The image sensors use photoelectric conversion functions of the photoelectric device to convert the light image on the photosensitive surface into an electrical signal proportional to the light image. Image sensors are devices that divides the light image on the light surface into many small units and then converts it into usable electrical signals. Image sensors are divided into photo-conductive iconoscope and solid state image sensors. They are mainly used in semiconductor manufacturing technology, digital technology, electronic optical equipment, communication technology.