As a new interactive mode, why is holographic projection not widely used?

Holographic projection is fascinating, and consumers are also very novel about this technology. It can be said that its prospect is bright, but there is also a hidden worry, that is, its expensive price and strict use environment seriously hinder its universality of application. Ordinary photography is two-dimensional plane sampling, while holographic projection imaging is multi-angle photography, and these photos are superimposed. In order to realize stereo "superposition", it is necessary to use the interference principle of light to irradiate with a single light (commonly used projector), so that the light reflected by the object can be split into multiple coherent beams, and these coherent beams can be superimposed to realize holographic stereo images. Holographic image production needs more than 1 times of information than ordinary camera processing, which puts forward high requirements for shooting, processing and transmission platforms. Holographic technology is a technology that uses the principles of interference and diffraction to record and reproduce the real three-dimensional image of an object. The first step is to record the light wave information of the object by using the interference principle, which is the shooting process: the photographed object forms a diffuse object beam under laser irradiation; The other part of the laser beam, as a reference beam, hits the holographic negative and interferes with the object beam, converting the phase and amplitude of each point on the object light wave into spatially varying intensity, so as to record all the information of the object light wave by using the contrast and interval between interference fringes. The negative recording interference fringes becomes a hologram, or hologram, after being developed and fixed. The second step is to reproduce the light wave information of the object by using the diffraction principle, which is the imaging process: the hologram is like a complex grating. Under the irradiation of coherent laser, the diffracted light wave of a linearly recorded sinusoidal hologram can generally give two images, namely the original image (also known as the initial image) and the yoke image. The reproduced image has strong stereoscopic effect and real visual effect. Each part of the hologram records the light information of each point on the object, so in principle, each part of the hologram can reproduce the whole image of the original object. Through multiple exposures, multiple different images can be recorded on the same negative, and they can be displayed separately without interference.