| 摘要 |
A privacy screen, an image separating screen suitable for creating stereoscopic images, and an image interlacing screen also suitable for use in creating stereoscopic images, are prepared by modifying a standard microprism sheet (1) of the type having a plurality of v-shaped grooves (2). The modifications may include altering the transmission properties of at least one surface (3, 4) of each groove (2) in such a manner that light transmitted in different directions has different properties, for example by attenuating light in one plane (3) and not in the second plane (4) to create a privacy screen, or by altering polarizations in at least one of the two planes (3,4). |
