DE60034826D1 - Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe - Google Patents

Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe

Info

Publication number
DE60034826D1
DE60034826D1 DE60034826T DE60034826T DE60034826D1 DE 60034826 D1 DE60034826 D1 DE 60034826D1 DE 60034826 T DE60034826 T DE 60034826T DE 60034826 T DE60034826 T DE 60034826T DE 60034826 D1 DE60034826 D1 DE 60034826D1
Authority
DE
Germany
Prior art keywords
light flux
diffracted ray
wavelength
information
information 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
DE60034826T
Other languages
English (en)
Other versions
DE60034826T2 (de
Inventor
Norikazu Arai
Toshiyuki Kojima
Toshihiko Kiriki
Kohei Ota
Shinichiro Saito
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.)
Konica Minolta Opto Inc
Original Assignee
Konica Minolta Opto Inc
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 Konica Minolta Opto Inc filed Critical Konica Minolta Opto Inc
Publication of DE60034826D1 publication Critical patent/DE60034826D1/de
Application granted granted Critical
Publication of DE60034826T2 publication Critical patent/DE60034826T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • 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
    • G11B7/125—Optical 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
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0084—Key or electric means; Emergency release
    • E05B2047/0086—Emergency release, e.g. key or electromagnet
    • E05B2047/0087—Electric spare devices, e.g. auxiliary batteries or capacitors for back up
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
DE60034826T 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe Expired - Lifetime DE60034826T2 (de)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP1501099 1999-01-22
JP1501099 1999-01-22
JP4192599 1999-02-19
JP4192599 1999-02-19
JP9534799 1999-04-01
JP9534799 1999-04-01
JP9748099 1999-04-05
JP9748099 1999-04-05
JP2574699 1999-09-10
JP25746699 1999-09-10
JP31270199 1999-11-02
JP31270199 1999-11-02

Publications (2)

Publication Number Publication Date
DE60034826D1 true DE60034826D1 (de) 2007-06-21
DE60034826T2 DE60034826T2 (de) 2008-01-31

Family

ID=27548555

Family Applications (7)

Application Number Title Priority Date Filing Date
DE60034825T Expired - Lifetime DE60034825T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe
DE60000114T Expired - Lifetime DE60000114T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung und Verfahren zur Informationsaufzeichnung und Informationswiedergabe
DE60034829T Expired - Fee Related DE60034829T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe
DE60018735T Expired - Lifetime DE60018735T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung, Aufzeichnungs- /-Wiedergabegerät mit dieser optischen Abtastvorrichtung, optisches Element und Verfahren zur Informationsaufzeichnung /-Wiedergabe
DE60042812T Expired - Lifetime DE60042812D1 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung, mit der optischen Abtastvorrichtung versehenes Aufnahme/Wiedergabegerät, optisches Element und Verfahren zur Datenaufnahme/wiedergabe
DE60034826T Expired - Lifetime DE60034826T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe
DE60034969T Expired - Lifetime DE60034969T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe

Family Applications Before (5)

Application Number Title Priority Date Filing Date
DE60034825T Expired - Lifetime DE60034825T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe
DE60000114T Expired - Lifetime DE60000114T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung und Verfahren zur Informationsaufzeichnung und Informationswiedergabe
DE60034829T Expired - Fee Related DE60034829T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe
DE60018735T Expired - Lifetime DE60018735T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung, Aufzeichnungs- /-Wiedergabegerät mit dieser optischen Abtastvorrichtung, optisches Element und Verfahren zur Informationsaufzeichnung /-Wiedergabe
DE60042812T Expired - Lifetime DE60042812D1 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung, mit der optischen Abtastvorrichtung versehenes Aufnahme/Wiedergabegerät, optisches Element und Verfahren zur Datenaufnahme/wiedergabe

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE60034969T Expired - Lifetime DE60034969T2 (de) 1999-01-22 2000-01-18 Optische Abtastvorrichtung zur Informationsaufzeichnung und Informationswiedergabe

Country Status (12)

Country Link
US (13) US6870805B1 (de)
EP (8) EP1118986B1 (de)
JP (3) JP4775674B2 (de)
KR (7) KR100411219B1 (de)
CN (5) CN1224968C (de)
AT (7) ATE441183T1 (de)
AU (1) AU760001B2 (de)
CA (1) CA2359309C (de)
DE (7) DE60034825T2 (de)
HK (1) HK1026977A1 (de)
ID (1) ID29992A (de)
WO (1) WO2000043997A2 (de)

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* Cited by examiner, † Cited by third party
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