| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent forgery of a hologram and to suppress illicit use of a hologram by using a fluorescent dye in the hologram. SOLUTION: In the hologram, having at least a hologram forming layer 2 and a reflection thin film layer 3 on a support layer 1, at least one layer or interlayer region in the hologram structural layers including these layers contains an organic fluorescent dye, which is excited by IR rays and emits light in the IR region.</p> |
