Illumination units for vision sensors are specialized lighting solutions designed to enhance the performance of machine vision systems in industrial automation. These units are produced by various companies worldwide, including prominent manufacturers like Advanced Illumination (USA), CCS Inc. (Japan), and Smart Vision Lights (USA). They serve industries such as automotive, electronics, pharmaceuticals, and food processing by providing consistent, high-quality lighting for accurate image capture. Key products include LED ring lights, bar lights, dome lights, and coaxial illuminators, which are critical for tasks like inspection, measurement, and barcode reading. These units are often integrated with vision sensors from brands like Cognex, Keyence, and Basler.