Optical: systems and elements – Holographic system or element – Having particular recording medium
Reexamination Certificate
2006-09-05
2006-09-05
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Holographic system or element
Having particular recording medium
C359S004000, C430S001000
Reexamination Certificate
active
07102802
ABSTRACT:
The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye; irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element; activating the optically transparent substrate to form an intramolecular hydrogen bond to a nitrone oxygen in residual photochemically active dye, to stabilize the optically readable datum.
REFERENCES:
patent: 3850633 (1974-11-01), Moraw et al.
patent: 2005/0136333 (2005-06-01), Lawrence et al.
Copending U.S. Appl. No. 10/954,779, filed Sep. 30, 2004, entitled “Holographic Storage Medium”.
Copending U.S. Appl. No. 11/260,806, filed Oct. 27, 2005, entitled “Methods for Making Holographic Data Storage Artciels”.
Copending U.S. Appl. No. 11/296,246, filed Dec. 7, 2005, entitled “Methods for Storing Holographic Data and Articles Having Enhanced Data Storage Lifetime Derived Therefrom”.
Boden Eugene Pauling
Erben Christoph Georg
Longley Kathryn Lynn
Shi Xiaolei
Boutsikaris Leonidas
Caruso Andrew J.
General Electric Company
Powell, III William E.
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