Maxlight ALR FR Fixed Frame Fresnel UST Projector ScreenThe Maxlight FR Fresnel series screen is an ALR (ambient light rejecting) screen for Ultra Short Throw projectors. By utilising its multi layer optical design, ambient light from the top and both sides of the screen are efficiently rejected; meanwhile, the Fresnel structure helps increase the image brightness by a gain ratio of 1. 3. FR Fresnel screens deliver a bright, vivid, high contrast image with their ALR capability and high image gain. Maxlight