127151 The first rear projection screen designed specifically for video and data projection, this screen is well suited for most A/V applications except those with large vertical viewing cones. This rear screen delivers a brilliant image and unlike most conventional rear screens, the DiamondScreen is cast (molded) and derives its incredible optical performance from its patented Fresnel/lenticular lens system. With its superior center-to-corner brightness ratio this is the world"s most sophisticated, most efficient rear projection screen.