Patent ID: 7023616

Claim:
A screen for allowing light generated by a light source and modulated by a picture display device having pixels extending in a vertical and in a horizontal direction and laid out to form a matrix to produce an image thereon to be projected on said screen as an enlarged picture, said screen comprising: a Fresnel lens sheet forming Fresnel lenses at an emission side of said light; a first member disposed for receiving light emitted from said Fresnel lens sheet and having light passing units formed at a light emission side of said first member, and a plurality of light absorbing portions, one of the light absorbing portions being provided between said light passing units; and a second member placed on said emission side of said first member and adhered to said first member; wherein a pitch in the vertical direction of the pixels projected and enlarged on said screen from said image produced by said picture display device is at least twice of a pitch of said Fresnel lenses formed on said Fresnel lens sheet; and wherein a ratio (Lp/Fp) between a pitch Lp of said light absorbing portions and a pitch Fp of said Fresnel lens is within a range of 1.558 to 1.649.