KR100253716B1 - 광 판독 시스템 - Google Patents

광 판독 시스템 Download PDF

Info

Publication number
KR100253716B1
KR100253716B1 KR1019920014320A KR920014320A KR100253716B1 KR 100253716 B1 KR100253716 B1 KR 100253716B1 KR 1019920014320 A KR1019920014320 A KR 1019920014320A KR 920014320 A KR920014320 A KR 920014320A KR 100253716 B1 KR100253716 B1 KR 100253716B1
Authority
KR
South Korea
Prior art keywords
magnetic
optically active
layer
light beam
substrate
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
KR1019920014320A
Other languages
English (en)
Korean (ko)
Other versions
KR930004963A (ko
Inventor
레위로 장-끌로드
메로 크리스띠앙
Original Assignee
게네비브 부 탄
똥송-쎄 에스 에프
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 게네비브 부 탄, 똥송-쎄 에스 에프 filed Critical 게네비브 부 탄
Publication of KR930004963A publication Critical patent/KR930004963A/ko
Application granted granted Critical
Publication of KR100253716B1 publication Critical patent/KR100253716B1/ko
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
    • G11B11/12—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 optical means
    • G11B11/14—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 optical means with reproducing by magnetic means
    • 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
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • 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
    • G11B7/13—Optical detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Head (AREA)
KR1019920014320A 1991-08-09 1992-08-10 광 판독 시스템 Expired - Fee Related KR100253716B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9110177A FR2680268A1 (fr) 1991-08-09 1991-08-09 Tete de lecture magneto-optique.
FR91-10177 1991-08-09

Publications (2)

Publication Number Publication Date
KR930004963A KR930004963A (ko) 1993-03-23
KR100253716B1 true KR100253716B1 (ko) 2000-05-01

Family

ID=9416096

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920014320A Expired - Fee Related KR100253716B1 (ko) 1991-08-09 1992-08-10 광 판독 시스템

Country Status (6)

Country Link
US (1) US5392181A (enExample)
EP (2) EP0844604A3 (enExample)
JP (1) JP3481262B2 (enExample)
KR (1) KR100253716B1 (enExample)
DE (1) DE69227486T2 (enExample)
FR (1) FR2680268A1 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656723B1 (fr) * 1989-12-28 1995-07-21 Thomson Consumer Electronics Tete de lecture multipiste magneto-optique.
FR2701332B1 (fr) * 1993-02-09 1995-03-10 Thomson Csf Tête de lecture magnéto-optique et appareil de lecture d'enregistrements magnétiques multipistes.
CA2137062A1 (en) * 1993-12-08 1995-06-09 Takumi Shimamori Magneto-optical recording and reading-out method
JP3778364B2 (ja) * 1994-06-17 2006-05-24 タレス 濾光装置およびその液晶プロジェクタへの応用
FR2723243B1 (fr) * 1994-07-26 1996-09-06 Thomson Csf Dispositif d'enregistrement et/ou de lecture de tetes magnetiques et son procede de realisation
TW294810B (enExample) * 1994-09-23 1997-01-01 Philips Electronics Nv
RU2115962C1 (ru) * 1996-04-23 1998-07-20 Гарнетек Лтд. Магнитно-оптическая головка для считывания информации
US6288980B1 (en) * 1996-04-23 2001-09-11 Garnetec Ltd. Magneto-optical head for information reading
FR2750787B1 (fr) * 1996-07-05 1998-11-13 Thomson Csf Tete magnetique matricielle d'enregistrement/lecture et procede de realisation
US6775100B1 (en) * 1997-05-05 2004-08-10 Seagate Technology Llc Laser assisted track width definition and radial control with magnetic recording
DE19846878A1 (de) * 1998-10-13 2000-04-20 Thomson Brandt Gmbh Kopfanordnung zur Multispur-Aufzeichnung mit integrierter Bandführung
WO2000028536A1 (en) * 1998-11-09 2000-05-18 Seiko Instruments Inc. Near-field optical head and production method thereof
FR2786345B1 (fr) 1998-11-24 2001-02-09 Thomson Csf Dispositif de cryptage quantique
FR2797514B3 (fr) * 1999-08-10 2001-10-12 Thomson Csf Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
FR2797710B1 (fr) 1999-08-20 2001-11-09 Thomson Csf Tete de lecture anti-abrasion
US7149173B2 (en) * 2000-10-17 2006-12-12 Thales Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (fr) * 2001-05-15 2003-08-29 Thomson Csf Gyrometre a fibre optique
US6716723B2 (en) * 2002-06-05 2004-04-06 Intel Corporation Wafer cutting using laser marking
EP2452290A4 (en) * 2009-07-09 2014-12-17 Bilcare Technologies Singapore Pte Ltd READER FOR IDENTIFYING A LABEL OR IDENTIFYING OBJECT, AND APPROPRIATE METHOD AND SYSTEM
JP7372498B1 (ja) * 2023-06-01 2023-10-31 京セラ株式会社 アイソレータ、光スイッチ、光送受信器、データセンタ、及びアイソレータの製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4425023A (en) * 1980-01-31 1984-01-10 Canon Kabushiki Kaisha Beam spot scanning device
US4618901A (en) * 1982-07-19 1986-10-21 Nippon Telegraph & Telephone Public Corporation High density magnetic head
JPH0731834B2 (ja) * 1984-04-20 1995-04-10 日本電信電話株式会社 高密度磁気光学再生ヘツド
US4654837A (en) * 1985-09-06 1987-03-31 Datatape Incorporated Magneto-optic transducer with enhanced signal performance
JPH01118105A (ja) * 1987-10-30 1989-05-10 Brother Ind Ltd 薄膜光機能素子
SU1522281A1 (ru) * 1988-02-25 1989-11-15 Симферопольский государственный университет им.М.В.Фрунзе Устройство дл оптического воспроизведени информации с носител магнитной записи
JPH01271946A (ja) * 1988-04-22 1989-10-31 Sony Corp 磁気光再生ヘッド
FR2656723B1 (fr) * 1989-12-28 1995-07-21 Thomson Consumer Electronics Tete de lecture multipiste magneto-optique.

Also Published As

Publication number Publication date
EP0844604A2 (fr) 1998-05-27
EP0527670B1 (fr) 1998-11-04
JP3481262B2 (ja) 2003-12-22
FR2680268B1 (enExample) 1995-04-21
JPH06180883A (ja) 1994-06-28
US5392181A (en) 1995-02-21
EP0527670A1 (fr) 1993-02-17
FR2680268A1 (fr) 1993-02-12
DE69227486D1 (de) 1998-12-10
DE69227486T2 (de) 1999-04-15
KR930004963A (ko) 1993-03-23
EP0844604A3 (fr) 2000-12-06

Similar Documents

Publication Publication Date Title
KR100253716B1 (ko) 광 판독 시스템
EP0836177B1 (en) Optical apparatus
US5235589A (en) Apparatus for recording and reproducing optical information and prism coupler
US6838688B2 (en) Light spot position sensor and displacement measuring device
EP0322714B1 (en) Polarizing optical element and device using the same
EP1278093B9 (en) Outgoing efficiency control device, projection type display apparatus, infrared sensor and non-contact thermometer
US4286838A (en) Compact optical structure with integrated source
US5168485A (en) Device for optically reading optical recording medium
EP0585094A1 (en) An optical integrated circuit having light detector
EP0278406B1 (en) Optical pickup head
EP0486265B1 (en) Polarization detection system
JP3029541B2 (ja) 光ピックアップ装置
JP3034899B2 (ja) エンコーダ
US4059338A (en) Integrated optical waveguide coupler
US6653649B2 (en) Optical measurement and inspection method and apparatus having enhanced optical path difference detection
US5537617A (en) Multi-channel optical head and data storage system
US6697158B2 (en) Measuring apparatus utilizing attenuated total reflection
JPS6251045A (ja) 光学的情報読取装置
JP2000187877A (ja) 光導波路素子および導波路型光ヘッド
JP2000123391A (ja) 光導波路ユニット、およびこれを用いた光学ヘッド
JPH05215574A (ja) 光学式位置検出装置
JP2638039B2 (ja) 光集積回路装置
JPH05101476A (ja) 光磁気情報記録再生装置及びその製造方法
JPS61248244A (ja) 光学式ヘツド装置
JPH0469825A (ja) 光検知器

Legal Events

Date Code Title Description
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

A201 Request for examination
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 6

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8

FPAY Annual fee payment

Payment date: 20080122

Year of fee payment: 9

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 9

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 20090127

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 20090127