DE69717689D1 - Kondensorlinse für optische Platten - Google Patents

Kondensorlinse für optische Platten

Info

Publication number
DE69717689D1
DE69717689D1 DE69717689T DE69717689T DE69717689D1 DE 69717689 D1 DE69717689 D1 DE 69717689D1 DE 69717689 T DE69717689 T DE 69717689T DE 69717689 T DE69717689 T DE 69717689T DE 69717689 D1 DE69717689 D1 DE 69717689D1
Authority
DE
Germany
Prior art keywords
condenser lens
optical plates
plates
optical
condenser
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
DE69717689T
Other languages
English (en)
Other versions
DE69717689T2 (de
Inventor
Yutaka Yamanaka
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69717689D1 publication Critical patent/DE69717689D1/de
Publication of DE69717689T2 publication Critical patent/DE69717689T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B7/1372—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
    • G11B7/12—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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69717689T 1996-01-19 1997-01-14 Kondensorlinse für optische Platten Expired - Fee Related DE69717689T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8007083A JP2806422B2 (ja) 1996-01-19 1996-01-19 光ディスク用集光レンズ

Publications (2)

Publication Number Publication Date
DE69717689D1 true DE69717689D1 (de) 2003-01-23
DE69717689T2 DE69717689T2 (de) 2003-05-28

Family

ID=11656206

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69717689T Expired - Fee Related DE69717689T2 (de) 1996-01-19 1997-01-14 Kondensorlinse für optische Platten

Country Status (4)

Country Link
US (1) US5835283A (de)
EP (1) EP0785543B1 (de)
JP (1) JP2806422B2 (de)
DE (1) DE69717689T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100238266B1 (ko) * 1996-02-14 2000-02-01 윤종용 광학장치
US6259668B1 (en) 1996-02-14 2001-07-10 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
JP3378154B2 (ja) * 1996-07-16 2003-02-17 シャープ株式会社 光学式記録再生装置
US6222812B1 (en) 1996-08-29 2001-04-24 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate
DE69720641T2 (de) * 1996-10-23 2004-04-08 Konica Corp. Verfahren zur Aufzeichnung und Wiedergabe eines optischen Aufzeichnungsträgers, Objektivlinse sowie Herstellungsmethode der Objektivlinse
JP3743732B2 (ja) * 1997-01-28 2006-02-08 パイオニア株式会社 光ピックアップ装置
JPH112759A (ja) * 1997-06-13 1999-01-06 Pioneer Electron Corp 対物レンズ
JP3827860B2 (ja) * 1998-03-31 2006-09-27 パイオニア株式会社 対物レンズ及び光ピックアップ装置
US6091549A (en) * 1998-04-14 2000-07-18 Siros Technologies, Inc. Method and apparatus for adjustable spherical aberration correction and focusing
TW432225B (en) * 1998-06-03 2001-05-01 Konishiroku Photo Ind Optical pickup apparatus
US6349083B1 (en) * 1998-07-13 2002-02-19 Konica Corporation Near field type optical disk recording reproducing apparatus, optical information recording medium recording reproducing apparatus, pickup apparatus, objective lens
JP2003518637A (ja) 1999-12-24 2003-06-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 光学素子
KR100692160B1 (ko) * 2000-03-31 2007-03-12 아사히 가라스 가부시키가이샤 대물렌즈 및 광학장치

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63285502A (ja) * 1987-05-19 1988-11-22 Sumitomo Electric Ind Ltd レ−ザ−用集光レンズ
NL9000135A (nl) * 1989-01-30 1990-08-16 Seiko Epson Corp Focusseermechanisme en optische kop.
US5096285A (en) * 1990-05-14 1992-03-17 Iolab Corporation Multifocal multizone diffractive ophthalmic lenses
JP2559006B2 (ja) * 1993-01-13 1996-11-27 松下電器産業株式会社 光ヘッド
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
JP3435249B2 (ja) * 1994-03-11 2003-08-11 株式会社東芝 光学ヘッド装置およびレンズ
US5764603A (en) * 1995-04-25 1998-06-09 M.M.R.I. Photonics Ltd. Two-dimensional Random Access Scanner for optical disks
JPH08248307A (ja) * 1995-03-10 1996-09-27 Sony Corp 対物レンズ、光ヘッド装置及び光ディスク再生装置
KR100234249B1 (ko) * 1995-06-07 1999-12-15 윤종용 광픽업용 2위치 결상 대물렌즈
KR970017245A (ko) * 1995-09-29 1997-04-30 배순훈 듀얼 포커스 광 픽업장치

Also Published As

Publication number Publication date
EP0785543B1 (de) 2002-12-11
EP0785543A3 (de) 1997-07-30
JP2806422B2 (ja) 1998-09-30
EP0785543A2 (de) 1997-07-23
DE69717689T2 (de) 2003-05-28
JPH09198699A (ja) 1997-07-31
US5835283A (en) 1998-11-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee