PROJECTION DEVICE OF TELEVISION AND COMPUTER IMAGES Russian patent published in 2009 - IPC G03B21/00 

FIELD: physics, video equipment.

SUBSTANCE: invention concerns agents of the information displaying for collective using, namely, to projection devices of luminal type. The projection device includes television and computer radiants of signals, multichannel circuit changers and video processors, a guidance block, a set of video cubes, each contains the projection module with a projector, the screen module including a blanket frame, a projection screen with the metal skeleton, being the fragment of a composite projection screen consisting of an exterior surface of phacoidal lenticular structure structure and an interior surface of lenticular Fresnel's structure between which the dark film layer is located, system of fastening of a frame with a projection screen. Transparent lexan enters into a composition of fastening of projection screens. The transparent organic glass is placed in each projection screen for lenticular Fresnel's structure. The projection screens are fastened among themselves on their perimetre by an intermittent layer of transparent lexan in the form of alternating strips in the thickness equal Y, in the length equal Z, and in the breadth equal X, and having among themselves a backlash quantity R. Quantity of k and p strips of transparent lexan across and verticals of each projection screen, contacting with two other screens, equally multiple quantity k=2L/(X+R) and p=2H/(X+R), where L, H - the sizes of a projection screen across and verticals accordingly.

EFFECT: maintenance of quantity reduction of a backlash between fragments of a composite projection screen and improvement of information displaying quality.

2 cl, 7 dwg