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Fig. 4 | eLight

Fig. 4

From: Planar liquid crystal polarization optics for augmented reality and virtual reality: from fundamentals to applications

Fig. 4

Plots of LC optical elements formed by PAPH. a Local azo-dye compounds aligning perpendicular to the sinusoidal linear polarization pattern by interfering an LCP beam with an RCP beam. b Planar nematic structure with bulk LC director following bottom planar pattern. c Planar twisting structure with an additional twist in z direction. d Tilted helical structure with perfect helical structure tilted to match the bottom patterned k-vector. e Qualitative diagram of free energy distributions of the planar twisting and tilted helical structures

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