Patent ID: 7990614
Filing Date: 2011-08-02
Classification: G03B

Abstract:
1. A projection screen, adapted to reflect a projection light generated by a projector, comprising: a light absorbing layer; a light reflection layer, connected adjacently to the light absorbing layer; and a light transparent layer, disposed on the light absorbing layer and the light reflection layer, having a light incident surface, a total reflection surface, and a light emitting surface, wherein one end of the total reflection surface is connected adjacently to the light incident surface and another end of the total reflection surface is connected adjacently to the light emitting surface, wherein the light incident surface provides a theoretical light convergence point, the theoretical light convergence point is in mirror symmetry with the location of the light reflection layer relative to the total reflection surface, wherein the projection light of the projector is capable of entering into the light transparent layer through the light incident surface to be refracted thereon, traveling to the total reflection surface to be totally reflected thereon, and traveling to the light reflection layer to be reflected to the light emitting surface of the light transparent layer.