Fig. 10
From: Waveguide-based augmented reality displays: perspectives and challenges
(a–d Are redrawn from [105])
Phase distortion in SRGs-based waveguide combiner. a Side view of a waveguide with two gratings \({G}_{1}\) and \({G}_{2}.\) b Phase mismatch among grating \({G}_{1}\), \({G}_{2}\) and waveguide. c Side view of a waveguide with two phase matched gratings \({G}_{1}\) and \({G}_{2}\). d Phase match among gratings \({G}_{1}\), \({G}_{2}\) and waveguide