Near-eye displays are emerging as the future of portable devices, providing individuals with immersive virtual reality experiences. The primary objectives in developing these displays are to create immersive experiences and ensure visual comfort. While a larger field of view (FOV) enhances immersion in virtual reality, addressing the Vergence-Accommodation-Conflict (VAC) is crucial for comfortable vision. Researchers have explored innovative approaches to tackle these challenges. A significant breakthrough in near-eye displays is the integration of light field technology. However, earlier light field displays in VR were limited by their small size and low resolution, resulting in constrained viewing angles and screen window effects.
Recently successfully overcame these limitations by utilizing a 3.1-inch 3k3k LC display. Nevertheless, the transition to high-resolution VR LCD displays presented material and process challenges that demanded attention. Their research highlights the importance of employing high-resolution liquid crystal displays (LCDs) to address light field resolution issues. Researchers propose strategies to enhance LCD resolution, including aperture and contrast ratios through specialized pixel designs and driving techniques. Additionally, they explore novel applications of light field technology beyond its use in VR displays, namely, in vision correction for VR systems. Finally, they address visual correction within the realm of light field VR by introducing a ray tracing-based graphical process called ‘corrected eye box mapping’.
More information:
https://spie.org/news/expanding-the-vr-immersion-comfort-zone?SSO=1