Patent ID: 7262911

Claim:
A reflex-type screen for reflecting an image light projected from a projector at an angle with respect to an observer to a direction substantially perpendicular to the reflex-type screen, comprising: a base comprising white resin and including projector side inclined planes oriented so that the image light from the projector is incident on said projector side inclined planes, and non-projector side inclined planes oriented so that the image light from the projector is not incident on said non-projector side inclined planes, wherein said projector side inclined planes and said non-projector side inclined planes are alternately provided to form a saw-tooth appearance wherein said projector side inclined planes reflect the image light from the projector in a direction substantially perpendicular to the reflex-type screen, and wherein inclination angles of said projector side inclined planes, which are alternately provided, become gradually wider along a direction from a side near the projector toward a side far from the projector to reflect the image light to a direction substantially perpendicular to the reflex-type screen, the incident angles being different from each other depending on distances from the projector.