Brightness uniformity refers to the consistency of luminance across the screen. In autostereoscopic displays (which create 3D effects without glasses), non-uniform brightness can arise due to:
- Optical Layer Effects – Lenticular lenses or parallax barriers may cause vignetting (darker edges) or angular-dependent light distribution.
- Backlight Inconsistency – Uneven backlight illumination, especially in edge-lit LCDs, can create hotspots or dim zones.
- View-Dependent Variations – Brightness may shift as the viewer moves, since different perspectives are directed at different angles.
Poor uniformity disrupts immersion and causes visual fatigue. Solutions include advanced backlight designs (e.g., local dimming), diffuser optimization, and calibration for multi-view rendering.
