3D sensors are not a specific brand but a category of advanced sensing devices used in various industries. These sensors are developed by multiple companies worldwide, including leading manufacturers like Keyence (Japan), Cognex (USA), and SICK AG (Germany). They serve industries such as automation, robotics, automotive, and healthcare by enabling precise 3D scanning, object recognition, and spatial measurement. Key products include time-of-flight (ToF) sensors, structured light sensors, and stereo vision systems, which are integral for quality control, navigation, and augmented reality applications. Companies like Intel (USA) also provide 3D sensing solutions for consumer electronics, such as facial recognition in smartphones.