| 摘要 |
An identification card with a holographic security safeguard in the form of a large area Lippmann-Bragg hologram recorded on a layer or sheet-like carrier disposed on a face of the identification card, capable of being read out without the use of laser light, employing merely normal light sources which produce incoherent light, whereby an image can be observed with the naked eye, and which can contain both binary and analog information, comparable, for example, with printed and other information contained on the identification card; and a method of producing such a card. |
