PROJECTOR SCREEN USING HOLOGRAM

摘要

PROBLEM TO BE SOLVED: To provide a projector screen which has high luminance and can be observed in the front without any trouble by using a hologram and reducing decrease in the contrast of a display image due to unnecessary light other than projection light. SOLUTION: This projector screen 20 directs the light projected and image- formed by a projector, in a reflection direction by scattering and reflection, and has a hologram layer 21 for unicolor or multicolor recording which diffracts the projection light 25 from the projector arranged before slantingly to the normal of the screen 20 into a specific eye box in front of it as scattered and diffracted light 26, a layer 22 which is provided on the side of the projection light incidence and has a reflection preventing or nonglaring function, and a light absorbing layer 23 which is provided on the opposite side from the side of projection light incidence and black or in a color corresponding to it.