Patent ID: 11880063
Assignee: UNIVERSITé DE LIMOGES
Field: Materials, metallurgy (Chemistry)
Classification: CPC G  C  H | IPC C  G  H

Claim 6:
7. The optical element as claimed in claim 1, wherein the first material (M1) is obtained from a precursor comprising a powder according to the following formula:

(SiO2)x(Ga2O3)a(Oxy1)b(Oxy2)c, where:
Oxy1 represents an oxide chosen from ZnO, MgO, NbO2.5, WO3, NiO, SnO, TiO2, BiO1.5, AgO, CaO, MnO, or a mixture thereof,
Oxy2 represents an oxide chosen from Na2O, K2O, or a mixture thereof,
x is strictly larger than 50 and smaller than 80,
a is between 5 and 25,
b is between 1 and 25,
c is between 0 and 5, and
x, a, b and c are such that x+a+b+c=100.