Patent ID: 7719762

Claim:
A transmitting-reflecting projection screen for displaying images on its both sides by reflecting and transmitting imaging light projected, comprising: a reflection-type screen that reflects a specific polarized component of imaging light projected, and a transmission-type screen that transmits a polarized component of the imaging light having passed through the reflection-type screen without being reflected, the polarized component being different from the specific polarized component, wherein: the reflection-type screen comprises a polarized-light selective reflection layer that selectively reflects the specific polarized component; the polarized-light selective reflection layer has a cholesteric liquid crystalline structure; the transmission-type screen comprises a rear-side diffraction layer that diffracts the light having passed through the reflection-type screen without being reflected; the rear-side diffraction layer is formed with a transmission-type volume hologram, and has the function of diffusing light; and the transmitting-reflecting projection screen is configured to display the images on its both sides by reflecting and transmitting the imaging light projected.