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

Kopf zum optischen aufzeichnen und wiedergeben.

Info

Publication number
DE3382020D1
DE3382020D1 DE8383106877T DE3382020T DE3382020D1 DE 3382020 D1 DE3382020 D1 DE 3382020D1 DE 8383106877 T DE8383106877 T DE 8383106877T DE 3382020 T DE3382020 T DE 3382020T 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 - Lifetime
Application number
DE8383106877T
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 claimed from JP57123809A external-priority patent/JPS5914147A/ja
Priority claimed from JP57123807A external-priority patent/JPS5914146A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3382020D1 publication Critical patent/DE3382020D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical 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
    • 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
    • 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
DE8383106877T 1982-07-15 1983-07-13 Kopf zum optischen aufzeichnen und wiedergeben. Expired - Lifetime DE3382020D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57123809A JPS5914147A (ja) 1982-07-15 1982-07-15 光ビ−ム合成装置
JP57123807A JPS5914146A (ja) 1982-07-15 1982-07-15 光デイスク装置

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
DE8383106877T Expired - Lifetime 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 (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
JPS5971141A (ja) * 1982-10-14 1984-04-21 Mitsubishi Electric Corp 光学的信号読出し装置
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
US4665512A (en) * 1983-09-29 1987-05-12 Kabushiki Kaisha Toshiba Optical head for erasing
DE3484678D1 (de) * 1983-11-22 1991-07-11 Toshiba Kawasaki Kk Optischer kopf.
US4669073A (en) * 1984-01-31 1987-05-26 Matsushita Electric Industrial Co., Ltd. Optical disk drive apparatus
JPS60187933A (ja) * 1984-03-07 1985-09-25 Toshiba Corp 光学的記録再生装置
JPS60231928A (ja) * 1984-04-27 1985-11-18 Matsushita Electric Ind Co Ltd 光学情報記録消去方法
JPS60239943A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学ヘツド
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 (ja) * 1984-06-22 1986-01-14 Fuji Photo Film Co Ltd 光走査装置
JPS6118918A (ja) * 1984-07-05 1986-01-27 Ricoh Co Ltd ビ−ム整形光学系
US4718053A (en) * 1984-11-09 1988-01-05 Hitachi, Ltd. Optical information apparatus and method of recording and erasing information
JPS61133052A (ja) * 1984-12-03 1986-06-20 Hitachi Ltd 光学的記録再生装置
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 (ja) * 1986-09-13 1988-04-01 Omron Tateisi Electronics Co 光カ−ド記録再生装置
US4754446A (en) * 1987-01-23 1988-06-28 General Electric Company Optical recording system using refracted write beam for erasing
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
JPS63304222A (ja) * 1987-06-04 1988-12-12 Minolta Camera Co Ltd レ−ザ光源装置
US5060212A (en) * 1987-08-17 1991-10-22 Ricoh Company, Ltd. Integrated optical pick-up device
EP0309200B1 (de) * 1987-09-22 1993-12-01 Hitachi Maxell Ltd. Optisches Informationsaufzeichnungs-/wiedergabegerät
DE3888296T2 (de) * 1987-11-25 1994-08-04 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 (ja) * 1989-04-28 1990-11-28 Toshiba Corp 光学ヘッド
CA2012401C (en) * 1989-05-26 1994-05-10 Anthony G. Dewey Focus-error detection using prism-enhanced spot size monitoring
JPH03175412A (ja) * 1989-12-05 1991-07-30 Victor Co Of Japan Ltd 偏光変換素子
US5073830A (en) * 1990-01-09 1991-12-17 Greyhawk Systems, Inc. High-efficiency polarized light source
US5220454A (en) * 1990-03-30 1993-06-15 Nikon Corporation Cata-dioptric reduction projection optical system
USRE36740E (en) * 1990-03-30 2000-06-20 Nikon Corporation Cata-dioptric reduction projection optical system
JPH04218015A (ja) * 1990-07-27 1992-08-07 Victor Co Of Japan Ltd 偏光変換素子及び表示装置
US5293569A (en) * 1990-09-13 1994-03-08 Canon Kabushiki Kaisha Magneto-optical recording/reproducing apparatus including an optical head with an optical element having a plurality of prisms
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
US11698526B2 (en) * 2019-02-08 2023-07-11 The Charles Stark Draper Laboratory, Inc. Multi-channel optical system

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 (ja) * 1975-06-06 1983-12-10 株式会社日立製作所 ジヨウホウサイセイホウシキ
FR2470391A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Dispositif optique stigmatique d'emission-reception de rayonnements coherents et tete optique d'enregistrement-lecture comprenant un tel dispositif
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
EP0099123A3 (en) 1986-08-20
EP0099123A2 (de) 1984-01-25
US4689780A (en) 1987-08-25
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