DE3382020D1 - Kopf zum optischen aufzeichnen und wiedergeben. - Google Patents

Kopf zum optischen aufzeichnen und wiedergeben.

Info

Publication number
DE3382020D1
DE3382020D1 DE19833382020 DE3382020A DE3382020D1 DE 3382020 D1 DE3382020 D1 DE 3382020D1 DE 19833382020 DE19833382020 DE 19833382020 DE 3382020 A DE3382020 A DE 3382020A DE 3382020 D1 DE3382020 D1 DE 3382020D1
Authority
DE
Germany
Prior art keywords
optical recording
playback head
playback
head
recording
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
DE19833382020
Other languages
English (en)
Inventor
Shunji Ohara
Tomio Yoshida
Isao Satoh
Kenji Koishi
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.)
Panasonic Corp
Original Assignee
Panasonic 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
Priority to JP57123809A priority Critical patent/JPS5914147A/ja
Priority to JP57123807A priority patent/JPS5914146A/ja
Application filed by Panasonic Corp filed Critical Panasonic Corp
Application granted granted Critical
Publication of DE3382020D1 publication Critical patent/DE3382020D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
DE19833382020 1982-07-15 1983-07-13 Kopf zum optischen aufzeichnen und wiedergeben. Expired - Fee Related DE3382020D1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57123809A JPS5914147A (en) 1982-07-15 1982-07-15 Optical beam synthesizer
JP57123807A JPS5914146A (en) 1982-07-15 1982-07-15 Optical disk device

Publications (1)

Publication Number Publication Date
DE3382020D1 true DE3382020D1 (de) 1991-01-10

Family

ID=26460630

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833382020 Expired - Fee Related DE3382020D1 (de) 1982-07-15 1983-07-13 Kopf zum optischen aufzeichnen und wiedergeben.

Country Status (3)

Country Link
US (2) US4564931A (de)
EP (1) EP0099123B1 (de)
DE (1) DE3382020D1 (de)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936338A (en) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd Optical disk recording and reproducing method
JPH0544101B2 (de) * 1982-10-14 1993-07-05 Mitsubishi Electric Corp
FR2546310B1 (fr) * 1983-05-20 1986-04-25 Thomson Csf Monture reglable pour miroir pivotant et tete optique d'enregistrement-lecture utilisant une telle monture
NL8402943A (nl) * 1983-09-29 1985-04-16 Toshiba Kk Optische kop.
EP0147620B1 (de) * 1983-11-22 1991-06-05 Kabushiki Kaisha Toshiba Optischer Kopf
US4669073A (en) * 1984-01-31 1987-05-26 Matsushita Electric Industrial Co., Ltd. Optical disk drive apparatus
JPS60187933A (en) * 1984-03-07 1985-09-25 Toshiba Corp Optical recording and reproducing device
JPH039536B2 (de) * 1984-04-27 1991-02-08 Matsushita Electric Ind Co Ltd
JPH056740B2 (de) * 1984-05-15 1993-01-27 Matsushita Electric Ind Co Ltd
US4679184A (en) * 1984-06-08 1987-07-07 Matsushita Electric Industrial Co., Ltd. Optical recording and reproducing apparatus having erasing beam spot with asymmetrical intensity distribution
US4700336A (en) * 1984-06-19 1987-10-13 Matsushita Electric Industrial Co., Ltd. Optical recording and playback apparatus using plural light spots
JPS617818A (en) * 1984-06-22 1986-01-14 Fuji Photo Film Co Ltd Optical scanner
JPH0576610B2 (de) * 1984-07-05 1993-10-25 Ricoh Kk
US4718053A (en) * 1984-11-09 1988-01-05 Hitachi, Ltd. Optical information apparatus and method of recording and erasing information
JPS61133052A (en) * 1984-12-03 1986-06-20 Hitachi Ltd Optical recording and reproducing device
US4949329A (en) * 1985-05-21 1990-08-14 Hoechst Celanese Corp. Method of effecting erasure of optical information media including varying duty cycle, laser power and focus offset
US4841502A (en) * 1985-06-14 1989-06-20 Kabushiki Kaisha Toshiba Information recording system and reproducing for recording and reproducing information on a magneto-optical disk
FR2584223B1 (fr) * 1985-06-28 1994-06-17 Thomson Alcatel Gigadisc Memoire optique a suivi de piste echantillonne pour support d'information pregrave.
EP0224853B1 (de) * 1985-11-30 1992-02-05 Kabushiki Kaisha Toshiba Optischer Kopf
DE3616960A1 (de) * 1986-05-20 1987-11-26 Suess Kg Karl Optische anordnung zum erzeugen von zueinander gekreuzten linearen bildelementen
US4845696A (en) * 1986-07-02 1989-07-04 Sony Corporation Apparatus for optically recording and reproducing information in record tracks on a rotatable record disk
DE3627198A1 (de) * 1986-08-11 1988-02-18 Bbc Brown Boveri & Cie Anordnung zur zeitlich aufgeloesten optischen rueckstreumessung an lichtwellenleitern
US4827334A (en) * 1986-08-22 1989-05-02 Electrohome Limited Optical system and method for image sampling in a video projection system
JPS6371945A (en) * 1986-09-13 1988-04-01 Omron Tateisi Electronics Co Optical card recording and reproducing device
US4754446A (en) * 1987-01-23 1988-06-28 General Electric Company Optical recording system using refracted write beam for erasing
JPS63268139A (en) * 1987-04-24 1988-11-04 Alps Electric Co Ltd Optical device for optical pickup
JPS63304222A (en) * 1987-06-04 1988-12-12 Minolta Camera Co Ltd Laser light source device
US5060212A (en) * 1987-08-17 1991-10-22 Ricoh Company, Ltd. Integrated optical pick-up device
DE3885992D1 (de) * 1987-09-22 1994-01-13 Hitachi Maxell Optisches Informationsaufzeichnungs-/wiedergabegerät.
DE3888296D1 (de) * 1987-11-25 1994-04-14 Matsushita Electric Ind Co Ltd Optisches Informationsaufzeichnungs- und -löschverfahren.
NL8802517A (nl) * 1988-10-13 1990-05-01 Philips Nv Beeldprojektie-inrichting.
US5199013A (en) * 1989-01-18 1993-03-30 Teac Corporation Optical head apparatus applicable to optical disc apparatus
JPH02287932A (en) * 1989-04-28 1990-11-28 Toshiba Corp Optical head
CA2012401C (en) * 1989-05-26 1994-05-10 Anthony G. Dewey Focus-error detection using prism-enhanced spot size monitoring
JPH03175412A (en) * 1989-12-05 1991-07-30 Victor Co Of Japan Ltd Polarization converting element
US5073830A (en) * 1990-01-09 1991-12-17 Greyhawk Systems, Inc. High-efficiency polarized light source
USRE36740E (en) * 1990-03-30 2000-06-20 Nikon Corporation Cata-dioptric reduction projection optical system
US5220454A (en) * 1990-03-30 1993-06-15 Nikon Corporation Cata-dioptric reduction projection optical system
JPH04218015A (en) * 1990-07-27 1992-08-07 Victor Co Of Japan Ltd Polarization conversion element and dislay device
EP0475765B1 (de) * 1990-09-13 1996-12-11 Canon Kabushiki Kaisha Optischer Kopf für magnetooptisches Aufzeichnungs-/Wiedergabegerät
JP3224844B2 (ja) * 1991-09-09 2001-11-05 株式会社東芝 光ディスク装置
US5311496A (en) * 1992-11-13 1994-05-10 Hyundai Electronics America Achromatic expansion prism for magneto-optical drive
JP2698521B2 (ja) 1992-12-14 1998-01-19 キヤノン株式会社 反射屈折型光学系及び該光学系を備える投影露光装置
TW239211B (en) * 1993-04-02 1995-01-21 Hyundai Electronics America Electromagnetic lens actuator for optical disk drive
JP2001338433A (ja) * 2000-05-24 2001-12-07 Hitachi Ltd 光ヘッド及びそれを用いた光ディスク装置
US9726891B2 (en) 2015-09-03 2017-08-08 Microsoft Technology Licensing, Llc Left and right eye optical paths with shared optical element for head-mounted display device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7410642A (nl) * 1974-08-08 1976-02-10 Philips Nv Opto-elektronisch fokusseringsdetektiestelsel.
JPS5855567B2 (de) * 1975-06-06 1983-12-10 Hitachi Ltd
FR2470391B1 (de) * 1979-11-21 1983-07-18 Thomson Csf
JPS6220Y2 (de) * 1980-03-31 1987-01-06
FR2483664B1 (fr) * 1980-05-28 1985-06-28 Thomson Csf Dispositif optique d'enregistrement-lecture sur un support d'informations et systeme de memoire optique comprenant un tel dispositif
US4505584A (en) * 1981-01-22 1985-03-19 Olympus Optical Co., Ltd. Method and apparatus for detecting focussing error signal of objective lens
FR2498752B1 (fr) * 1981-01-23 1985-07-05 Thomson Csf Dispositif optique d'enregistrement lecture d'un support d'information comportant deux sources laser de longueurs d'ondes differentes
NL8101932A (nl) * 1981-04-21 1982-11-16 Philips Nv Inrichting voor het inschrijven en uitlezen van informatiesporen in een optische registratiedrager.
CA1190321A (en) * 1981-10-29 1985-07-09 Toshihisa Deguchi Magneto-optical head assembly
FR2523350B1 (fr) * 1982-03-09 1987-05-22 Thomson Csf Tete optique dans un dispositif d'enregistrement-lecture d'un support d'information

Also Published As

Publication number Publication date
US4689780A (en) 1987-08-25
EP0099123A3 (en) 1986-08-20
EP0099123A2 (de) 1984-01-25
EP0099123B1 (de) 1990-11-28
US4564931A (en) 1986-01-14

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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