1.What is front-projected holographi
        c display?
        Front-projected holographic display, also known as virtual 
      imaging technology, is a recording and reproducing tech
      nology that records and reproduces the real three-dimen
      sional images of objects using interference and diffractio
      n principles.
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             How to Realize Holographic Projection 
             Technology?
         •                As can be seen above, holographic projection 
                     imaging is mainly realized by using holographic 
                     projection film, which is an imaging medium with 
                     high lumen projector and optical technology. 
                     Holographic projection film is a new projection 
                     material. It uses a unique transparent projection 
                     material to achieve high-definition image. The 
                     final image effect is realistic, and it can see the 
                     half-space image of virtual picture. The principle 
                     of realizing holographic projection is as follows: 
                     The following two steps: 
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                       What we need?
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       1.First
      It is a shooting process: before projection, the projected image needs to be 
    recorded, that is, the light information of the object is recorded by using the 
    interference principle to form a diffuse object beam, which converts the phase 
    and amplitude of the object light wave into the intensity of space change. All 
    the light waves of the object are recorded by using the contrast and interval of 
    interference fringes. After a series of processing, the hologram is formed.
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       Second
      Secondly, it is an imaging process: after taking the hologram, it is necessary to 
    image. That is to say, using the principle of diffraction to reproduce the light wave 
    information just recorded. Under the irradiation of coherent laser, the diffracted light 
    wave of a linear recording sinusoidal hologram can generally give two images. The 
    reconstructed image has a strong stereoscopic sense and a very real visual sense.
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