DE69332730T2 - Optisches Speichergerät - Google Patents

Optisches Speichergerät

Info

Publication number
DE69332730T2
DE69332730T2 DE69332730T DE69332730T DE69332730T2 DE 69332730 T2 DE69332730 T2 DE 69332730T2 DE 69332730 T DE69332730 T DE 69332730T DE 69332730 T DE69332730 T DE 69332730T DE 69332730 T2 DE69332730 T2 DE 69332730T2
Authority
DE
Germany
Prior art keywords
storage device
optical storage
optical
storage
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
DE69332730T
Other languages
English (en)
Other versions
DE69332730D1 (de
Inventor
Yoshiaki Komma
Makoto Kato
Seiji Nishino
Sadao Mizuno
Hidenori Wada
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
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69332730D1 publication Critical patent/DE69332730D1/de
Publication of DE69332730T2 publication Critical patent/DE69332730T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353Diffractive elements, e.g. holograms or gratings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/18Diffraction gratings
    • G02B5/1876Diffractive Fresnel lenses; Zone plates; Kinoforms
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/32Holograms used as optical elements
    • 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
    • G11B7/125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B7/125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127Lasers; Multiple laser arrays
    • 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
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1359Single prisms
    • 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
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372Lenses
    • G11B7/1376Collimator lenses
    • 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
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372Lenses
    • G11B7/1378Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • 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
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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
    • G11B7/09Disposition 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
    • G11B7/0908Disposition 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 for focusing only
    • G11B7/0912Disposition 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 for focusing only by push-pull method
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00Optical: systems and elements
    • Y10S359/90Methods

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
DE69332730T 1992-08-07 1993-08-03 Optisches Speichergerät Expired - Lifetime DE69332730T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21110892 1992-08-07

Publications (2)

Publication Number Publication Date
DE69332730D1 DE69332730D1 (de) 2003-04-03
DE69332730T2 true DE69332730T2 (de) 2003-10-23

Family

ID=16600548

Family Applications (4)

Application Number Title Priority Date Filing Date
DE69332730T Expired - Lifetime DE69332730T2 (de) 1992-08-07 1993-08-03 Optisches Speichergerät
DE69331020T Expired - Lifetime DE69331020T2 (de) 1992-08-07 1993-08-03 Optische Speichervorrichtung
DE69319676T Expired - Lifetime DE69319676T2 (de) 1992-08-07 1993-08-03 Optisches System und Gerät für Bildinformation
DE69330357T Expired - Lifetime DE69330357T2 (de) 1992-08-07 1993-08-03 Optische Speichervorrichtung

Family Applications After (3)

Application Number Title Priority Date Filing Date
DE69331020T Expired - Lifetime DE69331020T2 (de) 1992-08-07 1993-08-03 Optische Speichervorrichtung
DE69319676T Expired - Lifetime DE69319676T2 (de) 1992-08-07 1993-08-03 Optisches System und Gerät für Bildinformation
DE69330357T Expired - Lifetime DE69330357T2 (de) 1992-08-07 1993-08-03 Optische Speichervorrichtung

Country Status (3)

Country Link
US (1) US5644413A (de)
EP (4) EP0790605B1 (de)
DE (4) DE69332730T2 (de)

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US6275461B1 (en) 1996-08-29 2001-08-14 Samsung Electronic Co., Ltd. Optical pickup using an optical phase plate
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US6639889B1 (en) 1997-02-13 2003-10-28 Samsung Electronics Co., Ltd. Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats
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JP2004127482A (ja) * 2002-08-07 2004-04-22 Sharp Corp 光ピックアップ装置
KR20050057451A (ko) * 2002-09-19 2005-06-16 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
KR100480638B1 (ko) * 2002-12-10 2005-03-31 삼성전자주식회사 광픽업장치
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JP4329608B2 (ja) * 2004-04-23 2009-09-09 コニカミノルタオプト株式会社 対物レンズ、光ピックアップ装置及び光情報記録再生装置
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Also Published As

Publication number Publication date
US5644413A (en) 1997-07-01
EP0790606A2 (de) 1997-08-20
DE69331020D1 (de) 2001-11-29
EP1120779A2 (de) 2001-08-01
EP0587297A2 (de) 1994-03-16
EP0790605A3 (de) 1999-04-07
EP1120779A3 (de) 2001-08-08
EP0790605B1 (de) 2001-06-13
EP0790605A2 (de) 1997-08-20
DE69319676D1 (de) 1998-08-20
DE69319676T2 (de) 1998-12-10
DE69330357D1 (de) 2001-07-19
EP1120779B1 (de) 2003-02-26
DE69331020T2 (de) 2002-06-06
DE69332730D1 (de) 2003-04-03
EP0790606A3 (de) 1999-04-07
DE69330357T2 (de) 2001-10-31
EP0587297A3 (en) 1994-06-08
EP0790606B1 (de) 2001-10-24
EP0587297B1 (de) 1998-07-15

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8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP