Volumetric displays create true 3D imagery by emitting, reflecting, or projecting light within a physical volume, allowing viewers to see objects from multiple angles without glasses. Unlike flat-panel autostereoscopic displays, these systems render points in 3D space using:
- Swept-Volume Displays: Rapidly rotating or moving screens (e.g., LED fans, spinning mirrors).
- Static-Volume Displays: Laser-induced plasma (e.g., Leia’s 3D Lightfield) or layered LCDs.
- Holographic Volumetric: Combines light-field projection with true depth (still experimental).
Challenges: Limited resolution, transparency (no occlusion), and high cost—but used in medical imaging, aerospace, and digital art.
