KR100211820B1 - 광 픽업 장치 - Google Patents

광 픽업 장치 Download PDF

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Publication number
KR100211820B1
KR100211820B1 KR1019960077261A KR19960077261A KR100211820B1 KR 100211820 B1 KR100211820 B1 KR 100211820B1 KR 1019960077261 A KR1019960077261 A KR 1019960077261A KR 19960077261 A KR19960077261 A KR 19960077261A KR 100211820 B1 KR100211820 B1 KR 100211820B1
Authority
KR
South Korea
Prior art keywords
light
prism
rectangular prism
incident
photodetector
Prior art date
Application number
KR1019960077261A
Other languages
English (en)
Korean (ko)
Other versions
KR19980057955A (ko
Inventor
최양오
Original Assignee
전주범
대우전자주식회사
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 전주범, 대우전자주식회사 filed Critical 전주범
Priority to KR1019960077261A priority Critical patent/KR100211820B1/ko
Priority to JP9352581A priority patent/JPH10199000A/ja
Priority to FR9716586A priority patent/FR2757987B1/fr
Priority to NL1007927A priority patent/NL1007927C2/nl
Publication of KR19980057955A publication Critical patent/KR19980057955A/ko
Application granted granted Critical
Publication of KR100211820B1 publication Critical patent/KR100211820B1/ko

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
    • G11B7/1362—Mirrors
    • 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
    • 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
    • G11B7/1372—Lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
KR1019960077261A 1996-12-30 1996-12-30 광 픽업 장치 KR100211820B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960077261A KR100211820B1 (ko) 1996-12-30 1996-12-30 광 픽업 장치
JP9352581A JPH10199000A (ja) 1996-12-30 1997-12-22 光ピックアップシステム
FR9716586A FR2757987B1 (fr) 1996-12-30 1997-12-26 Systeme de lecture optique pour lire des signaux d'informations memorises sur un disque optique
NL1007927A NL1007927C2 (nl) 1996-12-30 1997-12-29 Optisch opneemstelsel voor het lezen van informatiesignalen die zijn opgeslagen op een optische schijf.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960077261A KR100211820B1 (ko) 1996-12-30 1996-12-30 광 픽업 장치

Publications (2)

Publication Number Publication Date
KR19980057955A KR19980057955A (ko) 1998-09-25
KR100211820B1 true KR100211820B1 (ko) 1999-08-02

Family

ID=19492492

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960077261A KR100211820B1 (ko) 1996-12-30 1996-12-30 광 픽업 장치

Country Status (4)

Country Link
JP (1) JPH10199000A (fr)
KR (1) KR100211820B1 (fr)
FR (1) FR2757987B1 (fr)
NL (1) NL1007927C2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5752005A (en) * 1980-08-19 1982-03-27 Olympus Optical Co Ltd Focus detecting method
KR900008380B1 (ko) * 1986-07-01 1990-11-17 미쓰비시덴기 가부시기 가이샤 광학식 헤드장치
JPH0273531A (ja) * 1988-09-09 1990-03-13 Matsushita Electric Ind Co Ltd 光滋気記録再生装置
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
EP0576072B1 (fr) * 1992-06-23 1997-12-03 Koninklijke Philips Electronics N.V. Séparateur de faisceau sensible à la polarisation, méthode pour le fabriquer et système de balayage magnéto-optique l'incorporant
KR100269161B1 (ko) * 1993-02-27 2000-10-16 윤종용 광헤드

Also Published As

Publication number Publication date
NL1007927A1 (nl) 1998-07-01
FR2757987A1 (fr) 1998-07-03
NL1007927C2 (nl) 1998-09-22
KR19980057955A (ko) 1998-09-25
JPH10199000A (ja) 1998-07-31
FR2757987B1 (fr) 1999-12-10

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A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
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