| 摘要 |
A projection television (10) has image projectors (14, 16, 18) and optics for projecting images of different colors, producing a quantity of scattered light that is incident upon at least a portion of a projection screen (22). The projection screen (22) includes a three-dimensional hologram (26) disposed on a substrate (24) and representing a three-dimensional interference array that receives images from the projectors (14, 16, 18) on a first side and displays the images on a second side with controlled light dispersion of all the displayed images. The screen (22) is specifically configured to exclude a high proportion of light that is incident from angles other than normal to the screen (22), substantially eliminating the effects of the scattered light and improving image contrast. |
