| 摘要 |
<p>PROBLEM TO BE SOLVED: To raise the level of technical difficulty of forgery and falsification of a light diffracting structure of a hologram or the like, to ensure an enhanced authenticity of an information recording medium or a card having the light diffracting structure of the hologram or the like and further to give an external appearance different from usual ones to the information recording medium or the card having the above structure. SOLUTION: A transparent part 3 is formed in a part of a base 2 of an information recording body such as the card 1, and the light diffracting structure body such as the hologram 4, or preferably a double laminate hologram, is laminated on the transparent part 3. Thereby the information recording medium, the card and the light diffracting structure body used therefor which make it possible to see an image of the hologram 4 or the like from both the front and rear sides and to visually recognize different images in the front and the rear according to the type of a light-reflective layer, can be provided.</p> |
