Holographic Applicatons

Holography is a technique of recording the whole information of an object by using a reference beam which is combined with the light from the object (an object or scene beam). If these two beams are coherent, optical interference between the reference beam and the object beam, due to the superposition of the light waves, produces a series of intensity fringes that can be recorded on standard photographic film. The fringes form diffraction grating called hologram. When viewed from different angles or changing orientation it seems the object is still present and the image appears three dimensional. It is a lens less image recording technique. Hologram and holographic products are used in various products like currency, credit cards, etc. Also it is applied to combat counterfeit, for security purpose, for attractive product packaging and so on

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