Projectors and projection screens have evolved in recent years with higher-lumen and gain capabilities that make it easier to view lessons and presentations even in bright rooms and lecture halls. When students can see the lesson material better, learning becomes a more dynamic experience. If the screen is washed out by lights or the room must be darkened to a slumber-inducing level, learning is hindered. Many universities and classrooms, however, are still using outdated projection screens and older projectors, primarily due to budgetary constraints. Upgrading an A/V system can be an expensive proposition considering that a 4K or high-lumen projector can cost $5,000 or more.
A cost-effective solution for increasing the clarity and brightness in classroom projection systems is to keep the existing projector but upgrade to an Ambient Light Rejecting (ALR) screen. ALR screens divert ambient light away from the viewer’s field of vision to produce bright images in rooms where lighting is difficult to control. Ambient light is a light source other than what’s produced by the projector (i.e., artificial lighting, light streaming in from untreated windows, etc.) and can wash out the image projected on the screen.
Gain is a measurement of the reflectivity of projections screens. The lower the gain, the lower the brightness; the higher the gain, the higher the brightness. Lower gain screens diffuse light more evenly over a wider angle of view and tend to have wider viewing angles. High gain ALR screens have a lower viewing because brightness is greatest in the center and the viewing angle drops off as viewers move off the center axis.
Crystal Screens uses patented technology that is unique to other ALR screens in that our technology can produce a high gain screen with a wide viewing angle. Holographic patterns are embedded on the screen that manipulate light energy to produce a highly reflective surface. With our material, the vertical directivity is controlled while the horizontal viewing angle is completely uniform. Less light is directed at the ceiling or the floor, but more light can be reflected horizontally. The technology results in screens with high gain and ambient light rejection, wide viewing angles, and no hot spots. Our Reflect 3.0 projection screen offers 3.0 gain. Most matte white screen manufacturers claim gain around 1.0, so the difference in brightness and clarity is striking.
For universities and classrooms on tight budgets, Crystal Screens offers a cost-effective way to increase image brightness without dimming the lights or upgrading to cost-prohibitive projectors. The screen also performs well on moderately-priced projectors. Fixed frame designs mount easily in classrooms and lecture halls and are available in standard and custom sizes. Even more surprisingly, our screens are priced below other ALR screens that cannot claim the same high gain and wide viewing angle.
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