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

  2. the three types of projection screens in comparison