Patent ID: 7193777

Claim:
A projection screen for displaying an image by reflecting imaging light that is projected from an observation side, the projection screen comprising: a polarized-light selective reflection layer that selectively reflects a specific polarized-light component, wherein the polarized-light selective reflection layer comprises two or more partial selective reflection layers, made of organic films, wherein the partial selective reflection layers themselves have a diffusing property and have a cholesteric liquid crystalline structure, a structural non-uniformity of which reflects in diffused directions the specific polarized-light component and wherein the cholesteric liquid crystalline structure of each of the partial selective reflection layers comprises a plurality of helical structure parts that are different in helical axial direction, layered one over another, and, of these partial selective reflection layers, a first partial selective reflection layer for reflecting light in a wave range for a color that is most readily absorbed by an organic film is arranged as the outermost layer on the observation side.