A nanostructured metasurface lens enables glasses-free 3D viewing and can switch to high-resolution 2D operation, expanding how displays render depth without headgear.

Voltage control toggles the lens between 2D mode (concave, sharp flat image) and 3D mode (convex, depth perception) based on light polarization, enabling glasses-free 3D.

The technology is described as switchable 2D–3D display capability built on metasurface and lenticular lens concepts, allowing seamless transition between two-dimensional and three-dimensional viewing modes.

The work is framed within ongoing research on metalenses and related 3D display technologies, citing prior studies and related findings.

Potential applications include tablets, augmented reality devices, medical imaging, smartphones, and televisions.

No competing interests are declared by the authors of the News & Views piece.

Tests were conducted on large-area metalenses (about 50 by 50 millimeters) integrated with OLED panels, a common platform for modern displays.

Foundational works cited span 2004–2024, covering traditional lenticular approaches and modern metasurface strategies for wide viewing angles, multiple focal distances, and high-resolution 3D rendering.

References cover autostereoscopic designs, focal surfaces, multi-view and parallax-barrier concepts, and recent advances in metalenses and dielectric metasurfaces relevant to 2D/3D switchability and full-color volumetric displays.

The citation list includes a broad spectrum of prior work on autostereoscopic displays, 2D/3D switchable displays, multi-plane and light-field concepts, and metasurface-based elements enabling switchable depth perception.

There is no product launch announced yet, but the technology marks a major advance in glasses-free 3D display capabilities.

The work is contextualized by Moon et al.’s 2026 Nature paper showing wide-angle 3D with the metasurface and high-resolution 2D on demand.