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Under-Display Cameras: The Future of Smartphone Notches?
4 May
Summary
- New optical metasurfaces technology can drastically reduce camera cutout sizes.
- Metalenz's tech uses nanostructures to bend light, replacing multiple lens elements.
- Polar ID facial authentication uses polarization data for enhanced security.
The familiar smartphone notch, once a staple of devices like the iPhone X, is largely giving way to more discreet punch-hole cameras. Apple's Dynamic Island on the iPhone 14, housing its Face ID system, represents a significant current cutout. However, a breakthrough from Boston-based optics startup Metalenz, showcased at Display Week 2026, promises to shrink these intrusions significantly.
Metalenz's innovative optical metasurfaces employ a single, flat-lens system embedded with nanostructures. This technology replaces the multiple lens elements traditionally used to refract light, thereby improving image clarity and reducing space requirements. Over 300 million of these metasurfaces are already integrated into consumer devices, primarily for time-of-flight sensors aiding autofocus and depth perception.
Further advancements include Metalenz's ability to capture polarization data. This capability enables applications like Polar ID, a facial authentication platform designed to rival Apple's Face ID. By analyzing the unique polarization signatures of light interacting with skin, Polar ID can securely differentiate genuine faces from even highly accurate 3D masks, surpassing the security of existing facial recognition systems.
