| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a screen capable of advancing efficiently a light from a projector at a proper angle distribution, and capable of obtaining an image of high precision and high contrast. <P>SOLUTION: The screen 1 includes a plurality of concaves 8 of concave shape arrayed on a plane, and the concaves are arrayed to increase pitches of the concaves in a radial direction around a reference point A as the center, along with separation from the reference point on the plane or an extended plane of the plane. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
