TRANSMISSION SCREEN, PROJECTION DISPLAY UNIT, AND METHOD FOR DISPLAYING IMAGE

摘要

A transmission screen has a light incidence plane side Fresnel lens (32) which curves image light from a illuminant to a display side by means of a prism formed at a rear side corresponding to a light incidence plane side of the image light, a first light diffusion section (31) which is arranged at a location closer to the display side than the light incidence plane side Fresnel lens (32) to diffuse the image light from the light incidence plane side Fresnel lens (32), a second light diffusion section (41) which is arranged at a location closer to the display side than the first light diffusion section (31) to diffuse the image light from the first light diffusion section (31) for emission to the display side while a relative position to the first light diffusion section (31) is displaced, and a second substrate (43) which is arranged at a location closer to the display side than the second light diffusion section (41) to hold the second light diffusion section (41).