Vortex optical/diffusion rear projection screen. A 0.5 mm Fresnel lens gathers the light from the projector and directs it at a right angle through the screen. As the light exits the screen on the audience side, a diffusion medium redistributes the light evenly in all directions—up, down, left, right and center. Superior resolution and color contrast.An exceptionally wide viewing cone in both the horizontal and vertical axes.Extraordinary center-to-corner brightness ratio. Uniform brightness without hot spots.Gain 2.0 (see Gain Chart link at right)The Vortex is designed to be used with single lens projectors.Projected light is collimated, then diffused evenly, making the Vortex well suited for use in videowalls and rooms with tiered seating patterns.Charcoal grey tint provides superior color contrast, even under harsh ambient light.The diffusion medium is in the acrylic, so it can’t be scratched or damaged.The Vortex is available in sizes up to and including 120" diagonal.Can be used in our Retro/QA (portable rear projection systems), MultiScreen System, RPX/Complete or any of our VideoWalls in conjunction with our Projector Support Structure.Factory installed Cineframes® are also available to simplify installation.Warranted for one year against defects in materials and workmanship.