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Hogel
Part of a light-field hologram

Hogel

A hogel is a part of a light-field hologram, in particular a computer-generated one.

It is considered a small holographic optical element or HOE and that its total effect to that of a standard hologram only that the resolution is lower and it involves a pixelated structure. An array of these elements form the complete image of a holographic recording, which is typically displayed in 3D free-viewing device.

Text adapted from Wikipedia, CC BY-SA 4.0. Photograph: Johann Jaritz (see Commons), Wikimedia Commons.