This sensor uses an optical method to determine the color of an object by analyzing the absorption, reflection or transmission characteristics of light of a specific wavelength. lt emits a specific range of light to the object being measured, then receives the reflected or transmitted light, and converts the optical signal into an electrical signal for processing. Objects of different colors have different absorption, reflection and transmission characteristics for light of different wavelengths, so the color parameters of the obiect, such as hue, saturation and brightness, can be determined based on the characteristics of the received optical signal.

Application fields: Widely used in industrial wastewater treatment, environmental monitoring, food processing, scientific research, and medical fields.