Silver screen

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A silver screen is a special screen for a slide projector , film projector or video projector . The surface coated with metal-pigmented lacquer ( aluminum ) offers less light scattering than a conventional white wall, which means that it has a higher degree of reflection in a limited solid angle than a Lambertian radiator or an ideally diffusely scattering surface would.

With a suitable sitting position, the brightness of the picture is greater than with a white screen. Alternatively, there were and still are retroreflective canvases that use a coating made of glass beads for a similar effect. However, they reflect towards the source and have an even smaller viewing angle.

With a suitable coating structure of the silver screen, the light is reflected without changing the plane of polarization , which is why silver screens are necessary for those spatial image projections that are based on the different polarization of the light of the two 2D images.

Individual evidence

1. ↑ http://harkness-screens.com/digital-3d-projection-surfaces-spectral240.html
2. ↑ https://www.test.de/Beamer-Die-Projektoren-kommen-1173522-1173529/ the three types of projection screens in comparison