Patent ID: 7961390

Claim:
A screen, adapted to a projector, comprising: a substrate, having a surface facing the projector and a plurality of light absorbing zones and a plurality of reflective zones alternatively disposed on the surface; and a plurality of asymmetric optical structures, disposed on the surface of the substrate and corresponding to the reflective zones respectively, and each of the asymmetric optical structures comprising: a first curved surface, protruded toward the projector for converging an incident light from the projector on the reflective zone, and the reflective zone reflecting the incident light to form a reflective light, wherein the incident light is incident on the surface of the substrate obliquely; a second curved surface, disposed at a side of the first curved surface away from the projector for refracting the reflective light and allowing the reflective light to transmit toward the normal direction of the surface of the substrate, wherein a curvature radius of the first curved surface is greater than a curvature radius of the second curved surface.