Who can tell me the technical principle of 360-degree holographic projection?

Holographic projection technology, also known as virtual imaging technology, is a technology that records and reproduces the real three-dimensional image of an object by using the principles of interference and diffraction. The first step is to record the light wave information of the object by using the interference principle, which is the shooting process: the object to be photographed forms a diffuser beam under laser irradiation; The other part of the laser beam, as a reference beam, hits the holographic negative and interferes with the object light beam, converting the phase and amplitude of each point on the object light wave into spatially varying intensity, thus recording all the information of the object light wave by using the contrast and interval between interference fringes. Negative recording interference fringes become holograms, or holograms, 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 waves of linearly recorded sinusoidal holograms can generally give two images, namely the original image (also called the initial image) and the conjugate image. The reproduced image has strong stereoscopic effect and real visual effect. Every part of the hologram records the light information of every point on the object, so in principle, every 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. The holographic principle of holographic display effect is that "a system can be completely described by some degrees of freedom on its boundary", which is a new basic principle based on the quantum properties of black holes. In fact, this basic principle is related to the quantum theory of combining quantum elements and quantum bits. Its mathematical proof is that there are as many quantum elements as there are dimensions of time and space; There are as many qubits as there are. Together, they form a finite set of time and space similar to a matrix, that is, their permutation and combination set. Holographic incompleteness means that there is duality among the selected permutation number, the selected empty set and the selected full permutation. That is, the holography of a certain dimension of space-time is completely equivalent to the holography with one less quantum bit arrangement number; This is similar to the "quantum error-avoiding coding principle", which fundamentally solves the problem of systematic calculation error caused by coding error in quantum calculation. The quantum computation of space-time is similar to the double conjugate coding of biological DNA, and it is a quantum computer that organizes real and imaginary, positive and negative double conjugate coding together. This can be called "biological spatio-temporal science", in which "entropy" is similar to "macro entropy", which refers not only to the degree of chaos, but also to a range. Does time mean a range? From "from life", it should mean. Therefore, all positions and times are ranges. Position entropy is area entropy and time entropy is thermodynamic arrow entropy. Secondly, the binary arrangement similar to the binary arrangement of n elements and n bits is similar to the determinant or matrix of n rows and n sequences. One of the differences is that a determinant or matrix has one less quantum bit than a binary arrangement of n elements and n bits. Is this similar to the holographic principle? The binary arrangement of n elements and n bits is an integrable system, and its dynamics can be similar to the determinant of n rows and n sequences with one qubit lower. Mathematically, it may be proved or explored. 1, anti-De Sitter space, that is, point, line and in-plane space, is integrable. Because the junction of point, line and in-plane space with point, line and out-of-plane space tends to be "super zero" or "zero point energy" zero, this is an integrable system, and any dynamics of it can be realized by a low-dimensional field theory. That is to say, due to the symmetry of anti-De Sitter space, the symmetry in the field theory of point, line and in-plane space is greater than the Lorentz symmetry of the origin, line and out-of-plane space. This larger symmetric group is called conformal symmetric group. Of course, this symmetry can be eliminated by changing the geometry inside the anti-De Sitter space, so that the equivalent field theory has no conformal symmetry, which can be called new conformal conformal. If Madsina space is regarded as "out-of-point space", then the general "out-of-point space" or "in-point space" can also be regarded as spherical space. Anti-de sitter space, that is, "space within a point", is a special limit in field theory. The calculation of classical gravity and quantum fluctuation effect in "space within a point" is very complicated and can only be calculated under a limit. For example, the inflation rate of the cosmic mass orbit circle similar to the above anti-De Sitter space is 8.88 times of the speed of light, which is made under a limit. Under this restriction, the "space within the point" transits to a new space-time, or pp wave background. The spectra of cosmic string multiplets can be accurately calculated, and reflected in the dual field theory, we can get the abnormal scale indexes of some operators in the mass spectrum calculation of matter families. 2. The trick is that strings are not composed of a limited number of spherical quantum micro-units. In order to get strings in the usual sense, we must take the limit of loop quantum string theory. Under this limit, the length does not tend to zero, and each string that is coupled into a loop quantum by line rotation can be divided into -33 cm microcells 10, so that the number of microcells does not tend to infinity, so that the physical quantities corresponding to the string itself, such as energy and momentum, are limited. In the operator construction of field theory, we only need to take this limit to get the string state under the background of pp wave. In this way, the microscopic cell model is a universal structure and clear. Under the special background of pp wave, the corresponding field theory description is also an integrable system.