FR2757990B1 - Appareil d'enregistrement-lecture optique a double foyer - Google Patents

Appareil d'enregistrement-lecture optique a double foyer

Info

Publication number
FR2757990B1
FR2757990B1 FR9716637A FR9716637A FR2757990B1 FR 2757990 B1 FR2757990 B1 FR 2757990B1 FR 9716637 A FR9716637 A FR 9716637A FR 9716637 A FR9716637 A FR 9716637A FR 2757990 B1 FR2757990 B1 FR 2757990B1
Authority
FR
France
Prior art keywords
optical recording
playing apparatus
focus optical
dual focus
dual
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
FR9716637A
Other languages
English (en)
Other versions
FR2757990A1 (fr
Inventor
Keun Jong Lee
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo 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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of FR2757990A1 publication Critical patent/FR2757990A1/fr
Application granted granted Critical
Publication of FR2757990B1 publication Critical patent/FR2757990B1/fr
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
    • 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
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/1395—Beam splitters or combiners
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
FR9716637A 1996-12-30 1997-12-29 Appareil d'enregistrement-lecture optique a double foyer Expired - Fee Related FR2757990B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960077271A KR100197942B1 (ko) 1996-12-30 1996-12-30 듀얼 포커스 광 픽업장치

Publications (2)

Publication Number Publication Date
FR2757990A1 FR2757990A1 (fr) 1998-07-03
FR2757990B1 true FR2757990B1 (fr) 1999-09-10

Family

ID=19492501

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9716637A Expired - Fee Related FR2757990B1 (fr) 1996-12-30 1997-12-29 Appareil d'enregistrement-lecture optique a double foyer

Country Status (4)

Country Link
JP (1) JPH10199019A (fr)
KR (1) KR100197942B1 (fr)
FR (1) FR2757990B1 (fr)
NL (1) NL1007905C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004510281A (ja) * 2000-09-25 2004-04-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 光走査デバイス
KR100421457B1 (ko) * 2001-07-27 2004-03-09 삼성전기주식회사 광 픽업장치
KR20030067165A (ko) * 2002-02-07 2003-08-14 삼성전기주식회사 광 픽업장치
KR100464426B1 (ko) * 2002-08-08 2005-01-03 삼성전자주식회사 이형 렌즈 및 이를 채용한 광픽업

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5671207A (en) * 1995-02-23 1997-09-23 Lg Electronics, Inc. Optical pickup apparatus for performing multi-focusing
JP2993391B2 (ja) * 1995-03-03 1999-12-20 日本ビクター株式会社 光ピックアップ
JP3471960B2 (ja) * 1995-03-15 2003-12-02 パイオニア株式会社 ピックアップ装置
DE69635559T2 (de) * 1995-06-05 2006-06-14 Nec Corp Optische Wiedergabekopfvorrichtung für verschiedene Plattentypen
KR970063064A (ko) * 1995-12-22 1997-09-12 배순훈 듀얼 포커스 광 픽-업장치

Also Published As

Publication number Publication date
KR100197942B1 (ko) 1999-06-15
KR19980057965A (ko) 1998-09-25
JPH10199019A (ja) 1998-07-31
FR2757990A1 (fr) 1998-07-03
NL1007905C2 (nl) 1998-07-02

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Legal Events

Date Code Title Description
ST Notification of lapse