The projector and your seating must also be centered in front of the screen. If you were to place your projector on a table or ceiling mount it in front of an ALR screen, you would only see the light coming from your projector. It “rejects” ambient lighting by reflecting it back so that it’s not visible on the screen. What Is an ALR Projector Screen?ĪLR screens are equipped with ambient light-rejecting technology, which only displays light from sources directly in front of it. So, you can use your projector in a well-lit room and still be able to clearly see the image. Light-reflecting screens combat spotlighting using anti-glare technology by using repeated optical structures, meaning the screen’s surface is not smooth, even if it appears to be to the naked eye. This phenomenon is called spotlighting, which describes bright spots on the screen, making it difficult to see the image.įor instance, you may see a reflection of your lamp’s light or the sun’s rays coming through the window. You may find the colors aren’t as bright as usual and that you struggle to see detailed images.Īdditionally, projector screens that don’t have light-reflecting technology often have a noticeable glare when used in a brightly-lit room. The ambient light fades out the image, making it appear darker and less vivid. Using a projector in a well-lit room will cause even the brightest units to look dimmer than they would in a dark room. Light rejection is important to ensure a bright and high-contrast projector image. Why Is Light Rejection Important in Projector Screens? Differences Between ALR and CLR Screens.How Do You Use an ALR Projector Screen?.Why Is Light Rejection Important in Projector Screens?.
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