“Optical clone” represents an advanced conceptualization of traditional holography, transcending the dichotomy between reality and virtuality by replicating authentic three‐dimensional optical images for display purposes. Holographic true threedimensional display technology is thus acknowledged globally as a pinnacle future display modality. The systems demonstrated in this paper are flat‐panel "optical clone" holographic true threedimensional display and the space floating holographic threedimensional display system, which surmounted the significant challenge of substituting dual‐beam coupling with single‐beam direct writing in hologram inscription systems, paving the way for compatibility with existing two‐dimensional display technologies.