Design of holographic display system based on light field reconstruction

Aiming at the pain points of traditional pseudo-holographic projection such as narrow viewing angle, poor depth of field, and weak interaction, this paper systematically studies the key technologies of real holographic display, and proposes a light field reconstruction-driven holographic display solution for virtual shrine applications. First, the light field parameterization and wavefront control theory are sorted out, and the advantages and limitations of three cutting-edge technologies: high-speed SLM, femtosecond plasma, and acoustic buoyancy are analyzed. Then, a four-level architecture of "laser light source-wavefront phase engine-controllable scattering medium-GPU control" is designed, and 240 Hz real-time wavefront reconstruction is achieved through the sliced CGH + CITL adaptive algorithm. The simulation results based on the HCI-2024 data set show that the system MSE is as low as 0.0013, and the average PSNR is 37.6 dB; the brightness uniformity of the human eye viewing area is <10%, and MTF50>44 lp mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−1</sup>. Cost forecasts show that material costs can be reduced by 46% within five years, meeting the threshold for small-batch landing. Quantitative comparison with Pepper's Ghost shows that the proposed solution is significantly superior to traditional technology in terms of structural volume, field of view and depth realism. The study proves that this technical path is feasible and worth promoting.