Patent ID: 8416494

Claim:
A screen comprising: a diffusion layer that diffuses incident light; an elastic member that movably supports the diffusion layer with respect to a holding part; a driving unit that moves the diffusion layer in a direction perpendicular to an optical axis of light that is incident to the diffusion layer; and a plurality of the elastic member, one of which being arranged between a bottom side face of the diffusion layer and the inner face of the holding part, another one of which being arranged between a right side face of the diffusion layer and the inner face of the holding part, and another one of which being arranged between a left side face of the diffusion layer and the inner face of the holding part, wherein the diffusion layer is rectangular and is made from plastic material; the elastic member is arranged in a plane of the diffusion layer and at least between a top side face of the diffusion layer and an inner face of the holding part; and the driving unit is arranged in a bottom side face of the diffusion layer.