FR2538580B1 - Dispositif de lecture optique - Google Patents

Dispositif de lecture optique

Info

Publication number
FR2538580B1
FR2538580B1 FR8320650A FR8320650A FR2538580B1 FR 2538580 B1 FR2538580 B1 FR 2538580B1 FR 8320650 A FR8320650 A FR 8320650A FR 8320650 A FR8320650 A FR 8320650A FR 2538580 B1 FR2538580 B1 FR 2538580B1
Authority
FR
France
Prior art keywords
light beam
optical reading
reflected
diffraction
reading device
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
Application number
FR8320650A
Other languages
English (en)
Other versions
FR2538580A1 (fr
Inventor
Yoshiyuki Tsukai
Tsukai Et Akihiro Tachibana Yoshiyuki
Akihiro Tachibana
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of FR2538580A1 publication Critical patent/FR2538580A1/fr
Application granted granted Critical
Publication of FR2538580B1 publication Critical patent/FR2538580B1/fr
Expired 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10712—Fixed beam scanning
    • G06K7/10762—Relative movement

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

La présente invention se rapporte à un dispositif de lecture optique comprenant une source d'émission d'un faisceau lumineux 2, un moyen de séparation 28 pour diriger ledit faisceau lumineux émis vers la surface d'un support d'enregistrement 24 et séparer un faisceau réfléchi, renvoyé par la surface du support d'enregistrement dudit faisceau lumineux émis, et un moyen de détection photo-sensible 25 apte à recevoir au moins une partie dudit faisceau réfléchi. Selon l'invention, ce dispositif se caractérise en ce que ledit moyen de séparation 28 a une fonction de diffraction d'un faisceau lumineux incident, et ledit moyen de détection photosensible 25 est placé en un point où il peut recevoir un rayon de diffraction ayant un numéro d'ordre sélectionné dudit faisceau réfléchi. Avantageusement, le moyen de séparation est constitué par un réseau de diffraction ou une lentille holographique. Application aux appareils de lecture optique d'informations enregistrées. (CF DESSIN DANS BOPI)
FR8320650A 1982-12-25 1983-12-23 Dispositif de lecture optique Expired FR2538580B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57233886A JPS59119548A (ja) 1982-12-25 1982-12-25 光学式ピツクアツプ装置

Publications (2)

Publication Number Publication Date
FR2538580A1 FR2538580A1 (fr) 1984-06-29
FR2538580B1 true FR2538580B1 (fr) 1989-10-20

Family

ID=16962096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8320650A Expired FR2538580B1 (fr) 1982-12-25 1983-12-23 Dispositif de lecture optique

Country Status (5)

Country Link
US (1) US4624526A (fr)
JP (1) JPS59119548A (fr)
DE (1) DE3346812A1 (fr)
FR (1) FR2538580B1 (fr)
GB (1) GB2133174B (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2539350B2 (ja) * 1983-12-16 1996-10-02 株式会社日立製作所 光ヘツド装置
JPH0762913B2 (ja) * 1984-08-17 1995-07-05 株式会社日立製作所 自動焦点制御方法
JPS6182344A (ja) * 1984-09-28 1986-04-25 Sony Corp 光ピツクアツプ
JPS61267945A (ja) * 1985-05-21 1986-11-27 Fujitsu Ltd 光学ヘツド
JPS61195530U (fr) * 1985-05-29 1986-12-05
JPS61195534U (fr) * 1985-05-29 1986-12-05
JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
DE3680865D1 (de) * 1985-11-11 1991-09-19 Sharp Kk Optischer kopf.
JPS62145545A (ja) * 1985-12-18 1987-06-29 Sharp Corp ピツクアツプ装置
JPS62124637A (ja) * 1985-11-25 1987-06-05 Mitsubishi Electric Corp 光ピツクアツプ
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.
JPS62139146A (ja) * 1985-12-12 1987-06-22 Nec Corp 光ヘツド装置
FR2597249B1 (fr) * 1986-04-11 1988-06-17 Thomson Csf Dispositif de lecture optique de support d'enregistrement optique
US4757197A (en) * 1986-05-01 1988-07-12 Lee Wai Hon Semiconductor laser and detector device
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
US4731772A (en) * 1986-05-06 1988-03-15 Lee Wai Hon Optical head using hologram lens for both beam splitting and focus error detection functions
JPH0799591B2 (ja) * 1986-07-18 1995-10-25 キヤノン株式会社 光学ヘツド
JPH0827965B2 (ja) * 1986-08-29 1996-03-21 株式会社日立製作所 光学式再生装置
US4789977A (en) * 1986-11-06 1988-12-06 Laser Magnetic Storage International Company Optical data recording device
US4905216A (en) * 1986-12-04 1990-02-27 Pencom International Corporation Method for constructing an optical head by varying a hologram pattern
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
US4834485A (en) * 1988-01-04 1989-05-30 Pencom International Corporation Integrated fiber optics transmitter/receiver device
FR2646245B1 (fr) * 1989-04-25 1991-06-14 Thomson Csf Dispositif de lecture optique pour support d'enregistrement optique
US5245174A (en) * 1990-10-15 1993-09-14 Applied Magnetics Corporation Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
GB2248989B (en) * 1990-10-15 1995-05-24 Applied Magnetics Corp Focus sensing apparatus and method
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
US5657164A (en) * 1991-05-28 1997-08-12 Discovision Associates Optical beamsplitter
US5694385A (en) * 1993-09-24 1997-12-02 Ricoh Comany, Ltd. Optical pickup apparatus
JP2672804B2 (ja) * 1996-01-16 1997-11-05 オリンパス光学工業株式会社 情報読取装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614235A (en) * 1969-07-28 1971-10-19 Charles R Munnerlyn Diffraction grating interferometer
US3732363A (en) * 1971-08-16 1973-05-08 Columbia Broadcasting Syst Inc Information record utilizing diffraction grating and methods of recording and reproducing the information thereof
CA1091966A (fr) * 1976-10-15 1980-12-23 Chiaki Kojima Appareil de lecture de signaux enregistres sur support
JPS53100808A (en) * 1977-02-16 1978-09-02 Olympus Optical Co Ltd Detection for focal point and system therefor
NL7703123A (nl) * 1977-03-23 1978-09-26 Philips Nv Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager.
NL7706753A (nl) * 1977-03-23 1978-12-22 Philips Nv Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager.
NL7805069A (nl) * 1978-05-11 1979-11-13 Philips Nv Inrichting voor puntsgewijze aftasting van een infor- matievlak.
NL7809635A (nl) * 1978-09-22 1980-03-25 Philips Nv Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur.
AU535350B2 (en) * 1979-05-07 1984-03-15 Sony Corporation Inline hologram lens
JPS5647933A (en) * 1979-09-25 1981-04-30 Sony Corp Optical signal head
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
US4440839A (en) * 1981-03-18 1984-04-03 United Technologies Corporation Method of forming laser diffraction grating for beam sampling device
JPS5894142A (ja) * 1981-11-30 1983-06-04 Toshiba Corp 光学ヘツド
US4462095A (en) * 1982-03-19 1984-07-24 Magnetic Peripherals Inc. Moving diffraction grating for an information track centering system for optical recording
US4488042A (en) * 1982-04-15 1984-12-11 Honeywell Inc. Line scan reader/writer by holographic collection
US4497534A (en) * 1983-02-28 1985-02-05 International Business Machines Corporation Holographic optical head

Also Published As

Publication number Publication date
DE3346812C2 (fr) 1989-02-02
FR2538580A1 (fr) 1984-06-29
JPH0570211B2 (fr) 1993-10-04
GB2133174B (en) 1986-11-26
GB2133174A (en) 1984-07-18
US4624526A (en) 1986-11-25
GB8334199D0 (en) 1984-02-01
DE3346812A1 (de) 1984-08-16
JPS59119548A (ja) 1984-07-10

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse