DE69315488D1 - Integrierte optische Vorrichtung zur Kontrolle des Fokus und der Position eines Bildes - Google Patents

Integrierte optische Vorrichtung zur Kontrolle des Fokus und der Position eines Bildes

Info

Publication number
DE69315488D1
DE69315488D1 DE69315488T DE69315488T DE69315488D1 DE 69315488 D1 DE69315488 D1 DE 69315488D1 DE 69315488 T DE69315488 T DE 69315488T DE 69315488 T DE69315488 T DE 69315488T DE 69315488 D1 DE69315488 D1 DE 69315488D1
Authority
DE
Germany
Prior art keywords
focus
image
control
optical device
integrated 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
DE69315488T
Other languages
English (en)
Other versions
DE69315488T2 (de
Inventor
Pierre Labeye
Serge Valette
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Application granted granted Critical
Publication of DE69315488D1 publication Critical patent/DE69315488D1/de
Publication of DE69315488T2 publication Critical patent/DE69315488T2/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
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69315488T 1992-06-22 1993-06-17 Integrierte optische Vorrichtung zur Kontrolle des Fokus und der Position eines Bildes Expired - Fee Related DE69315488T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9207570A FR2692683B1 (fr) 1992-06-22 1992-06-22 Dispositif en optique intégrée pour le contrôle de la focalisation et de la position d'une image.

Publications (2)

Publication Number Publication Date
DE69315488D1 true DE69315488D1 (de) 1998-01-15
DE69315488T2 DE69315488T2 (de) 1998-06-04

Family

ID=9431002

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69315488T Expired - Fee Related DE69315488T2 (de) 1992-06-22 1993-06-17 Integrierte optische Vorrichtung zur Kontrolle des Fokus und der Position eines Bildes

Country Status (3)

Country Link
EP (1) EP0576331B1 (de)
DE (1) DE69315488T2 (de)
FR (1) FR2692683B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719387B1 (fr) * 1994-04-28 1996-05-24 Commissariat Energie Atomique Dispositif de contrôle de la position et/ou de la focalisation d'un faisceau lumineux focalisé.
CA2223380A1 (en) 1996-12-17 1998-06-17 Fiberstars Incorporated Acrylic flexible light pipe of improved photo-thermal stability

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606921B1 (fr) * 1986-11-18 1989-01-13 Commissariat Energie Atomique Tete de lecture en optique integree pour la lecture d'informations enregistrees sur un support magnetique

Also Published As

Publication number Publication date
EP0576331A1 (de) 1993-12-29
DE69315488T2 (de) 1998-06-04
EP0576331B1 (de) 1997-12-03
FR2692683A1 (fr) 1993-12-24
FR2692683B1 (fr) 1994-08-19

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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