Using waveguide to propagate images from micro displays to human eyes can effectively reduce the size and weight of AR equipment. For the optical design, we need grating structures to couple rays into or out of waveguide with sufficient uniformity while remaining the most efficienct. Additionally, enlarging the FOV (Field of View) and taking chromatically into account are important for offering an immersive experience for AR users. From the CAE tools perspective, the critical challenge is to consider the requirements all together. Hence, the key for waveguided AR design is a feasible design flow and comprehensive simulation tools to address the design challenges. We successfully integrated wave optics phenomenon into geometrical optics results to complete a waveguide AR glasses optimizing design by using Synopsys RSoft RCWA tool DiffractMOD, LightTools and parametric BSDF interface.
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