| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a volume hologram for a thread hologram having high durability with which a high-definition optical image can be obtained. <P>SOLUTION: The volume hologram for a thread hologram comprise a first protective layer made of a resin material, a volume hologram layer formed on the first protective layer, and a second protective layer made of a resin material, wherein the resin material used for the first protective layer is identical with the resin material used for the second protective layer. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
