Screen, Fresnel lens sheet used for the same, and image display apparatus using the same

摘要

The present invention provides a screen suitable for reducing the longitudinal dimension of a set. The present invention includes two prism sections. One is a totally reflective prism section ( 10 ) provided at the image generation source side of a Fresnel lens sheet ( 6 ). The other is a refractive prism section ( 11 ) provided at the image-watching side of the Fresnel lens sheet. The refractive prism section ( 11 ) includes a refractive face (e) for refracting incident light and making the light exit toward the image-watching side, a plane (f) approximately parallel to the principal plane of the Fresnel lens sheet, and a connection face (g) for continuously forming the face (e) and the plane (f).