13 June 2022. Photonics Online: Depth sensing is becoming a critical enabling technology in various applications, including autonomous robots, virtual and augmented reality, face recognition, and logistics. The technology enables devices and machines to sense their surroundings, change how digital systems understand environments, and automate processes that typically would require human handling or observation. This requires depth measurements and 3D perception.
The depth measuring system typically consists of a transmit side and a receive side. The transmit side illuminates the scene. The receiver camera images the scene, which is used for depth extraction. The RX and TX are typically co-designed for compatibility. Flat optics can play a significant role in several ways.
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