JP3872145B2 - 光ピックアップ装置 - Google Patents

光ピックアップ装置 Download PDF

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Publication number
JP3872145B2
JP3872145B2 JP26433996A JP26433996A JP3872145B2 JP 3872145 B2 JP3872145 B2 JP 3872145B2 JP 26433996 A JP26433996 A JP 26433996A JP 26433996 A JP26433996 A JP 26433996A JP 3872145 B2 JP3872145 B2 JP 3872145B2
Authority
JP
Japan
Prior art keywords
light
region
optical pickup
pickup device
divided
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
JP26433996A
Other languages
English (en)
Japanese (ja)
Other versions
JPH09120572A (ja
Inventor
▲クン▼晧 趙
應鎬 金
長勳 劉
慶和 林
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 JPH09120572A publication Critical patent/JPH09120572A/ja
Application granted granted Critical
Publication of JP3872145B2 publication Critical patent/JP3872145B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G11B7/28—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
    • 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
    • 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)
JP26433996A 1995-10-04 1996-10-04 光ピックアップ装置 Expired - Lifetime JP3872145B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR199533913 1995-10-04
KR1019950033913A KR100200858B1 (ko) 1995-10-04 1995-10-04 광픽업장치

Publications (2)

Publication Number Publication Date
JPH09120572A JPH09120572A (ja) 1997-05-06
JP3872145B2 true JP3872145B2 (ja) 2007-01-24

Family

ID=19429197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26433996A Expired - Lifetime JP3872145B2 (ja) 1995-10-04 1996-10-04 光ピックアップ装置

Country Status (7)

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

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
DE69939160D1 (de) * 1998-12-29 2008-09-04 Koninkl Philips Electronics Nv Optische abtastvorrichtung für zwei verschiedene arten von aufzeichnungsträgern

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
JPH10500526A (ja) * 1995-03-15 1998-01-13 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 記録媒体を光学的に走査する装置
CA2202288C (en) * 1995-08-30 2000-09-26 Chul-Woo Lee Lens device and an optical pickup apparatus using the lens device

Also Published As

Publication number Publication date
KR970023055A (ko) 1997-05-30
NL1004079A1 (nl) 1997-04-08
IT1285223B1 (it) 1998-06-03
JPH09120572A (ja) 1997-05-06
DE19640837A1 (de) 1997-04-10
ITMI961992A1 (it) 1998-03-27
DE19640837B4 (de) 2011-01-27
KR100200858B1 (ko) 1999-06-15
FR2739717B1 (fr) 1999-01-08
FR2739717A1 (fr) 1997-04-11
GB2306045B (en) 1999-08-04
NL1004079C2 (nl) 1998-01-07
GB9620677D0 (en) 1996-11-20
GB2306045A (en) 1997-04-23

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