Design of an augmented reality display based on polarization grating
Xia Renjie, Wang Changshun †, Pan Yujia, Chen Tianyu, Lyu Ziyao, Sun Lili
       

The experimental optical paths of (a) recording the grating and (b) detecting the diffraction light of the grating. BS is a spectroscopic prism; M1, M2, and M3 are reflective mirrors; QWP is a quarter-wave plate; HWP is a half-wave plate; and ALCP is the azo liquid crystal polymer film.