Automated mastering of holographic waveguide displays

This presentation introduces an automated process for the fabrication of holographic waveguides for smart glasses. Unlike conventional surface relief grating-based waveguides, holographic optical elements (HOEs) offer higher angular and spectral selectivity with reduced eyeglow. The proposed hologram fabrication process employs two robot-mounted recording beams that enable precise positioning and angle adjustment. This allows incoupling, expanding, and outcoupling HOEs to be patterned within the same holographic film layer. This method enhances display optics integration, enables rapid prototyping of various display designs, and provides straightforward compensation for shrinkage effects in waveguide displays.