![]() ![]() ![]() Lieth and Upatnieks reached a key milestone with the off-axis transmission hologram. However, things changed dramatically after the invention of the laser in 1960, with coherent light, leading to a revival of the field. Holography remained somewhat obscure owing to its dependence on special coherent light. These introduced the notion of storing 3D information as a diffractive interference pattern that can subsequently be reconstructed through illumination. The foundations of holography were laid by Dennis Gabor, a Hungarian scientist working in the UK, in a patent and a series of papers written between 19 that were aimed at microscopy. Diffraction can reproduce both refraction and reflection effects, making it a powerful optical phenomenon.Īnatomical Medical Image with 3 channels. Diffraction occurs when light scatters from structures that are the same size or smaller than the light. Most of us are familiar with the notion of reflections off a mirror and the refraction or bending of light in water. So, what is holographic 3D? The scientific definition of holography is image creation using the physical principles of diffraction. This is unlike a photograph, which only stores brightness, without a sense of direction, thus yielding a two-dimensional representation. Holograms are able to capture and reproduce both the brightness and direction of light emerging from a 3D object or scene. The term ‘hologram’ is derived from the Greek meaning ‘whole image’. Every science-fiction fan, not to mention the scientific community, knows that the best way to make 3D images is using holographic or similar techniques. ![]() True 3D visualisation has been theorised about and fantasised over for the past fifty years. ![]()
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