Hologram is a three – dimensional image formed by the interference of light beams from a laser or other coherent source. It is formed when a point source of light of fixed wavelength encounters light of the same fixed wavelength arriving from an object. When the hologram is illuminated by the reference beam alone, the diffraction pattern recreates the wave fronts of light from the original object. Thus, the viewer sees an image indistinguishable from the original object.
Holograms are mainly classified into two categories –
Many variations can be made using these two types they are called hybrid holograms. Some types of hybrid holograms are Embossed holograms, integral hologram, multichannel holograms etc.
Uses of hologram –
Any company can use the hologram to enhance the image of their brand as a genuine and authenticated brand. They can be used for fancy packaging, security applications. Few common uses are –
They can also be used for military mapping and information storage.
There is great deal of research going on this field. Applications are changing lives, saving lives and stimulating creative and intellectual discussion.
We know that future is bright – it might be holographic.