Patent ID: 6163402
Filing Date: 2000-12-19
Classification: G03B

Abstract:
A projection screen assembly for displaying a projected image, comprising:a diffuser including particles dispersed within a binder, the particles and the binder having different refractive indices, the diffuser diffusing light of the projected image having an initial polarization state incident on and transmitted through the diffuser to a cone of angles while substantially preserving the initial polarization state of the diffused light, the diffuser further at least partially depolarizes a portion of the light of the projected image that is laterally scattered in the diffuser such that the laterally scattered light is transmitted through the diffuser with a component of light having a different polarization state than the initial polarization state; anda polarizer disposed to receive light transmitted through the diffuser, the polarizer substantially transmitting light of the initial polarization state and substantially absorbing light of the different polarization state.