Light from above is absorbed, while light from the sides is alsoĪbsorbed and/or reflected toward the other side of the room. Into the screen that reflects light from below straight back toward the viewers In this case, there is a microscopic lenticular structure built The VAVA 4K Laser, you need a special type of ALR screen specifically designedįor UST projectors. If you have an ultra-short-throw (UST) projector, such as Viewing area while reflecting light from other directions away from the viewing An ALR screen reflects the projector’s light into the viewing area while reflecting light from other directions away from the viewing area.Īn ALR screen reflects the projector’s light into the Reflected toward the floor if it comes from the side of the room, it’s For example, if light comes from overhead, it is Hits the screen at a steep angle, it is reflected at an equally steep angle in Reflected at the same angle back to the viewing area. So, if lightįrom a projector across the room hits the screen at a shallow angle, it’s The angle of reflection equals the angle of incidence (see Fig. Many ALR screens rely on a basic principle of optics: Viewers while making sure that light from other directions is not reflected Throughout the room along with light from the projector, greatly reducing theĬontrast and completely washing out the image.Īn ALR screen reflects the projector’s light back toward the
As a result, light from windows and lamps is reflected from the screen Hits them in virtually all directions at once these are known as diffusive Basic projection screens reflect any light that The most effective antidote to ambient light is an ambient So badly that you can’t make out what it’s supposed to look like.įortunately, there are ways to mitigate the effects ofĪmbient light so that projected images still look great, even in brightly lit Lamps-can kill the quality of a projected image on the screen, washing it out Room-say, from a window during the day, overhead lights, and/or floor and table Projectors have their own kryptonite: ambient light. Projectors are unbeatable for offering huge video images atįar less cost than comparably sized flat-panel TVs.
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