Tomoegawa Co., Ltd.

Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gmbh

Heike Schneider

Helmut Schmidt

Martin Mennig

Peter William Oliveira

Ulrike Dellwo

Takamasa Harada

Andreas Zimmermann

Fumio Kita

The invention relates to solid or gel-type nanocomposite material which can be polymerised, containing a) 4.9 95.9 wt. % of a soluble polymer; b) 4-95 wt. % of a partially or totally condensed silane selected from the group of epoxyalkoxysilanes, alkoxysilanes and alkylalkoxysilanes, the silane having an inorganic condensation degree of between 33-100% and an organic conversion degree of between 0-95%; c) 0-60 wt. % of an acrylate; d) 0.1-50 wt. % of surface modified nanometric particles selected from the group of oxides, sulphides, selenides, tellurides, halogenides, carbides, arsenides, antimonides, nitrides, phosphides, carbonates, carboxylates, phosphates, sulphates, silicates, titanates, zirconates, aluminates, stannates, plumbates and a mixed oxides; e) 0-50 wt.-% of a plasticizer; f) 0-5 wt. % of a thermal or photochemical cross-linking initiator, sensitizer, auxiliary wetting agent, adhesive agent, antioxidant, stabiliser, coloring agent, photochrome material and thermochrome material in relation to the total weight (dry weight) of the nanocomposite material.

Nanocomposite material for the production of index of refraction gradient films

A process for producing an optical element having a gradient structure, wherein a potential difference is generated in a nanocomposite material comprising nanoscale particles in a matrix material to cause a directed diffusion of the nanoscale particles in the matrix material and a concentration gradient of the nanoscale particles in the matrix material.

Method for the production of optical elements with gradient structures

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Saarbruecken, Germany

Heike Schneider