What is the difference between heliodisplay and holographic display?

Answer 1

There are many difference between heliodisplay and holographic display. like ,

Heliodisplay:

The Heliodisplay is an air-based display using principally air that is already present in the operating environment (room or space). This is similar in principle to the cinematic technique of rear projection and can appear three-dimensional when using appropriate content. As dark areas of the image may appear invisible, the image may be more realistic than on a projection screen, although it is still not volumetric. However the system does allow for multiple viewing and dual viewing (back and front) when combined with two light sources.The air-based system is formed by a series of metal plates, and the original Heliodisplay could run for several hours although current models can operate continuously.

Holographic display:

Holographic display is a type of display technology that has the ability to provide all four eye mechanisms: binocular disparity, motion parallax, accommodation and convergence. It involves the use of a laser, interference, diffraction, light intensity recording and suitable illumination of the recording. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the image appear three-dimensional.