NL1007905C2 - Optische dubbelfocus-opneeminrichting. - Google Patents

Optische dubbelfocus-opneeminrichting. Download PDF

Info

Publication number
NL1007905C2
NL1007905C2 NL1007905A NL1007905A NL1007905C2 NL 1007905 C2 NL1007905 C2 NL 1007905C2 NL 1007905 A NL1007905 A NL 1007905A NL 1007905 A NL1007905 A NL 1007905A NL 1007905 C2 NL1007905 C2 NL 1007905C2
Authority
NL
Netherlands
Prior art keywords
optical
disc
beams
wave
incident
Prior art date
Application number
NL1007905A
Other languages
English (en)
Dutch (nl)
Inventor
Keun-Jong Lee
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
Application granted granted Critical
Publication of NL1007905C2 publication Critical patent/NL1007905C2/nl

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)
NL1007905A 1996-12-30 1997-12-24 Optische dubbelfocus-opneeminrichting. NL1007905C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19960077271 1996-12-30
KR1019960077271A KR100197942B1 (ko) 1996-12-30 1996-12-30 듀얼 포커스 광 픽업장치

Publications (1)

Publication Number Publication Date
NL1007905C2 true NL1007905C2 (nl) 1998-07-02

Family

ID=19492501

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1007905A NL1007905C2 (nl) 1996-12-30 1997-12-24 Optische dubbelfocus-opneeminrichting.

Country Status (4)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1226580B1 (en) * 2000-09-25 2005-02-16 Koninklijke Philips Electronics N.V. Optical scanning device
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
EP1109164B1 (en) * 1995-06-05 2005-12-07 Nec Corporation Optical head apparatus for different types of disks
KR970063064A (ko) * 1995-12-22 1997-09-12 배순훈 듀얼 포커스 광 픽-업장치

Also Published As

Publication number Publication date
FR2757990B1 (fr) 1999-09-10
JPH10199019A (ja) 1998-07-31
FR2757990A1 (fr) 1998-07-03
KR100197942B1 (ko) 1999-06-15
KR19980057965A (ko) 1998-09-25

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Legal Events

Date Code Title Description
PD2B A search report has been drawn up
VD1 Lapsed due to non-payment of the annual fee

Effective date: 20030701