The utility model discloses a piece of
mask double-sided mirror coated glass in the technical field of glass magnetron
sputtering coating, which comprises a glass substrate and a
coating layer, the
film coating layer is sequentially compounded with a first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer from the glass substrate to the outside, the first film layer is a
niobium oxide layer, the
film coating thickness of the first film layer is 55-60 nm, the second film layer is a
silicon oxide layer, the
film coating thickness of the second film layer is 40-50 nm, and the film
coating thickness of the ninth film layer is 40-50 nm. The third film layer is a
nickel-
chromium layer, the coating thickness of the third film layer is 55 nm-60 nm, the fourth film layer is a
silicon oxide layer, the coating thickness of the fourth film layer is 45 nm-55 nm, the fifth film layer is a
niobium oxide layer, and the coating thickness of the fifth film layer is 60 nm-65 nm. The visible
light reflection of the film surface of the coating area can reach 76% or above, and the visible
light reflection of the glass surface can reach 72% or above; the two surfaces of the film have a mirror surface effect, and the film has excellent
thermal stability and friction resistance.