About 100 Inch ALR Projector Screen

A 100-inch ALR (Ambient Light Rejecting) projector screen paper is a specialized high-tech surface designed to provide a cinematic experience in rooms where lighting cannot be fully controlled. Unlike traditional matte white screens that scatter light in all directions, ALR material uses advanced optical layers to selectively reflect the projector's light toward the audience while "rejecting" or absorbing overhead and side lighting.Key Features and PerformanceLight Suppression: Most 100-inch ALR screens utilize a lenticular or Fresnel microstructure. These microscopic "sawtooth" or circular patterns act as a physical filter, blocking up to 90%–95% of ambient light.Contrast & Color: By preventing ambient light from washing out the image, ALR screens significantly deepen black levels and maintain color saturation. This results in a "Laser TV" effect where the image remains vivid even with the lights on.Material Design: "Screen paper" or fabric versions often consist of PET fabric coated with a metallic or high-density fiber layer. They are typically lightweight, moisture-resistant, and can be rolled up for easier transport compared to rigid panels.Technical ConsiderationsFeatureStandard ALR PaperHigh-End Fixed ALRGain0.8 to 2.5 (High gain versions)0.5 to 1.2 (Reference quality)Viewing Angle30° – 40° (Narrow)160° – 180° (Wide)CompatibilityStandard/Long ThrowUltra Short Throw (UST)Note: Many "paper-style" ALR screens are retro-reflective, meaning they reflect light back to the source. These require the projector to be positioned at eye level behind the viewer for maximum brightness. Conversely, screens designed for Ultra Short Throw (UST) projectors use a different serrated structure to reflect light coming from below.Installation TipsMost 100-inch screen "papers" arrive rolled to prevent creases. To achieve a perfectly flat surface, they are often used with a DIY frame or tensioned using springs or velcro. If creases are present from shipping, they can often be removed using a garment steamer on a very low heat setting from the back of the material.