IL121537A0 - Method and devices for fluorescent optical memory reading - Google Patents

Method and devices for fluorescent optical memory reading

Info

Publication number
IL121537A0
IL121537A0 IL12153797A IL12153797A IL121537A0 IL 121537 A0 IL121537 A0 IL 121537A0 IL 12153797 A IL12153797 A IL 12153797A IL 12153797 A IL12153797 A IL 12153797A IL 121537 A0 IL121537 A0 IL 121537A0
Authority
IL
Israel
Prior art keywords
devices
optical memory
memory reading
fluorescent optical
fluorescent
Prior art date
Application number
IL12153797A
Original Assignee
Omd Optical Memory Devices 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 Omd Optical Memory Devices Ltd filed Critical Omd Optical Memory Devices Ltd
Priority to IL12153797A priority Critical patent/IL121537A0/en
Publication of IL121537A0 publication Critical patent/IL121537A0/en
Priority to PCT/IL1998/000375 priority patent/WO1999009551A1/en
Priority to AU86444/98A priority patent/AU8644498A/en

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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1367—Stepped phase plates
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • 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
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
    • 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
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
IL12153797A 1997-08-13 1997-08-13 Method and devices for fluorescent optical memory reading IL121537A0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IL12153797A IL121537A0 (en) 1997-08-13 1997-08-13 Method and devices for fluorescent optical memory reading
PCT/IL1998/000375 WO1999009551A1 (en) 1997-08-13 1998-08-12 Reading/recording method and apparatus for three-dimensional information carrier
AU86444/98A AU8644498A (en) 1997-08-13 1998-08-12 Reading/recording method and apparatus for three-dimensional information carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL12153797A IL121537A0 (en) 1997-08-13 1997-08-13 Method and devices for fluorescent optical memory reading

Publications (1)

Publication Number Publication Date
IL121537A0 true IL121537A0 (en) 1998-02-08

Family

ID=11070499

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12153797A IL121537A0 (en) 1997-08-13 1997-08-13 Method and devices for fluorescent optical memory reading

Country Status (3)

Country Link
AU (1) AU8644498A (en)
IL (1) IL121537A0 (en)
WO (1) WO1999009551A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL134358A0 (en) * 2000-02-03 2001-04-30 C3D Inc Method and apparatus for reading of flourescent multilayer optical card
CA2838842C (en) 2011-06-09 2019-09-24 Case Western Reserve University Optical information storage medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090031A (en) * 1974-10-21 1978-05-16 Eli S. Jacobs Multi-layered opitcal data records and playback apparatus
JPS60236119A (en) * 1984-05-09 1985-11-22 Toshiba Corp Optical information recording and reproducing device
JP2904434B2 (en) * 1988-08-12 1999-06-14 パイオニア株式会社 Optical information recording medium and reproducing apparatus therefor
US5251198A (en) * 1992-05-29 1993-10-05 Strickler James H Reading device for multi-layered optical information carrier
US5559784A (en) * 1993-03-26 1996-09-24 Fuji Xerox Co., Ltd. Multi-layer optical information detection by two laser beam and optical multilayer recording medium

Also Published As

Publication number Publication date
WO1999009551A1 (en) 1999-02-25
AU8644498A (en) 1999-03-08

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