| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hologram having authenticating information, recorded in such a way that the information is hard to view, in normal viewing state and has high prevention effects against counterfeiting. <P>SOLUTION: In a 3D image-reconstructing hologram 10, a minute object 11 that represents authenticating information is located behind a shielding block 12 of visually easy-to-recognize size, so that the authenticating information is hidden by the shielding block 12 in a given viewing direction and is not exposed to view, but can be viewed from another direction which is different from the given direction. <P>COPYRIGHT: (C)2009,JPO&INPIT |
