CCD sensors, or Charge-Coupled Devices, are electronic components used in cameras and imaging devices to capture light and convert it into electrical signals. They are known for their high-quality image capture, making them popular in professional photography and scientific applications. These sensors work by transferring charge across the chip, allowing for precise control of the image data. CCD sensors are often compared to CMOS sensors, another type of imaging technology, but they typically offer better light sensitivity and lower noise levels, which can result in clearer images in low-light conditions.