Centre National De La Recherche Scientifique

Guy Matzen

Thierry Cardinal

Mathieu Allix

Sébastien Chenu

Emmanuel Veron

Salaheddine Alahrache

Francis Millot

Marina Licheron

Alain Garcia

Kholoud Al Saghir

The present invention relates to novel vitroceramic or lens compositions that are nanostructured and transparent or translucent, including at least 97%, such as 97% to 100%, preferably 99% to 100%, by weight, relative to the total weight of the material, of a composition having the following formula I: (GeO)(SiO)(BO)(GaO)(Oxy)(Oxy)(I) where Oxyis an oxide selected from ZnO, MgO, NbO, WO, NiO, SnO, TiO, BiO, AgO, CaO, MnO, or a mixture thereof, selected preferably from ZnO, MgO, NbO, WO, NiO, SnO, AgO, CaO, MnO, or a mixture thereof, selected more preferably from ZnO, MgO, AgO, BiO, NbO, Or a mixture thereof, selected most preferably from ZnO, MgO, AgO, NbO, or a mixture thereof, and Oxyis an oxide selected from NaO, KO or a mixture thereof, Oxyis preferably NaO, and x, y, z, a, b and k are as defined in claim, to the manufacturing method thereof and to the uses thereof in the field of optics.

Nanostructured glasses and vitroceramics that are transparent in visible and infra-red ranges

The invention relates to novel transparent glasses, vitroceramics, and transparent or translucent ceramics containing, in relation to the total composition of the glass, vitroceramic, or ceramic, at least 60 wt % of a composition having the following formula (I): (M1O)x(M2O)y(M3)2O3)z(Al2O3)100&#x2212;x&#x2212;y&#x2212;z (I), where M1 is an element selected from among Ba and/or Sr, M2 is an element selected from among Mg or Ca, x and y are numbers such that 30&#x2266;x+y&#x2266;80, y is between 0% and 10% of x, M3 is an element selected from among B, Ga, or In, and z is a number between 0% and 10% of (100&#x2212;x&#x2212;y). The invention also relates to the method for manufacturing said compositions and to the uses of said compositions in the field of optics.

Transparent aluminate glasses, vitroceramics, and ceramics

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Saint Denis en Val, France

Guy Matzen