NL1007179C2 - Optisch opneemstelsel. - Google Patents

Optisch opneemstelsel. Download PDF

Info

Publication number
NL1007179C2
NL1007179C2 NL1007179A NL1007179A NL1007179C2 NL 1007179 C2 NL1007179 C2 NL 1007179C2 NL 1007179 A NL1007179 A NL 1007179A NL 1007179 A NL1007179 A NL 1007179A NL 1007179 C2 NL1007179 C2 NL 1007179C2
Authority
NL
Netherlands
Prior art keywords
optical
light beam
recording system
objective lens
optical recording
Prior art date
Application number
NL1007179A
Other languages
English (en)
Dutch (nl)
Other versions
NL1007179A1 (nl
Inventor
Yang-Oh Choi
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
Priority claimed from KR1019960043086A external-priority patent/KR19980023588A/ko
Priority claimed from KR1019960043094A external-priority patent/KR19980023596A/ko
Priority claimed from KR1019960043093A external-priority patent/KR19980023595A/ko
Priority claimed from KR1019960043087A external-priority patent/KR19980023589A/ko
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of NL1007179A1 publication Critical patent/NL1007179A1/xx
Application granted granted Critical
Publication of NL1007179C2 publication Critical patent/NL1007179C2/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
    • G11B7/12—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
    • G11B7/1359—Single prisms
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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)
NL1007179A 1996-09-30 1997-09-30 Optisch opneemstelsel. NL1007179C2 (nl)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR19960043094 1996-09-30
KR1019960043086A KR19980023588A (ko) 1996-09-30 1996-09-30 광 픽-업장치
KR1019960043094A KR19980023596A (ko) 1996-09-30 1996-09-30 광 픽업 장치
KR19960043093 1996-09-30
KR1019960043093A KR19980023595A (ko) 1996-09-30 1996-09-30 광 픽업 장치
KR19960043086 1996-09-30
KR1019960043087A KR19980023589A (ko) 1996-09-30 1996-09-30 광 픽-업장치
KR19960043087 1996-09-30

Publications (2)

Publication Number Publication Date
NL1007179A1 NL1007179A1 (nl) 1998-03-31
NL1007179C2 true NL1007179C2 (nl) 1998-07-08

Family

ID=27483159

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1007179A NL1007179C2 (nl) 1996-09-30 1997-09-30 Optisch opneemstelsel.

Country Status (5)

Country Link
US (1) US5905254A (fr)
JP (1) JPH10112054A (fr)
CN (1) CN1181537A (fr)
FR (1) FR2754096B1 (fr)
NL (1) NL1007179C2 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
EP0225564A3 (en) * 1985-11-30 1988-07-06 Kabushiki Kaisha Toshiba Optical head
KR900008380B1 (ko) * 1986-07-01 1990-11-17 미쓰비시덴기 가부시기 가이샤 광학식 헤드장치
JPH0664750B2 (ja) * 1987-04-27 1994-08-22 パイオニア株式会社 光学ヘツド
JPH04318333A (ja) * 1991-04-17 1992-11-09 Matsushita Electric Ind Co Ltd 光ヘッド装置
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
GB2256725B (en) * 1991-06-10 1995-01-18 Alps Electric Co Ltd Polarising light separation element and light receiving optical device using same
KR950015241A (ko) * 1993-11-16 1995-06-16 배순훈 광픽업의 포커스에러 검출방법 및 그 장치
EP0749119A3 (fr) * 1995-05-31 1997-08-20 Daewoo Electronics Co Ltd Appareil de lecture optique

Also Published As

Publication number Publication date
FR2754096A1 (fr) 1998-04-03
FR2754096B1 (fr) 1999-12-10
NL1007179A1 (nl) 1998-03-31
US5905254A (en) 1999-05-18
JPH10112054A (ja) 1998-04-28
CN1181537A (zh) 1998-05-13

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

Effective date: 20040401