PROJECTION SCREEN Russian patent published in 2016 - IPC G03B21/56 

FIELD: physics.

SUBSTANCE: projection screen is in the form of a bulky layer of a composite with a matrix of transparent material and with functional non-uniformities distributed on the thickness of the matrix layer. Conversion of radiation into an image is distributed in a volume of semi-transparent material of the conversion medium of the screen within the boundaries of said medium on the thickness of its layer and its surface coatings. Functional non-uniformities are distributed on the thickness of the matrix layer-wise and/or with continuously varying concentration within the layer or the entire thickness of the matrix. The thickness of the layer of the conversion medium from the front to the rear surface is in the range of the width of the inter-pixel lattice to ten times the diagonal pixel size of the digitised image of the projector on the screen.

EFFECT: enabling reconstruction of identification features of information patterns of real objects in a wide acceptance angle of images with lateral illumination.

14 cl, 4 dwg