Polarizer constructions and display devices exhibiting unique color effects

Abstract

A polarizer construction is disclosed that includes a reflective polarizer disposed on a first side of the construction to transmit light having one polarization and reflect light having an orthogonal polarization, and one or more colored dichroic polarizers disposed on a second side of the construction. The one or more colored dichroic polarizers are arranged so that when the construction is illuminated from the first side, an observer viewing the construction from the second side will observe a first spectral distribution of visible light, and when the construction is illuminated from the second side, an observer viewing the construction from the second side will observe a second spectral distribution of visible light different from the first spectral distribution. Various display constructions using colored polarizers to achieve color changing and image reversal effects are also disclosed.

What is claimed is:  
     
         1 . A projector system comprising: 
 a projector engine that emits a first spectral distribution of light having a first polarization state and a second spectral distribution of light having a second polarization state;    a screen disposed to display light emitted from the projector engine; and    one or more colored polarizers disposed between the projector engine and the screen, wherein the one or more colored polarizers are arranged to substantially transmit light in the first spectral distribution having the first polarization state, to substantially transmit light in the second spectral distribution of light having the second polarization state, and to substantially absorb other visible light.