Patent ID: 7440186

Claim:
A screen having a Fresnel lens sheet, on which light from a picture source is projected, the screen comprising: a first total reflection prism portion, which is provided on a side of the Fresnel lens sheet toward the picture source and by which light incident at a first incident angle range is reflected to a first direction substantially perpendicular to the Fresnel lens sheet to outgo; a second total reflection prism portion, which is provided on the side of the Fresnel lens sheet toward the picture source and by which light incident at a second incident angle range smaller than the first incident angle range is reflected to a second direction toward an optic axial center of the Fresnel lens sheet to outgo; a first refractive prism portion, which is provided on a picture seen side of the Fresnel lens sheet and by which at least light of a smaller incident angle than the second incident angle range is refracted to outgo to the first direction; and a second refractive prism portion, which is provided on the picture seen side of the Fresnel lens sheet and by which light outgoing from the second total reflection prism portion to be directed to the second direction is refracted to outgo to the first direction.