A silicon chip that enables the creation of 4D cameras

The development of an affordable, low-power and scalable sensor to map the position and velocity of 3D objects in a dynamically evolving scene has so far proved difficult. An imaging system formed using integrated silicon photonic circuits has now been developed as an equivalent to a camera, but for 4D imaging. The energy-efficient, high-resolution sensor consists of 352 × 176 pixels on a focal plane array.