4544269A (en) * 1980-07-25 1985-10-01 Canon Kabushiki Kaisha Device for measuring light incident on an optical system
JPS59186149A (ja) * 1983-04-07 1984-10-22 Mitsubishi Electric Corp 光デイスクピツクアツプ装置
CA1258906A (en) * 1985-04-22 1989-08-29 Hiroshi Oinoue Semiconductor laser apparatus for optical head
JPS621131A (ja) * 1985-06-26 1987-01-07 Matsushita Electric Ind Co Ltd 光学ヘツド
JPS621141A (ja) * 1985-06-27 1987-01-07 Matsushita Electric Ind Co Ltd 光学ヘツド
JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
JPS62117150A (ja) * 1985-11-15 1987-05-28 Alps Electric Co Ltd 光学式ピツクアツプ
DE3583039D1 (de) * 1985-12-17 1991-07-04 Ibm Deutschland Schreib/lesekopf fuer optische platten.
EP0241942B1 (de) * 1986-04-18 1992-03-04 Mitsubishi Denki Kabushiki Kaisha Optischer Kopf
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
JPH0738260B2 (ja) * 1987-04-01 1995-04-26 日本電気株式会社 光磁気用光ヘツド装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022114792B3 (de) 2022-06-13 2023-11-02 Sick Ag Lichtsenderanordnung und optoelektronische sensoranordnung
EP4293395A3 (de) * 2022-06-13 2024-01-03 Sick Ag Optoelektronischer sensor und lichtsenderanordnung

Also Published As

Publication number Publication date
EP0339722A1 (de) 1989-11-02
KR890016526A (ko) 1989-11-29
DE68909663D1 (de) 1993-11-11
JPH01317250A (ja) 1989-12-21
US5095476A (en) 1992-03-10
EP0339722B1 (de) 1993-10-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL

8339 Ceased/non-payment of the annual fee