3D holograms provide many functionalities such as digital recording and reconstruction. 3D holograms are projections that can exist freely in space and are visible without the need for 3D glasses to the naked eye. Photographic records of 3D scenes that capture the whole light field are referred to as three-dimensional (3D) holograms. In essence, the two light sources interact and generate diffraction, which results in a three-dimensional image. A second light reflects on the object, causing interference between the two sources. A light source is projected onto an object’s surface and scattered. The way 3D Holographic Technology works is by giving the appearance of three-dimensional pictures. However, 3D Holographic Technology has come a long way since the 1980s, due to the widespread availability of low-cost solid-state lasers in consumer electronics such as DVD players. Scientists from the United States and the Soviet Union developed 3D Holographic Technology (3DHT) in 1962. However, until the 1960s, when laser technology was perfected, the technique was not enhanced significantly. In 1947, Dennis Gabor, a Hungarian physicist working on electron microscope development research, created the basic technology of holography.
Wavefront reconstruction is a technical term for holography. The word hologram is made out of two Greek words: “holos” which means “complete view,” and “gramme” which means “written.” A hologram is a three-dimensional representation of positive laser light wave interference. 3D Hologram market has become a centre of attraction following an announcement, which depicts 3D holographic conferencing as a possibility.