Hologram recording medium

Details Hologram recording medium Hologram recording medium

2011-04-26

2011-04-26

Angebranndt, Martin J (Department: 1722)

Radiation imagery chemistry: process, composition, or product th

Holographic process, composition, or product

Composition or product or process of making the same

C430S281100, C430S001000, C359S003000

Reexamination Certificate

active

07932000

ABSTRACT:
The present invention provides a hologram recording medium which can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low dimension change (low shrinkage) and high multiplicity in holographic memory record using a blue laser. A hologram recording medium (11) comprising at least a hologram recording material layer, wherein the hologram recording material layer (21) comprises at least: an organometallic compound having at least a Ti—O bond, and a photopolymerizable compound; and said medium has a light transmittance is 50% or more at a wavelength of 405 nm, or a light reflectance is 25% or more at a wavelength of 405 nm. The organometallic compound is favorably obtained by subjecting an alkoxide compound of the corresponding metal(s) to hydrolysis and polymerization reaction in an organic solvent which neither contains cyclic ether skeleton nor carbonyl oxygen.

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