What is Hologram?

A hologram is a three-dimensional image created by the interference of light beams from a laser or other coherent light source. Unlike traditional 2D displays, holography captures both the amplitude and phase of light waves, enabling the recreation of a fully 3D representation of an object that can be viewed without special glasses.
Holograms provide a volumetric display where images appear to float in space, offering parallax and depth perception. This technology is widely used in augmented reality (AR), medical visualization, advertising, security systems, and immersive storytelling.

How It Works?

Holography works through coherent light wave manipulation:

1. Recording Phase: A laser beam is split into two — reference beam and object beam. The object beam reflects off the subject and interferes with the reference beam on a recording medium, creating a holographic interference pattern.
2. Reconstruction Phase: The interference pattern is illuminated again, reconstructing the light field to form a 3D floating image.
3. Projection Setup: Modern methods use Pepper’s Ghost, transparent LCDs, or HoloFans to display holographic visuals.
4. Interactivity: Integrated sensors or AI vision systems allow for gesture-based and voice-controlled interaction.