METHOD FOR PROJECTING OR REVERSE PROJECTING ON GLASS, COMPRISING TRANSPARENT LAYER ELEMENT HAVING DIFFUSE REFLECTION PROPERTIES Russian patent published in 2017 - IPC G03B21/60 G03B21/606 

FIELD: physics.

SUBSTANCE: method of direct or reverse projecting uses a screen, which comprises two outer layers and a core layer. The refractive index of the core layer is different from the refractive indices of the outer layers. The core layer may also be made from the layer package, the refractive indices of which differ from each other and from the refractive indices of the outer layers. The surfaces of the core layer have a texture (squeezing).

EFFECT: increasing brightness, image contrast, increasing the view angle, eliminating ghost images.

15 cl, 9 dwg