ATE66762T1 - Optische leseeinrichtung fuer optische aufnahmetraeger. - Google Patents

Optische leseeinrichtung fuer optische aufnahmetraeger.

Info

Publication number
ATE66762T1
ATE66762T1 AT87400773T AT87400773T ATE66762T1 AT E66762 T1 ATE66762 T1 AT E66762T1 AT 87400773 T AT87400773 T AT 87400773T AT 87400773 T AT87400773 T AT 87400773T AT E66762 T1 ATE66762 T1 AT E66762T1
Authority
AT
Austria
Prior art keywords
optical
reading device
polarization
refraction index
recording carriers
Prior art date
Application number
AT87400773T
Other languages
English (en)
Inventor
Jean-Claude Lehureau
Bruno Mourey
Henriette Magna
Original Assignee
Thomson Sa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9334165&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE66762(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomson Sa filed Critical Thomson Sa
Application granted granted Critical
Publication of ATE66762T1 publication Critical patent/ATE66762T1/de

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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1833—Diffraction gratings comprising birefringent materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods
    • 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
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Laser Beam Printer (AREA)
  • Optical Communication System (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Holo Graphy (AREA)
AT87400773T 1986-04-11 1987-04-07 Optische leseeinrichtung fuer optische aufnahmetraeger. ATE66762T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8605239A FR2597249B1 (fr) 1986-04-11 1986-04-11 Dispositif de lecture optique de support d'enregistrement optique
EP87400773A EP0241372B1 (de) 1986-04-11 1987-04-07 Optische Leseeinrichtung für optische Aufnahmeträger

Publications (1)

Publication Number Publication Date
ATE66762T1 true ATE66762T1 (de) 1991-09-15

Family

ID=9334165

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87400773T ATE66762T1 (de) 1986-04-11 1987-04-07 Optische leseeinrichtung fuer optische aufnahmetraeger.

Country Status (11)

Country Link
US (1) US5168485A (de)
EP (1) EP0241372B1 (de)
JP (3) JP2589337B2 (de)
KR (1) KR100235125B1 (de)
AT (1) ATE66762T1 (de)
AU (1) AU7167587A (de)
CA (1) CA1301319C (de)
DE (1) DE3772426D1 (de)
ES (1) ES2024528B3 (de)
FR (1) FR2597249B1 (de)
WO (1) WO1987006386A1 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
US4794585A (en) * 1986-05-06 1988-12-27 Lee Wai Hon Optical head having a hologram lens and polarizers for use with magneto-optic medium
DE68928420T2 (de) * 1988-06-23 1998-04-16 Sharp Kk Optische Abtastvorrichtung
EP0390445A3 (de) * 1989-03-27 1992-01-22 Matsushita Electric Industrial Co., Ltd. Optischer Abtastkopf
US5085496A (en) * 1989-03-31 1992-02-04 Sharp Kabushiki Kaisha Optical element and optical pickup device comprising it
FR2646245B1 (fr) * 1989-04-25 1991-06-14 Thomson Csf Dispositif de lecture optique pour support d'enregistrement optique
US5050153A (en) * 1989-06-06 1991-09-17 Wai-Hon Lee Semiconductor laser optical head assembly
DE69031366T2 (de) * 1989-06-26 1998-04-09 Nippon Electric Co Optisches System
JP2616018B2 (ja) * 1989-06-26 1997-06-04 日本電気株式会社 光ヘッド装置
US5210627A (en) * 1990-05-31 1993-05-11 Mitsubishi Denki Kabushiki Kaisha Optical record and reproduction apparatus with liquid crystal panel that rotates light followed by a polarizer or birefringent plate
JP2894808B2 (ja) * 1990-07-09 1999-05-24 旭光学工業株式会社 偏光を有する光学系
DE69326213T2 (de) * 1992-11-17 1999-12-30 Seiko Epson Corp., Tokio/Tokyo Optischer Abtastkopf
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
US5757754A (en) * 1994-06-30 1998-05-26 Matsushita Electric Industrial Co., Ltd. Holographic optical head
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
US6026065A (en) * 1995-03-04 2000-02-15 Lg Electronics Inc. Optical pick-up apparatus capable of reading data irrespective of disc type
US6118586A (en) * 1995-10-03 2000-09-12 Asahi Glass Company Ltd. Optical head device including an optically anisotropic diffraction grating and production method thereof
US6618116B1 (en) 1997-10-02 2003-09-09 Asahi Glass Company, Limited Optical head device and a diffraction element suitable for the device, and a method of manufacturing the diffraction element and the optical head device
FR2786345B1 (fr) 1998-11-24 2001-02-09 Thomson Csf Dispositif de cryptage quantique
US6584059B1 (en) 1999-02-17 2003-06-24 Matsushita Electric Industrial Co., Ltd. Information recording and reproducing apparatus
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
JP2002250809A (ja) * 2001-02-26 2002-09-06 Alps Electric Co Ltd 光学部材およびそれを用いた光ピックアップ
FR2824905B1 (fr) * 2001-05-15 2003-08-29 Thomson Csf Gyrometre a fibre optique
FR2837972B1 (fr) 2002-04-02 2006-07-21 Thales Sa Procede d'asservissement radial pour un dispositif de reproduction d'informations d'un disque optique et dispositif de reproduction mettant en oeuvre ce procede
JP4106981B2 (ja) * 2002-06-28 2008-06-25 旭硝子株式会社 光減衰器
EP1616326A2 (de) * 2003-04-14 2006-01-18 Koninklijke Philips Electronics N.V. Optische abtastvorrichtung
US9938844B2 (en) 2011-10-26 2018-04-10 General Electric Company Metallic stator seal
US10161523B2 (en) 2011-12-23 2018-12-25 General Electric Company Enhanced cloth seal
US9551569B2 (en) * 2014-10-13 2017-01-24 Hermes-Epitek Corporation Apparatus and method for curvature and thin film stress measurement
US11269193B2 (en) * 2017-11-27 2022-03-08 Liqxtal Technology Inc. Optical sensing device and structured light projector

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51100628A (de) * 1975-03-03 1976-09-06 Hitachi Ltd
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
JPS6213Y2 (de) * 1981-03-20 1987-01-06
JPS58130148A (ja) * 1982-01-28 1983-08-03 三重県 額縁等の立体的装飾成形体用成形材料ならびにそれを用いた成形方法
JPS59119548A (ja) * 1982-12-25 1984-07-10 Pioneer Electronic Corp 光学式ピツクアツプ装置
JP2539350B2 (ja) * 1983-12-16 1996-10-02 株式会社日立製作所 光ヘツド装置
JPH069089B2 (ja) * 1985-04-05 1994-02-02 日本電気株式会社 光ヘツド
US4733065A (en) * 1984-06-27 1988-03-22 Canon Kabushiki Kaisha Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom
JPS61178740A (ja) * 1985-02-05 1986-08-11 Canon Inc 光ヘツド装置
CA1257392A (en) * 1985-03-20 1989-07-11 Masayuki Kato Optical pickup with hologram lenses
JPS6226654A (ja) * 1985-07-26 1987-02-04 Nec Corp 光ヘツド
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPS62139146A (ja) * 1985-12-12 1987-06-22 Nec Corp 光ヘツド装置
DE3679648D1 (de) * 1985-12-10 1991-07-11 Nec Corp Optischer kopf mit einem beugungsgitter zum richten von zwei oder mehreren gebeugten lichtstrahlen auf optische detektoren.
JPH0630164B2 (ja) * 1985-12-16 1994-04-20 キヤノン株式会社 光ヘツド装置
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
JPH0514334Y2 (de) * 1986-10-01 1993-04-16
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

Also Published As

Publication number Publication date
KR880701438A (ko) 1988-07-27
DE3772426D1 (de) 1991-10-02
JPS63503102A (ja) 1988-11-10
WO1987006386A1 (fr) 1987-10-22
US5168485A (en) 1992-12-01
JPH0922541A (ja) 1997-01-21
KR100235125B1 (ko) 1999-12-15
CA1301319C (fr) 1992-05-19
FR2597249A1 (fr) 1987-10-16
ES2024528B3 (es) 1992-03-01
JP2589337B2 (ja) 1997-03-12
EP0241372B1 (de) 1991-08-28
JPH10188336A (ja) 1998-07-21
EP0241372A1 (de) 1987-10-14
FR2597249B1 (fr) 1988-06-17
AU7167587A (en) 1987-11-09
JP2935418B2 (ja) 1999-08-16

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