ETH Zurich researchers unveil pixel that both emits and analyzes light

Researchers at ETH Zurich announced a new type of pixel that merges light emission and analysis. The device combines a light source and a detector within a single microscopic element. By integrating both functions, the pixel can reduce the number of components needed in optical systems. The team demonstrated the concept using laboratory prototypes. This approach could enable more compact cameras and sensing devices. Potential applications include mobile imaging, medical diagnostics, and autonomous vehicles. The researchers plan to improve efficiency and explore large‑scale manufacturing. The work highlights a trend toward multifunctional photonic components.