KR100543421B1 - 대물렌즈장치및기록재생장치 - Google Patents

대물렌즈장치및기록재생장치 Download PDF

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Publication number
KR100543421B1
KR100543421B1 KR1019970059258A KR19970059258A KR100543421B1 KR 100543421 B1 KR100543421 B1 KR 100543421B1 KR 1019970059258 A KR1019970059258 A KR 1019970059258A KR 19970059258 A KR19970059258 A KR 19970059258A KR 100543421 B1 KR100543421 B1 KR 100543421B1
Authority
KR
South Korea
Prior art keywords
lens
recording medium
optical axis
objective lens
axis direction
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
KR1019970059258A
Other languages
English (en)
Korean (ko)
Inventor
겐지 야마모토
도시오 와타나베
기요시 오사토
이사오 이치무라
후미사다 마에다
Original Assignee
소니 가부시끼 가이샤
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 소니 가부시끼 가이샤 filed Critical 소니 가부시끼 가이샤
Application granted granted Critical
Publication of KR100543421B1 publication Critical patent/KR100543421B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/12—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
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0927—Electromechanical actuators for lens positioning for focusing only
    • 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
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B7/08—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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0935—Details of the moving parts

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)
KR1019970059258A 1996-11-14 1997-11-11 대물렌즈장치및기록재생장치 Expired - Fee Related KR100543421B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP96-303238 1996-11-14
JP30323896A JP3787925B2 (ja) 1996-11-14 1996-11-14 対物レンズ装置及び記録再生装置

Publications (1)

Publication Number Publication Date
KR100543421B1 true KR100543421B1 (ko) 2006-04-14

Family

ID=17918544

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970059258A Expired - Fee Related KR100543421B1 (ko) 1996-11-14 1997-11-11 대물렌즈장치및기록재생장치

Country Status (4)

Country Link
US (1) US6104691A (https=)
JP (1) JP3787925B2 (https=)
KR (1) KR100543421B1 (https=)
CN (1) CN1135540C (https=)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000040237A (ja) * 1998-07-17 2000-02-08 Sony Corp 光記録再生装置及び光記録再生方法
JP3895471B2 (ja) * 1998-07-17 2007-03-22 富士通株式会社 レンズアクチュエータ
US6359852B1 (en) * 1999-01-08 2002-03-19 Fuji Xerox Co., Ltd. Optical head and optical disk apparatus
US6594204B1 (en) * 1999-03-31 2003-07-15 Sony Corporation Lens holder, method for manufacturing lens holder, metal die for producing lens holder and objective lens device
JP2000322757A (ja) 1999-05-12 2000-11-24 Sharp Corp 光記録再生装置
JP3956547B2 (ja) * 1999-09-07 2007-08-08 ソニー株式会社 光記録装置、光記録及び／又は再生方法
JP2001126305A (ja) * 1999-10-29 2001-05-11 Fujitsu Ltd 光ディスク装置およびそのレンズ調整方法
KR100631494B1 (ko) * 1999-11-02 2006-10-09 엘지전자 주식회사 근접장 기록 재생장치의 광 픽업 헤드
WO2001073776A1 (en) * 2000-03-27 2001-10-04 Koninklijke Philips Electronics N.V. Optical lens system comprising two more than half-spherical lenses
JP2002092926A (ja) * 2000-09-14 2002-03-29 Sony Corp 光ヘッドおよび光ピックアップ
JP2002140831A (ja) 2000-11-02 2002-05-17 Sharp Corp 光ピックアップ装置
JP2002279680A (ja) * 2001-03-21 2002-09-27 Konica Corp 光ピックアップ装置、光ピックアップ装置の集光光学系及び光情報記録再生方法、
JP2002318345A (ja) * 2001-04-23 2002-10-31 Konica Corp 対物レンズ
WO2005066945A1 (en) * 2004-01-12 2005-07-21 Mempile Inc. Lens actuator assembly for optical head
JP4201740B2 (ja) 2004-06-02 2008-12-24 三洋電機株式会社 光ディスク記録方法および光ディスク記録装置
DE112009000292T5 (de) * 2008-04-01 2010-12-30 Tunable Optix Corporation Abtastkopfanordnung für eine optische Platte, die eine elektrisch einstellbare Flüssigkristalllinse verwendet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623441A (ja) * 1985-06-27 1987-01-09 Toshiba Corp 光学式記録再生装置
JPS6242111A (ja) * 1985-08-19 1987-02-24 Minolta Camera Co Ltd 光デイスク用対物レンズ
JPH01284816A (ja) * 1988-05-12 1989-11-16 Olympus Optical Co Ltd 光ピックアップ用対物レンズ
JPH08263867A (ja) * 1995-03-04 1996-10-11 Lg Electron Inc ディスクの種類に無関係に読取可能な光ピックアップ装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100239237B1 (ko) * 1995-09-12 2000-01-15 가나이 쓰도무 광디스크장치 및 그의 광헤드
US5659533A (en) * 1996-07-23 1997-08-19 Sampo Corporation Method of using a single pick-up head to read and store data on discs of different thicknesses and structure of a pick-up head apparatus therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623441A (ja) * 1985-06-27 1987-01-09 Toshiba Corp 光学式記録再生装置
JPS6242111A (ja) * 1985-08-19 1987-02-24 Minolta Camera Co Ltd 光デイスク用対物レンズ
JPH01284816A (ja) * 1988-05-12 1989-11-16 Olympus Optical Co Ltd 光ピックアップ用対物レンズ
JPH08263867A (ja) * 1995-03-04 1996-10-11 Lg Electron Inc ディスクの種類に無関係に読取可能な光ピックアップ装置

Also Published As

Publication number Publication date
JP3787925B2 (ja) 2006-06-21
CN1194433A (zh) 1998-09-30
JPH10142494A (ja) 1998-05-29
US6104691A (en) 2000-08-15
CN1135540C (zh) 2004-01-21

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