Back to results
US 11,643,357 B2Granted
Chalcogenide glass material
AssigneeNippon Electric Glass Co., Ltd.
InventorsYoshimasa Matsushita, Fumio Sato
Life of this patent
Estimating the term…
Abstract
Provided is a chalcogenide glass material having excellent weather resistance and being suitable as an optical element for an infrared sensor. The chalcogenide glass material contains, in terms of % by mole, 20 to 99% Te and has an antireflection film formed thereon.
Claims7
A chalcogenide glass material consisting of:
- a glass base material, and
- an antireflection film formed directly on the glass base material, wherein
- the glass base material contains, in terms of % by mole, 20 to 99% Te, and
- the antireflection film includes a lower-refractive index layer and a higher-refractive index layer stacked alternately one on top of another in a total of two or more layers, the higher-refractive index layer having a higher refractive index than that of the lower-refractive index layer,
- a material of an outermost layer of the antireflection film, and thus also the outermost layer of the chalcogenide glass material, is at least one material selected from the group consisting of a metal oxide, hydrogenated carbon, diamond-like carbon, and ZnS, and
- a material of a first layer of the antireflection film on a side facing the glass base material chalcogenide glass material is at least one material selected from the group consisting of ZnS, Ge, Si, Y2O3, TiO2, and HfO2.
3 more elements
Dependencies are inferred from the claim text.