DE3778406D1 - Optische kopfeinrichtungen fuer plattenspieler. - Google Patents

Optische kopfeinrichtungen fuer plattenspieler.

Info

Publication number
DE3778406D1
DE3778406D1 DE8787301662T DE3778406T DE3778406D1 DE 3778406 D1 DE3778406 D1 DE 3778406D1 DE 8787301662 T DE8787301662 T DE 8787301662T DE 3778406 T DE3778406 T DE 3778406T DE 3778406 D1 DE3778406 D1 DE 3778406D1
Authority
DE
Germany
Prior art keywords
light beam
objective lens
optical head
generating
driving unit
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
DE8787301662T
Other languages
English (en)
Inventor
Yoshimasa C O Patents Div Goda
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
Application granted granted Critical
Publication of DE3778406D1 publication Critical patent/DE3778406D1/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
DE8787301662T 1986-03-15 1987-02-25 Optische kopfeinrichtungen fuer plattenspieler. Expired - Lifetime DE3778406D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61057426A JPH0750526B2 (ja) 1986-03-15 1986-03-15 デイスクプレ−ヤの光学ヘツド装置

Publications (1)

Publication Number Publication Date
DE3778406D1 true DE3778406D1 (de) 1992-05-27

Family

ID=13055326

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787301662T Expired - Lifetime DE3778406D1 (de) 1986-03-15 1987-02-25 Optische kopfeinrichtungen fuer plattenspieler.

Country Status (6)

Country Link
US (1) US4912693A (de)
EP (1) EP0238224B1 (de)
JP (1) JPH0750526B2 (de)
KR (1) KR960000827B1 (de)
AT (1) ATE75338T1 (de)
DE (1) DE3778406D1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61236035A (ja) * 1985-04-09 1986-10-21 Sony Corp 光学ヘツド
JPH0668843B2 (ja) * 1985-08-16 1994-08-31 ソニー株式会社 光学ピツクアツプ装置
DE3831425C2 (de) * 1987-09-16 1998-01-22 Sankyo Seiki Seisakusho Kk Optische Abnehmervorrichtung
JP2529876Y2 (ja) * 1988-03-17 1997-03-19 シャープ株式会社 対物レンズ支持装置
JP2536436Y2 (ja) * 1988-05-25 1997-05-21 シャープ株式会社 対物レンズ駆動装置
KR0153766B1 (ko) * 1988-12-20 1998-12-15 이우에 사또시 광픽업장치
DE3942943A1 (de) * 1989-12-23 1991-06-27 Thomson Brandt Gmbh Optische abtastvorrichtung
JP2728496B2 (ja) * 1989-04-21 1998-03-18 株式会社日立製作所 対物レンズ駆動装置
JP2817301B2 (ja) * 1989-12-28 1998-10-30 松下電器産業株式会社 光ヘッド
KR930009682B1 (ko) * 1991-03-23 1993-10-08 현대전자산업 주식회사 광디스크 구동장치의 광픽업장치
JP2695302B2 (ja) * 1991-05-16 1997-12-24 シャープ株式会社 光ピックアップ駆動装置
JP2641815B2 (ja) * 1991-07-22 1997-08-20 シャープ株式会社 対物レンズ駆動装置
JP3116287B2 (ja) * 1992-02-03 2000-12-11 株式会社リコー 光学式情報記録再生装置
JPH087315A (ja) * 1994-06-21 1996-01-12 Sony Corp 光学ピックアップ
US5640279A (en) * 1996-06-07 1997-06-17 Eastman Kodak Company Beam splitter for optical reading and writing actuator
WO2000030082A1 (fr) * 1998-11-17 2000-05-25 Fujitsu Limited Support optique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064848B (en) * 1979-11-12 1983-09-14 Nippon Telegraph & Telephone Pick up device for use in a video and/or audio information readout apparatus
NL8103305A (nl) * 1981-07-10 1983-02-01 Philips Nv Opto-elektronische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen.
US4571715A (en) * 1982-02-22 1986-02-18 Nippon Telegraph & Telephone Public Corporation Optical head movable in a tracking direction
JPS5940329A (ja) * 1982-08-30 1984-03-06 Sony Corp 光学ピツクアツプ
JPS59198542A (ja) * 1983-04-26 1984-11-10 Sony Corp 光学デイスクプレ−ヤ
JPS60239943A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学ヘツド
US4737946A (en) * 1984-09-03 1988-04-12 Omron Tateisi Electronics Co. Device for processing optical data with improved optical allignment means
JPS61211846A (ja) * 1985-03-18 1986-09-19 Pioneer Electronic Corp 光学式情報記録再生装置におけるピツクアツプ装置

Also Published As

Publication number Publication date
EP0238224B1 (de) 1992-04-22
JPS62214528A (ja) 1987-09-21
US4912693A (en) 1990-03-27
JPH0750526B2 (ja) 1995-05-31
KR870009354A (ko) 1987-10-26
KR960000827B1 (ko) 1996-01-13
ATE75338T1 (de) 1992-05-15
EP0238224A2 (de) 1987-09-23
EP0238224A3 (en) 1989-11-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition