Introduction
Holography is a technique to record the light field, and reconstruction, when the original field no longer exists. It is similar to recording where the sound field is in such a way that it can later be copied code.
Type Of Holograms
3D three-dimensional holograms are holograms, digital three-dimensional hologram, hologram 2D/3D, dot-matrix hologram hologram and different types of restructuring to improve security. As hidden text, text-micron, kinetic sculpture ridge, true color / photo, flip-flop/switching/multi-channels, pure white, flash play assistant secuity feature will also improve security.
How to Create Holograms
Object and reference beam must be able to produce interference patterns, that is made in the stability of the holographic record time. To do this, they must have the same frequency and the same relative stage of this period of time, that is, they must be mutually consistent. Many laser beam satisfy this condition.
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