The　optical　waveguide　shows　advantages　in　terms　of　exit　pupil　and　appearance　shape,　and　is　the　mainstream　method　of　AR　combiner　in　the　future.　The　method　of　exit　pupil　expansion　is　to　diffract　and　derive　the　waveguide　along　the　propagation　direction　for　many　times,　so　that　the　brightness　of　the　exit　pupil　gradually　darkens　in　space　along　the　direction　of　light　propagation,　resulting　in　the　unevenness　of　the　exit　pupil.　Especially,　polarization　volume　grating　(PVG)　is　used　as　a　coupler,　PVG　only　responds　to　one　of　the　circularly　polarized　light,　and　the　orthogonal　circularly　polarized　light　will　be　directly　transmitted.　Therefore,　a　waveguide　AR　engine　based　on　PVG　is　proposed　here,　and　the　left-handed　circularly　polarized　light　and　right-handed　circularly　polarized　light　are　used　to　expand　the　range　of　the　eyebox　without　reducing　its　brightness　uniformity.　The　experimental　test　results　show　that　the　range　of　the　eye　box　is　doubled　while　maintaining　66.6%　global　uniformity　at　a　horizontal　field　of　view　of　32.8°.　©　2024　John　Wiley　and　Sons　Inc.　All　rights　reserved.