The Holograms Image Map

A typical layout for producing a transmission hologram is shown in the following animation. All components must be placed in a vibration-free environment. This is because any movement--even one as small as 0.1 micron--will completely obliterate the image.

Making a Hologram Animation

The laser light is divided in two with a beamsplitter. One of the split beams, the reference beam, is directed towards the film with a mirror and expanded with a lens so that light uniformly covers the film. The other split beam, the object beam, is similarly directed with a mirror and expanded with a lens such that light uniformly covers the object to be holographed.

The light reflected off the object produces a complicated wavefront that contains information about the location, size, and shape of the object. Some of this reflected object beam meets the reference beam and forms an interference pattern in the film that is a unique representation of that object.

After the film is developed, the three-dimensional image can be reconstructed with light directed towards the holograms at the same angle as the reference beam.

| the holograms 1 | the holograms 2 | the holograms 3 |
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