WO2002019255A1 - Support optique fluorescent multicouche, procede, et appareil d'enregistrement a grande vitesse - Google Patents

Support optique fluorescent multicouche, procede, et appareil d'enregistrement a grande vitesse Download PDF

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Publication number
WO2002019255A1
WO2002019255A1 PCT/US2001/026404 US0126404W WO0219255A1 WO 2002019255 A1 WO2002019255 A1 WO 2002019255A1 US 0126404 W US0126404 W US 0126404W WO 0219255 A1 WO0219255 A1 WO 0219255A1
Authority
WO
WIPO (PCT)
Prior art keywords
medium
information
laser beams
compound layers
laser
Prior art date
Application number
PCT/US2001/026404
Other languages
English (en)
Inventor
Vladimir Schwartz
Anatoly Dovgan
Jacob Malkin
Eugene Kapinus
Mark Alperovich
Eugene Levich
Boris Chernobrod
Original Assignee
Trid Store Ip Llc
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 Trid Store Ip Llc filed Critical Trid Store Ip Llc
Priority to AU2001286693A priority Critical patent/AU2001286693A1/en
Publication of WO2002019255A1 publication Critical patent/WO2002019255A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06046—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/126—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by photographic or thermographic registration

Definitions

  • the present invention is directed to the recording of digital or analog information and more particularly to the high-speed recording of such information on ROM (read-only memory) or WORM (write once, read many) media.
  • ROM read-only memory
  • WORM write once, read many
  • photosensitive fluorescent materials to record information is known, for example, from U.S. Provisional Application No. 60/208,505, filed June 2, 2000, and having inventors in common with the present application. The disclosure of that application is hereby incorporated by reference in its entirety into the present disclosure. There were three suggested types of photosensitive compounds, each with a sharp threshold of phase transition.
  • the first was a two-layer system with a fluorescent dye in the first film and a mixture of quencher and absorber in the second layer. During illumination by laser light, the second layer absorbs the light and is melted. The quencher diffuses into the fluorescent layer and provides efficient spot bleaching
  • the present invention is directed to a technique using a multi-layer medium for optical memory recording (such as WORM) using photosensitive layers with fluorescent marks.
  • the medium has a transparent substrate and multiple bonded information layers, spatially divided by dye polymer layers and assembled using adhesives. Information is stored as marks on a thin photosensitive layer.
  • the reading and writing laser beam is positioned using a tracking method referenced to a wobbling groove at the boundary of the information field.
  • a high recording speed is enabled by efficient, fast phase transition and by multi-laser beam parallel recording.
  • Fig. 1 shows a cross-sectional view of a portion of an information recording medium for use with the present invention
  • Fig. 2 shows a schematic diagram of an optical device for use with the medium of Fig. 1.
  • Fig. 1 shows a multi-layer WORM disc 100 having a substrate 100 and a plurality of dual compound layers 103, held together by adhesive layers 104.
  • Each dual compound layer 103 includes a first component layer 106 of a solid solution of fluorescent dye-polymer and a second component layer 108 of a mixed solution of quencher and absorber creating a polymer compound.
  • each dual compound layer 103 also has at least one circular wobble groove 110 imprinted thereon, whose use will be explained below.
  • the polymer compound of the second component layer 108 has a lower inciting temperature than the first fluorescent component layer 106. Recording and reading can thus be realized by using the same laser or two different lasers with different wavelengths.
  • the data recording time is given by the expression:
  • t dT*C*m*N/(P*a), where dT is the difference in temperature, C is the coefficient of thermo-capacity, m is the mass of a single information mark volume, N is the number of layers, P is the focusing power, and a is the absorption coefficient.
  • dT 200 K
  • C 1.7 J/g
  • m 1.7 J/g
  • the method includes a process of manufacturing multi-layer dual compound media assembled on an optically transparent substrate, as described above with reference to Fig. 1.
  • the optical system 200 of Fig. 2 is used.
  • a laser 202 emits a light beam LI, which passes through a telescope optical system 204, a holographic or diffractive optical element 206, a beam splitter 208, and an objective lens 210 onto a recording medium 100.
  • the holographic or diffractive optical element 206 breaks up the light beam LI so that multiple light beams L2 are incident on the medium 100.
  • the reflected light L3 passes through the objective lens 210 and is reflected by the beam splitter 208 through a collimating lens system 212 onto a photodetector system 214.
  • the multiple light beams L2 can be modulated in any of several suitable ways, which are known in the art.
  • the system 200 allows the use of one or several side beams for auto-focusing and auto-tracking systems.
  • each layer has one or several wobble grooves in the information field, which are utilized by a laser beam servo-system for control of data mark track pitch.
  • the remaining part of the information field is without any geometrical features or marks.
  • the auto-focusing is provided by a servo- system that utilizes the wobble groove principle and a fluorescence signal from a certain recording spot.
  • the photodetector system 214 has a single or multi-section avalanche diode.
  • an auto-focusing system uses the astigmatic principle and a multi-section PIN diode matrix. Focusing and tracking techniques are well known in the art of optical information storage and retrieval, e.g., with regard to known CD and CD-ROM reading systems, and therefore will not be explained in further detail here.
  • each layer is centrally imprinted with at least one circular wobble groove to enable laser beam tracking during data writing and reading.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un support d'enregistrement (6) multicouche à mémoire optique (tel qu'un disque optique non réinscriptible) comprenant des couches photosensibles dotées de marques fluorescentes. Ledit support comprend un substrat transparent, et plusieurs couches d'informations reliées, spatialement divisées par des couches polymère colorant, et assemblées à l'aide d'adhésifs. Les information sont stockées sous forme de marques sur une couche photosensible mince. Le dispositif de lecture/écriture comprend une source laser (1) émettant un faisceau laser, un élément (3) holographique ou de diffraction, et un dispositif optique (4) permettant de diviser ledit faisceau laser. Les faisceaux laser sont positionnés à l'aide d'une technique d'alignement par rapport à un sillon ondulé de référence au niveau de la limite du champ d'informations, et lesdites informations peuvent être enregistrées en parallèle à l'aide de plusieurs faisceaux.
PCT/US2001/026404 2000-08-25 2001-08-24 Support optique fluorescent multicouche, procede, et appareil d'enregistrement a grande vitesse WO2002019255A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001286693A AU2001286693A1 (en) 2000-08-25 2001-08-24 Multilayer fluorescent optical medium, method and apparatus for high- speed recording

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US22784900P 2000-08-25 2000-08-25
US60/227,849 2000-08-25
US93517501A 2001-08-23 2001-08-23
US09/935,175 2001-08-23

Publications (1)

Publication Number Publication Date
WO2002019255A1 true WO2002019255A1 (fr) 2002-03-07

Family

ID=26921817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/026404 WO2002019255A1 (fr) 2000-08-25 2001-08-24 Support optique fluorescent multicouche, procede, et appareil d'enregistrement a grande vitesse

Country Status (2)

Country Link
AU (1) AU2001286693A1 (fr)
WO (1) WO2002019255A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8715908B2 (en) 2006-06-30 2014-05-06 E I Du Pont De Nemours And Company Process of using an imaging element having a photoluminescent tag
US8883393B2 (en) 2005-01-07 2014-11-11 E I Du Pont De Nemours And Company Printing form precursor for use as a recording element
US9275671B2 (en) 2011-06-09 2016-03-01 Case Western Reserve University Optical information storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063556A (en) * 1988-08-12 1991-11-05 Pioneer Electronic Corporation Optical information recording medium providing reflected light at two different wavelengths, recording apparatus utilizing the same
US5278816A (en) * 1989-09-22 1994-01-11 Russell James T Recording/reproducing system using wavelength/depth selective optical storage medium
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
US5910940A (en) * 1996-10-08 1999-06-08 Polaroid Corporation Storage medium having a layer of micro-optical lenses each lens generating an evanescent field
US6071671A (en) * 1996-12-05 2000-06-06 Omd Devices Llc Fluorescent optical memory

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063556A (en) * 1988-08-12 1991-11-05 Pioneer Electronic Corporation Optical information recording medium providing reflected light at two different wavelengths, recording apparatus utilizing the same
US5278816A (en) * 1989-09-22 1994-01-11 Russell James T Recording/reproducing system using wavelength/depth selective optical storage medium
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
US5910940A (en) * 1996-10-08 1999-06-08 Polaroid Corporation Storage medium having a layer of micro-optical lenses each lens generating an evanescent field
US6094413A (en) * 1996-10-08 2000-07-25 Polaroid Corporation Optical recording systems
US6071671A (en) * 1996-12-05 2000-06-06 Omd Devices Llc Fluorescent optical memory
US6115348A (en) * 1997-11-18 2000-09-05 Calimetrics, Inc. Information storage systems utilizing media with optically-differentiated data sites

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8883393B2 (en) 2005-01-07 2014-11-11 E I Du Pont De Nemours And Company Printing form precursor for use as a recording element
US8715908B2 (en) 2006-06-30 2014-05-06 E I Du Pont De Nemours And Company Process of using an imaging element having a photoluminescent tag
US9275671B2 (en) 2011-06-09 2016-03-01 Case Western Reserve University Optical information storage medium

Also Published As

Publication number Publication date
AU2001286693A1 (en) 2002-03-13

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