Contrast / Color / Luminescence
Color sensors are used for colored object detection, quality control and print accuracy applications. Contrast print mark sensors determine contrast by sensing reflected light (either white or RGB) to detect the difference in the wavelength of the reflected light between the mark and background. Contrast sensors offer detection ranges up to 40mm, with quick-disconnect termination. Luminescence sensors detect visible and non-visible marks that illuminate when using ultraviolet (UV) light. Fluorescent material and marks are reliably detected independently of their pattern, colors or surface conditions on any material. Luminescence sensors emit UV light with a wave length of approximately 375 nm. Fluorescent substances convert the UV light into long-wave visible light, which is then received and evaluated by the luminescence sensor.
