DE3679519D1 - Optische kopfeinrichtungen. - Google Patents

Optische kopfeinrichtungen.

Info

Publication number
DE3679519D1
DE3679519D1 DE8686309463T DE3679519T DE3679519D1 DE 3679519 D1 DE3679519 D1 DE 3679519D1 DE 8686309463 T DE8686309463 T DE 8686309463T DE 3679519 T DE3679519 T DE 3679519T DE 3679519 D1 DE3679519 D1 DE 3679519D1
Authority
DE
Germany
Prior art keywords
optical head
head devices
devices
optical
head
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
DE8686309463T
Other languages
English (en)
Inventor
Shinsuke Mitsubishi De Shikama
Eiichi Mitsubishi Denki Toide
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE3679519D1 publication Critical patent/DE3679519D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/08—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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
DE8686309463T 1985-12-04 1986-12-04 Optische kopfeinrichtungen. Expired - Lifetime DE3679519D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60274024A JPH0648543B2 (ja) 1985-12-04 1985-12-04 光学ヘツド装置

Publications (1)

Publication Number Publication Date
DE3679519D1 true DE3679519D1 (de) 1991-07-04

Family

ID=17535894

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686309463T Expired - Lifetime DE3679519D1 (de) 1985-12-04 1986-12-04 Optische kopfeinrichtungen.

Country Status (5)

Country Link
US (1) US4789978A (de)
EP (1) EP0226403B1 (de)
JP (1) JPH0648543B2 (de)
KR (1) KR900006954B1 (de)
DE (1) DE3679519D1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1319194C (en) * 1986-07-28 1993-06-15 Hideaki Satou Focusing error detector and optical data detecting device incorporating the focusing error detector
JPS63268139A (ja) * 1987-04-24 1988-11-04 Alps Electric Co Ltd 光学式ピツクアツプの光学装置
JP2561668B2 (ja) * 1987-06-22 1996-12-11 株式会社日立製作所 ２レ−ザ光ヘッド
JPH07105059B2 (ja) * 1987-08-26 1995-11-13 シャープ株式会社 光学式ピックアップ装置
JPS6453359A (en) * 1987-08-24 1989-03-01 Sharp Kk Optical pickup device
EP0539354B1 (de) * 1987-08-24 1997-06-04 Sharp Kabushiki Kaisha Optische Abtastvorrichtung
JPS6478442A (en) * 1987-09-18 1989-03-23 Sanyo Electric Co Optical pickup device
US5276663A (en) * 1989-04-17 1994-01-04 Canon Kabushiki Kaisha Optical information recording-reproducing apparatus including a condensing lens secured to a lens barrel
JPH02276032A (ja) * 1989-04-17 1990-11-09 Canon Inc 光学ヘッド
JP2655923B2 (ja) * 1990-01-22 1997-09-24 シャープ株式会社 光ヘッド装置
JP2894808B2 (ja) * 1990-07-09 1999-05-24 旭光学工業株式会社 偏光を有する光学系
JPH04251456A (ja) * 1991-01-08 1992-09-07 Fuji Xerox Co Ltd 光磁気ピックアップ装置
EP0578499B1 (de) * 1992-07-10 1999-12-01 Fujitsu Limited Laserdiodenmodul
JP3191200B2 (ja) * 1994-11-10 2001-07-23 コニカ株式会社 光情報記録媒体の記録再生装置
JP3104780B2 (ja) * 1994-12-21 2000-10-30 松下電器産業株式会社 対物レンズ及びそれを用いた光ヘッド装置
US5966362A (en) * 1995-11-02 1999-10-12 Konica Corporation Optical system for recording and reproducing for use in optical information recording medium
JPH09243805A (ja) * 1996-03-13 1997-09-19 Sony Corp レンズ設計方法
JPH1011786A (ja) * 1996-06-21 1998-01-16 Pioneer Electron Corp 情報記録媒体の再生用ピックアップ装置
US6269066B1 (en) * 1997-07-24 2001-07-31 Richard L. Scully Electronically translocatable optical stylet
US6856406B2 (en) 1998-03-06 2005-02-15 Richard L. Scully Ultra small spot generator
US6366547B1 (en) 1998-03-06 2002-04-02 Roland H. Chase Ultra high density disk reader/writer comprising two interferometers
JP4491663B2 (ja) * 2000-03-28 2010-06-30 株式会社トプコン 眼光学特性測定装置
JP2002056561A (ja) * 2000-08-10 2002-02-22 Mitsumi Electric Co Ltd 光学ピックアップ装置
US6791681B2 (en) * 2001-06-14 2004-09-14 Matsushita Electric Industrial Co., Ltd. Apparatus and method for determining existence range of foreign substance
JP2004259328A (ja) * 2003-02-24 2004-09-16 Pioneer Electronic Corp 光ピックアップ並びにこれを備えた情報再生装置
KR20070051767A (ko) 2004-09-27 2007-05-18 소니 가부시끼 가이샤 광 픽업, 광 디스크 장치 및 광 픽업의 제조 방법
JP4989302B2 (ja) * 2007-05-10 2012-08-01 Ｈｏｙａ株式会社 光ピックアップ光学系組付方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133603A (de) * 1974-09-17 1976-03-22 Teac Corp
JPS5922923B2 (ja) * 1976-09-16 1984-05-30 セイコーエプソン株式会社 貼り合せレンズ
JPS606017B2 (ja) * 1979-06-06 1985-02-15 松下電器産業株式会社 光学的記録再生装置
NL8004892A (nl) * 1980-08-29 1982-04-01 Philips Nv Inrichting voor het verwerken van optische informatie en werkwijze voor het vervaardigen van een coma-correctieplaat zoals toegepast in een dergelijke inrichting.
GB2096789B (en) * 1981-03-03 1985-03-13 Canon Kk Optical mechanical scanning system
JPS57201201A (en) * 1981-06-04 1982-12-09 Matsushita Electric Ind Co Ltd Plastic lens
DE3220408C2 (de) * 1982-05-29 1985-05-15 Optische Werke G. Rodenstock, 8000 München Abtastobjektiv
JPS5958414A (ja) * 1982-09-29 1984-04-04 Fujitsu Ltd 半導体レ−ザ光学系
JPS59147306A (ja) * 1983-02-10 1984-08-23 Sony Corp フオ−カス誤差検出装置
JPS6049311A (ja) * 1983-08-29 1985-03-18 Nippon Kogaku Kk <Nikon> 投影レンズ
NL8304212A (nl) * 1983-12-07 1984-10-01 Philips Nv Enkelvoudige collimatorlens met een asferisch oppervlak.
JPS60149941A (ja) * 1984-01-05 1985-08-07 Mitsubishi Electric Corp 光ヘツドの出射光波面収差検知方法および装置
JPS60175225A (ja) * 1984-02-20 1985-09-09 Olympus Optical Co Ltd 光ヘツドの対物レンズ保持装置
US4678288A (en) * 1984-04-27 1987-07-07 Spectra-Physics, Inc. Trifocal lens for a laser instrument
US4733065A (en) * 1984-06-27 1988-03-22 Canon Kabushiki Kaisha Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom

Also Published As

Publication number Publication date
JPH0648543B2 (ja) 1994-06-22
US4789978A (en) 1988-12-06
KR900006954B1 (ko) 1990-09-25
JPS62132247A (ja) 1987-06-15
EP0226403A3 (en) 1989-01-11
EP0226403A2 (de) 1987-06-24
KR870006529A (ko) 1987-07-13
EP0226403B1 (de) 1991-05-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

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