High-efficiency switchable optical elements for advanced head-up displays

摘要

The Pancharatnam-Berry optical elements (PBOEs) are utilized to enhance the performance of head-up displays (HUDs). The Pancharatnam-Berry lenses (PBLs) provide varifocal functionality and compensate chromatic aberrations, while the Pancharatnam-Berry deflectors (PBDs) can function as optical combiners and waveguide couplers. Moreover, the Rigorous coupled wave analysis (RCWA) based on the scattering matrix is developed and applied in the structure optimization of PBOEs for HUD applications.