DE3584615D1 - Optische aufnahme- und wiedergabevorrichtung. - Google Patents

Optische aufnahme- und wiedergabevorrichtung.

Info

Publication number
DE3584615D1
DE3584615D1 DE8585115270T DE3584615T DE3584615D1 DE 3584615 D1 DE3584615 D1 DE 3584615D1 DE 8585115270 T DE8585115270 T DE 8585115270T DE 3584615 T DE3584615 T DE 3584615T DE 3584615 D1 DE3584615 D1 DE 3584615D1
Authority
DE
Germany
Prior art keywords
optical recording
playing device
playing
recording
optical
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
DE8585115270T
Other languages
English (en)
Inventor
Tetsuo Ito
Hiroshi Sasaki
Yoshio Sato
Satoshi Shimada
Norifumi Miyamoto
Nobuyoshi Tsuboi
Hideki Nihei
Hiroaki Koyanagi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3584615D1 publication Critical patent/DE3584615D1/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
    • G11B7/12—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
    • G11B7/1395—Beam splitters or combiners
DE8585115270T 1984-12-03 1985-12-02 Optische aufnahme- und wiedergabevorrichtung. Expired - Lifetime DE3584615D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59255317A JPS61133052A (ja) 1984-12-03 1984-12-03 光学的記録再生装置

Publications (1)

Publication Number Publication Date
DE3584615D1 true DE3584615D1 (de) 1991-12-12

Family

ID=17277099

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585115270T Expired - Lifetime DE3584615D1 (de) 1984-12-03 1985-12-02 Optische aufnahme- und wiedergabevorrichtung.

Country Status (4)

Country Link
US (1) US4811328A (de)
EP (1) EP0184750B1 (de)
JP (1) JPS61133052A (de)
DE (1) DE3584615D1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68924303T2 (de) * 1988-06-14 1996-02-29 Nec Corp Optische Kopfanordnung.
JPH02246030A (ja) * 1989-03-17 1990-10-01 Ricoh Co Ltd 光情報記録再生装置
US5153773A (en) * 1989-06-08 1992-10-06 Canon Kabushiki Kaisha Illumination device including amplitude-division and beam movements
JP2723986B2 (ja) * 1989-08-02 1998-03-09 株式会社日立製作所 光ディスク原盤の作製方法
JPH0827971B2 (ja) * 1990-09-25 1996-03-21 インターナショナル・ビジネス・マシーンズ・コーポレイション 複数ビーム式光記録のためのシステム
US5216562A (en) * 1990-09-25 1993-06-01 International Business Machines Corporation Multi-beam optical recording system and method
JPH04281231A (ja) * 1990-11-30 1992-10-06 Toshiba Corp 光集束光学系
US5206852A (en) * 1991-06-29 1993-04-27 Samsung Electronics Co., Ltd. High-density recording optical head
US5231624A (en) * 1991-08-01 1993-07-27 Tandy Corporation System and method using a reduce profile light beam for high density recording on optical media
US5473475A (en) * 1993-01-29 1995-12-05 The United States Of America As Represented By The United States Department Of Energy Method for changing the cross section of a laser beam
US5380999A (en) * 1993-12-29 1995-01-10 International Business Machines, Corp. Linear scanning using a single illumination and imaging optic stations with a first pair of parallel mirrors and a second pair of mirrors extending into paths of light beams
US5557475A (en) * 1994-07-12 1996-09-17 Coherent, Inc. Optical system for improving the symmetry of the beam emitted from a broad area laser diode
US5699191A (en) * 1996-10-24 1997-12-16 Xerox Corporation Narrow-pitch beam homogenizer
JPH10166167A (ja) * 1996-12-03 1998-06-23 Komatsu Ltd レーザマーキング方法及び装置
JP3370612B2 (ja) * 1998-09-14 2003-01-27 富士通株式会社 光強度変換素子、コリメートレンズ、対物レンズ及び光学装置
JP2002127476A (ja) * 2000-10-26 2002-05-08 Fuji Photo Film Co Ltd 記録装置
AU2003274969A1 (en) * 2002-09-12 2004-04-30 Visotek, Inc. Contact lens package and storage case, holder, and system and method of making and using
US7728860B2 (en) * 2005-08-12 2010-06-01 Ricoh Company, Ltd. Method for image processing and image processing apparatus
JP5255218B2 (ja) * 2006-03-14 2013-08-07 株式会社リコー 画像処理方法
JP5228471B2 (ja) * 2006-12-26 2013-07-03 株式会社リコー 画像処理方法及び画像処理装置
US8101334B2 (en) * 2008-02-13 2012-01-24 Ricoh Company, Ltd. Image processing method and image processing apparatus

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753608A (en) * 1971-04-15 1973-08-21 Honeywell Inc Optical polarization spot size changing devices
US3736046A (en) * 1971-04-15 1973-05-29 Honeywell Inc Optical spot size changer
JPS5613928B2 (de) * 1973-07-13 1981-04-01
US3983317A (en) * 1974-12-09 1976-09-28 Teletype Corporation Astigmatizer for laser recording and reproducing system
US4125860A (en) * 1975-06-16 1978-11-14 Nippon Telegraph And Telephone Public Corporation Reproducer for an eraseable videodisc
GB1549613A (en) * 1975-12-23 1979-08-08 Plessey Co Ltd Optical system for producing an area of light of even dispersion of illumination
JPS52149927A (en) * 1976-06-09 1977-12-13 Mitsubishi Electric Corp Beam addressable information memory unit
JPS5883347A (ja) * 1981-11-09 1983-05-19 Canon Inc 光磁気記録装置
JPH068934B2 (ja) * 1982-01-11 1994-02-02 オリンパス光学工業株式会社 光束合成装置
EP0099123B1 (de) * 1982-07-15 1990-11-28 Matsushita Electric Industrial Co., Ltd. Kopf zum optischen Aufzeichnen und Wiedergeben
JPS5968844A (ja) * 1982-10-14 1984-04-18 Matsushita Electric Ind Co Ltd 光学的可逆記録再生装置
JPH0816987B2 (ja) * 1982-10-15 1996-02-21 松下電器産業株式会社 光学的記録再生装置
JPS59178635A (ja) * 1983-03-29 1984-10-09 Victor Co Of Japan Ltd 光学的記録装置
US4623225A (en) * 1984-06-29 1986-11-18 Melles Griot, Irvine Company Anamorphic prism for beam shaping

Also Published As

Publication number Publication date
JPS61133052A (ja) 1986-06-20
EP0184750A2 (de) 1986-06-18
US4811328A (en) 1989-03-07
EP0184750B1 (de) 1991-11-06
EP0184750A3 (en) 1988-07-13

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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