Glasses-free 3D displays—such as those using lenticular lenses or parallax barriers—rely on precise optical structures to direct different images to each eye. However, these fine patterns can interact with the display’s pixel grid, creating Moiré effects: unwanted wavy or banded distortions that degrade image quality and disrupt the 3D illusion.
Why Moiré Occurs
Moiré appears when two regular patterns (e.g., the lens array and pixel subpixels) overlap at slight mismatches in pitch or angle. This interference produces visible ripples, especially in high-contrast scenes.
Key Challenges
- Viewing-Angle Sensitivity: Moiré may appear or disappear as the viewer moves.
- Resolution Loss: Anti-moiré filtering can blur fine details.
- Manufacturing Tolerances: Even minor misalignments between optical layers and pixels worsen the effect.
Mitigation Strategies
- Pixel Masking: Custom subpixel layouts to reduce pattern clashes.
- Optical Diffusion: Light-scattering layers to soften harsh aliasing.
- Software Correction: Pre-warping content to counteract distortions.
Understanding and minimizing Moiré is critical for delivering clear, comfortable glasses-free 3D experiences.
