Editing Silver screen (section)

==Use in 3D projection==
{{Refimprove section|date=June 2022}}
Silver lenticular screens, while no longer employed as the standard for motion picture projection, have come back into use as they are ideally suited for modern [[Polarized 3D system|polarized 3D projection]]. The percentage of light reflected from a non-metallic (dielectric) surface varies strongly with the direction of [[Polarization (waves)|polarization]] and the angle of incidence; this is not the case for an electric conductor such as a metal<ref>[http://www.physics.usyd.edu.au/pdfs/current/sphys/3yr_lab/Expt_26.pdf Reflection 2.2: Fresnel equations for reflection from a dielectric surface]</ref>  (as an illustration of this, sunlight reflected from a horizontal surface such as a reflective road surface or water is attenuated by [[polarizer|polarized]] [[sunglasses]] relative to direct light; this is not the case if the light is reflected from a metallic surface). As many 3D technologies in use today depend upon maintaining the polarization of the images to be presented to each eye, the reflecting surface needs to be metallic rather than dielectric.

Additionally, the nature of polarized 3D projection requires the use of interposed filters, and the overall image is consequently less bright than if it were being normally projected.  Silver lenticular screens help compensate by reflecting more light back than a "modern" screen would&mdash;the same purpose they originally served in the early days of motion pictures{{Citation needed|date=January 2010}}.