FR2739717B1 - Dispositif de lecture optique - Google Patents

Dispositif de lecture optique

Info

Publication number
FR2739717B1
FR2739717B1 FR9611994A FR9611994A FR2739717B1 FR 2739717 B1 FR2739717 B1 FR 2739717B1 FR 9611994 A FR9611994 A FR 9611994A FR 9611994 A FR9611994 A FR 9611994A FR 2739717 B1 FR2739717 B1 FR 2739717B1
Authority
FR
France
Prior art keywords
reading device
optical reading
optical
reading
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 - Lifetime
Application number
FR9611994A
Other languages
English (en)
Other versions
FR2739717A1 (fr
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of FR2739717A1 publication Critical patent/FR2739717A1/fr
Application granted granted Critical
Publication of FR2739717B1 publication Critical patent/FR2739717B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Glass Compositions (AREA)
  • Holo Graphy (AREA)
FR9611994A 1995-10-04 1996-10-02 Dispositif de lecture optique Expired - Lifetime FR2739717B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950033913A KR100200858B1 (ko) 1995-10-04 1995-10-04 광픽업장치

Publications (2)

Publication Number Publication Date
FR2739717A1 FR2739717A1 (fr) 1997-04-11
FR2739717B1 true FR2739717B1 (fr) 1999-01-08

Family

ID=19429197

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9611994A Expired - Lifetime FR2739717B1 (fr) 1995-10-04 1996-10-02 Dispositif de lecture optique

Country Status (7)

Country Link
JP (1) JP3872145B2 (fr)
KR (1) KR100200858B1 (fr)
DE (1) DE19640837B4 (fr)
FR (1) FR2739717B1 (fr)
GB (1) GB2306045B (fr)
IT (1) IT1285223B1 (fr)
NL (1) NL1004079C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09219036A (ja) * 1996-02-15 1997-08-19 Nec Corp 光ヘッド装置
WO2000039791A1 (fr) * 1998-12-29 2000-07-06 Koninklijke Philips Electronics N.V. Dispositif de balayage optique pour deux types de support d'enregistrement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185230A (ja) * 1984-03-02 1985-09-20 Pioneer Electronic Corp 焦点誤差検出装置
US5281797A (en) * 1991-12-26 1994-01-25 Hitachi, Ltd. Short wavelength optical disk head having a changeable aperture
US5349592A (en) * 1992-02-27 1994-09-20 Kabushiki Kaisha Toshiba Super-resolution optical element for use in image forming apparatus
JP2532818B2 (ja) * 1993-02-01 1996-09-11 松下電器産業株式会社 対物レンズおよび光ヘッド装置
JPH06295467A (ja) * 1993-04-01 1994-10-21 Nippon Columbia Co Ltd 光ピックアップ装置
JP3548259B2 (ja) * 1994-04-07 2004-07-28 ペンタックス株式会社 光磁気ヘッド装置
EP0763236B1 (fr) * 1995-03-15 2000-06-07 Koninklijke Philips Electronics N.V. Dispositif pour la lecture optique d'un support d'enregistrement
CN1082222C (zh) * 1995-08-30 2002-04-03 三星电子株式会社 物镜装置及使用该物镜装置的光学头设备

Also Published As

Publication number Publication date
GB9620677D0 (en) 1996-11-20
DE19640837B4 (de) 2011-01-27
DE19640837A1 (de) 1997-04-10
JP3872145B2 (ja) 2007-01-24
KR100200858B1 (ko) 1999-06-15
GB2306045A (en) 1997-04-23
ITMI961992A1 (it) 1998-03-27
NL1004079A1 (nl) 1997-04-08
IT1285223B1 (it) 1998-06-03
GB2306045B (en) 1999-08-04
JPH09120572A (ja) 1997-05-06
KR970023055A (ko) 1997-05-30
FR2739717A1 (fr) 1997-04-11
NL1004079C2 (nl) 1998-01-07

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