A hogel is a component of a light-field hologram, specifically one that is computer-generated. It is classified as a small holographic optical element (HOE) and serves as a building block for larger holographic recordings.
While a hogel functions similarly to a standard hologram, it is characterized by a lower resolution and a pixelated structure. An array of these individual elements is used to form a complete holographic image, which is typically displayed using 3D free-viewing devices.