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A glass bead screen is a type of projection screen used in optics. It is designed to display images from an optical projector. The screen's surface is covered with many tiny beads, which are typically on a canvas backing.1

This type of screen is highly directional, meaning it reflects the maximum brightness of the projected image back towards the light source (the projector). This directional reflectivity makes glass bead screens particularly suitable for use in smaller rooms, such as for home movie screenings. They can also help reflect ambient room light away from the viewer, making the projected image appear brighter and clearer even in daylight.12

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