Patent ID: 7158297

Claim:
A projection screen for displaying an image by reflecting imaging light that is projected from an observation side, the projection screen compnsing: a polarized-light selective reflection layer that selectively diffuse-reflects a specific polarized-light component; and a polarization-maintaining light-diffusing layer provided on an observation side of the polarized-light selective reflection layer, the polarization-maintaining light-diffusing layer diffusing imaging light which the polarized-light selective reflection layer diffuse-reflects, while maintaining a state of polarization of the imaging light, wherein the polarized-light selective reflection layer itself has diffusing properties, the polarized-light selective reflection layer has a cholesteric liquid crystalline structure and, owing to structural non-uniformity in the cholesteric liquid crystalline structure, diffuses the specific polarized-light component, and the cholesteric liquid crystalline structure contains a plurality of helical structure parts whose helical axes extend in different directions.