1. Optical holography
1.1 Principle
Optical holography is a technique for recording and reproducing three-dimensional images using coherent light, usually from a laser. It is based on the principle of interference between a reference beam and a beam illuminating the object, thus creating an interference pattern recorded on a photosensitive medium (Figure 1 a). Unlike conventional photography, which only captures light intensity, holography also records the phase of the light, allowing the relief and depth of the object to be faithfully reproduced. When a coherent light beam illuminates the recorded hologram, it recreates the original light wave, giving the illusion of a floating three-dimensional image (Figure...
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Optical holography
Microwave holography
Bibliography
Patents
There are over 100,000 references to patents relating to "Holographic Antenna" on Google Patents.
There are 50,951 references to patents relating to the terms "Holographic MIMO" in the same source.
Kymeta Corporation has filed 99 patents in the field.
The other main applicants are Chinese, mainly universities and research institutes.
Directory
Manufacturers – Laboratories – Suppliers – Distributors (non-exhaustive list)
Onera, DEMR, Palaiseau
Thales Limours (among others)
INSA and IETR, Rennes
XLIM, Limoges
LEME, Ville d'Avray
LEAT, Nice
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