Light detectors, also known as SENSORS, are devices that detect and measure light. They are used in a variety of applications, such as security systems, cameras, and medical imaging. Light detectors can be used to detect changes in light intensity, color, and direction. They can also be used to measure the amount of light in a given area. Light detectors are an important part of many modern technologies, providing data that can be used to improve safety, efficiency, and accuracy.