Design optimization of polarization volume gratings for full‐color waveguide‐based augmented reality displays
Yuqiang Ding, Yannanqi Li, Qian Yang, Shin‐Tson Wu
Abstract
Abstract Reflective polarization volume gratings (PVGs) can be used as input and output couplers in a diffractive waveguide‐based augmented reality (AR). To improve the stability and wearing comfort, a thin and lightweight full‐color waveguide display is needed. In this paper, we propose a single full‐color waveguide AR display based on PVGs. By analyzing the optical system, we derived the field of view limit by optimizing a three‐layer PVG as an in‐coupler. Pairing with a single‐layer, thin PVG as an out‐coupler, we can achieve a relatively uniform exit pupil of 8 mm at horizontal pupil expansion direction.
Topics & Concepts
WaveguideOpticsPolarization (electrochemistry)Augmented realityComputer scienceMaterials scienceOptoelectronicsPhysicsArtificial intelligencePhysical chemistryChemistryAdvanced Optical Imaging TechnologiesOptical Wireless Communication TechnologiesOptical Coatings and Gratings