What is a holographic display?
Holograms were actually discovered by mistake by Dennis Gabor back in 1948. He was attempting to improve on the quality of electron microscopy when he discovered the concept of holography, which relied on the constructive interference properties of light. He coined the term hologram from Greek, which means “full information” or “full record”. The word hologram has evolved since then to capture the imagination of the world, thanks in particular to special effects in movies and television. Now, a holographic display means many things, and the term is abused badly in the industry. But a holographic display, in the truest sense, is a re-creation of light in the same way that we experience it in real life.
A particular type of holographic display is called a light field display, which is one of the most efficient technological approaches that retains the critical properties for a compelling viewer experience. Similar in concept to a magnetic field, a light field describes all of the visible light in a volume of interest. If a light field display is of sufficient quality, it is a holographic display.