JP3787925B2 - 対物レンズ装置及び記録再生装置 - Google Patents

対物レンズ装置及び記録再生装置 Download PDF

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Publication number
JP3787925B2
JP3787925B2 JP30323896A JP30323896A JP3787925B2 JP 3787925 B2 JP3787925 B2 JP 3787925B2 JP 30323896 A JP30323896 A JP 30323896A JP 30323896 A JP30323896 A JP 30323896A JP 3787925 B2 JP3787925 B2 JP 3787925B2
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JP
Japan
Prior art keywords
lens
light
diaphragm
objective lens
recording medium
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
JP30323896A
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English (en)
Japanese (ja)
Other versions
JPH10142494A5 (enExample
JPH10142494A (ja
Inventor
健二 山本
功 市村
史貞 前田
俊夫 渡辺
潔 大里
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP30323896A priority Critical patent/JP3787925B2/ja
Priority to US08/964,011 priority patent/US6104691A/en
Priority to KR1019970059258A priority patent/KR100543421B1/ko
Priority to CNB971264287A priority patent/CN1135540C/zh
Publication of JPH10142494A publication Critical patent/JPH10142494A/ja
Publication of JPH10142494A5 publication Critical patent/JPH10142494A5/ja
Application granted granted Critical
Publication of JP3787925B2 publication Critical patent/JP3787925B2/ja
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)
JP30323896A 1996-11-14 1996-11-14 対物レンズ装置及び記録再生装置 Expired - Fee Related JP3787925B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP30323896A JP3787925B2 (ja) 1996-11-14 1996-11-14 対物レンズ装置及び記録再生装置
US08/964,011 US6104691A (en) 1996-11-14 1997-11-04 Objective lens unit and recording/reproduction apparatus
KR1019970059258A KR100543421B1 (ko) 1996-11-14 1997-11-11 대물렌즈장치및기록재생장치
CNB971264287A CN1135540C (zh) 1996-11-14 1997-11-14 物镜部件和记录/重现装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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 (3)

Publication Number Publication Date
JPH10142494A JPH10142494A (ja) 1998-05-29
JPH10142494A5 JPH10142494A5 (enExample) 2004-11-11
JP3787925B2 true JP3787925B2 (ja) 2006-06-21

Family

ID=17918544

Family Applications (1)

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

Country Status (4)

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

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
ATE411597T1 (de) * 2000-03-27 2008-10-15 Koninkl Philips Electronics Nv Optisches linsensystem mit zwei mehr als halbkugelförmigen linsen
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

Family Cites Families (6)

* 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
US6026065A (en) * 1995-03-04 2000-02-15 Lg Electronics Inc. Optical pick-up apparatus capable of reading data irrespective of disc type
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

Also Published As

Publication number Publication date
JPH10142494A (ja) 1998-05-29
US6104691A (en) 2000-08-15
CN1135540C (zh) 2004-01-21
KR100543421B1 (ko) 2006-04-14
CN1194433A (zh) 1998-09-30

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