Patent ID: 7965443

Claim:
A light transmission control system, comprising: a combination of a display and a first polarizer, said combination comprising linear polarizing means for linearly polarizing light, said first polarizer comprising an ellipticity increaser, said ellipticity increaser configured and oriented with respect to said linear polarizing means such that light of at least one visible wavelength passing from said linear polarizing means through said ellipticity increaser has a first ellipticity of higher than 0.5; and a second polarizer spaced away from said first polarizer and comprising an ellipticity adjuster and a linear polarizer, said ellipticity adjuster oriented with respect to said linear polarizer such that light of said at least one visible wavelength passing from said linear polarizer through said ellipticity adjuster has a second ellipticity of higher than 0.5, said ellipticity increaser and said ellipticity adjuster disposed between said linear polarizing means and said linear polarizer, said ellipticity increaser and ellipticity adjuster configured and oriented with respect to each other such that light of said at least one visible wavelength passing from said linear polarizing means through said ellipticity increaser and said ellipticity adjuster to said linear polarizer has a polarization ellipse with a third ellipticity of less than 0.5, a major axis of said polarization ellipse being substantially perpendicular to a transmission axis of said linear polarizer.