Patent ID: 7212339

Claim:
A transmissive screen used for a rear projection type image display apparatus, comprising: a first sheet having a Fresnel lens formed on a light exit surface thereof; a second sheet having plural lens elements formed on a light incident surface thereof, the plural lens elements diffuse light from said first sheet; a first diffusion layer formed of an adhesive material containing a light diffusion material for diffusing light and positioned on a light exit surface of said second sheet; and a second diffusion layer formed of an adhesive material containing a light diffusion material for diffusing light and positioned on a light exit surface of said second sheet; wherein, said second diffusion layer is set in a position in a viewer side direction of said first diffusion layer, the position being separate at a set distance from said first diffusion layer; and said transmissive screen is configured to satisfy the expression: T D =t D *θ 2 , where: θ 2 is the half-value light divergence angle of said second diffusion layer; t D is said set distance; TD is a light diffusion width given by said second diffusion layer.