COATED ARTICLE FOR USE IN VIEWING WINDOW, AS WELL AS METHOD FOR MAKING SAME Russian patent published in 2020 - IPC C03C17/36 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a coated article and can be used for observation. In particular, a viewing window is provided, comprising a coated article, which includes a coating resting on a glass substrate. Said coating comprises: first dielectric layer with high index, having refraction index of about 1.8–2.5; first low-density dielectric layer having a refraction index of about 1.2–1.7, on a glass substrate on top of at least a first dielectric layer with a high index; a reflective layer on the glass substrate on top of at least a first dielectric layer with a high index and a first dielectric layer with a low index; a second dielectric layer with a high index, having a refraction index of about 1.8–2.5, on the glass substrate on top of at least a reflective layer. Said coating is located on glass substrate on the side of observer. Furthermore, the coated article for a window of observation when measured in the monolith has a visible light transmittance (T_vis. or TY) less than the visible light reflection from the glass side (RGY) coated articles and more reflection of visible light on the side of the film (RFY) of the coated article, such that the viewing window is configured (a) to enable the observer on the observer side to look through the viewing window to see an object on the opposite side of the viewing window, and (b) excluding the possibility for the viewer from the opposite side to clearly see through the observation window in order to inspect objects on the side of the observer.

EFFECT: technical result is a wider range of equipment.

40 cl, 3 dwg, 8 tbl