From a vutec e-mail...
More info here: The Projection Screen Technology Leader - Vutec Corporation[FONT=Arial,Helvetica,sans-serif][FONT=Arial, Helvetica, sans-serif]"Behold an ultimate immersive 3D performance" with SILVERSTAR®, Vutec's patented high-gain (6.0), high contrast, vivid color reproduction, and 180º viewing area. SilverStar's specialized 3D technology was first pioneered in 1980's. Enjoy an unparalleled experience with Vutec's innovative 3D ready screens for both active and passive projection.[/FONT][/FONT]