The color mark sensor is better. Optical fiber sensors can also distinguish colors, but they can only do simple color distinction. Colors with similar colors need to be processed with a very high-precision optical fiber amplifier, and the results may not be ideal; color mark sensors refer to the detection of various labels, even if the background color has a slight color difference, it can be detected, and the processing speed is fast; so color mark sensors are more accurate than optical fiber sensors in this regard.
