| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a unidirectional see-through shield which prevents moire due to a periodic array of through-holes, also prevents generation of shading irregularities when the through-holes are non-periodically arranged in order to prevent the moire, to compatibly prevent the moire and the shading irregularities. <P>SOLUTION: For a unidirectional see-through shield 10, a planar view shape of a light shielding base material 1 provided with many through-holes 2 presents a mesh pattern 1P, the mesh pattern forms many openings A corresponding to the through-holes and is formed of many boundary line segments L extending between two branch points B and forming the openings, an average value N of the number of boundary line segments extending from one branch point is 3.0≤N<4.0, and the pattern includes an area where there is no direction in which the openings are arranged in a fixed repetition cycle. <P>COPYRIGHT: (C)2013,JPO&INPIT |
