Design and Simulation of Compact AR/VR Optics: Integrating Metalens Array with RGB Filters

초록

The growing demand for immersive Augmented Reality (AR) and Virtual Reality (VR) experiences necessitates the development of compact, efficient, and high-performance optical systems. However, existing optical architectures often suffer from critical limitations such as low-image resolution up to 50,000 DPI, significant chromatic aberration ranging 20–30 µm, narrow field of view, and bulky form factors, posing substantial bottlenecks to further miniaturization and performance enhancement. To address these challenges, we propose a compact optical system that integrates an all-dielectric metalens array with metasurface-based RGB filters to enhance AR/VR near-eye displays (NEDs). The color filter (CF) uses subwavelength hydrogenated amorphous silicon (a-Si:H) nanorods, achieving precise RGB filtering with relative distances of 0.0261 (Red), 0.0217 (Green), and 0.0199 (Blue) from pure colors. A high spatial resolution of 100,000 DPI is demonstrated. The metalens array, composed of titanium dioxide (TiO<inf>2</inf>) nanobars, focuses filtered light at a focal length of 7.2 µm, with device dimensions of 30 µm (length) × 30 µm (width) × 2.775 µm (height). Simulation results validate improved image resolution, color accuracy, and brightness, demonstrating potential for real-world AR/VR applications. This work contributes to compact, high-performance optical systems by addressing current AR/VR optics limitations. © The Author(s), under exclusive licence to The Materials Research Society 2025.

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