GLASS WITH OPTICALLY TRANSPARENT PROTECTIVE COATING AND METHOD OF ITS PRODUCTION Russian patent published in 2017 - IPC C03C17/36 C23C14/35 B32B17/00 

FIELD: optical system; manufacturing technology.

SUBSTANCE: invention relates to glass with optically transparent coating and method of its production and can be used in production of optical elements of spacecraft. Glass with optically transparent protective coating has substrate of optically transparent glass and applied on substrate two-layer transparent coating. Coating consists of two layers, lower layer is nano-metal with thickness from 20 to 40 nm, upper ceramic layer is made of aluminium nitride and silicon nitride with thickness from 5 to 15 mcm with nanocrystalline or amorphous nano-crystalline or amorphous structure. Method consists of three stages: 1) bombardment of substrate surface with pulse-periodic high-energy beams of ions of coating lower layer metal, 2) unipolar pulse magnetron deposition of lower nanocrystalline metal layer, 3) bipolar pulse magnetron deposition of upper double-phase ceramic layer, carried out in single vacuum cycle.

EFFECT: technical result consists in production of glass with high resistance to impact effect of high-speed solid particles.

11 cl, 8 dwg, 3 ex, 2 tbl