Composition for Producing Optical Elements Having Gradient Structure
AssigneeLeibniz-Institut fuer Neue Materialien gemeinnuetzige GmbH
InventorsPeter William De Oliveira, Peter Koenig, Michael Veith, Omid Yazdani-Assl
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Abstract
A composition for producing optical elements has a gradient structure, particularly for holographic applications, wherein the gradient structure is formed by a refractivity gradient. The composition is produced from a polymer and a light- and/or temperature-sensitive metal complex and the light- and/or temperature-sensitive metal complex is decomposed upon changing the local refractivity. The result is the formation of a refractivity gradient.
Claims20
A composition for producing optical elements with a refractive index gradient, comprising:
- a) at least one organic polymer;
- and
- b) at least one mono- or polynuclear metal complex which comprises at least one light-sensitive group selected from the group consisting of alky benzoylformates, amino ketones, benzoin ethers, benzophenones, dimethyl ketals, glyoxylates, hydroxy ketones, hydroxyphenones, metallocenes, organic iodinen compounds, phenyl ketones, phenylpropanes and phosphine oxides.
A metal complex of the formula:
- X(m-n)MR1n (I)
- wherein M is a metal or semimetal of groups 2 to 16 of the Periodic Table;
- R1 is a light-sensitive group;
- X is a group without a light-sensitive group;
- m is greater than n and m corresponds to the valency of the metal;
- and
- n is equal to m.
A process for producing an optical element, comprising:
- a) producing a composition comprising
- a1) at least one organic polymer;
- and
- a2) at least one mono- or polynuclear metal complex which comprises at least one light-sensitive group selected from the group consisting of alkyl benzoylformates, amino ketones, benzoin ethers, benzophenones, dimethyl ketals, glyoxylates, hydroxy ketones, hydroxyphenones, metallocenes, organic iodine compounds, phenyl ketones, phenylpropanes and phosphine oxides;
- and
- a3) at least one solvent;
- b) applying the composition to a surface or to a mold;
- and
- c) generating a potential difference for directed diffusion of the metal complexes through local decomposition of the metal complexes.
15-16. (canceled)
Dependencies are inferred from the claim text.