| 摘要 |
PURPOSE: A screen of rear surface projection for displaying a three-dimensional image is provided to minimize the effect of external light while maintaining the polarized light characteristic of projecting beam. CONSTITUTION: A beam passing through a lenticular lens array(18) proceeds by being refracted for plural directions according to the surfactant shape of a hologram layer(14) after transmitting a substrate(12). Then, the beam maintains a polarized characteristic after passing through the holographic layer. Therefore, a cross torque is prevented, because a left-eye image and a right-eye image are separated by polarized spectacles(20). Moreover, a black stripe mask(16) is attached on the surface of the hologram layer for preventing the absorption of external light. Herein, the black stripe mask is attached on the location corresponding to the edge unit of the lenticular lens array. Thus, the external light is absorbed for improving the brightness and the contrast of an image. |
