Optical scanners are devices that convert physical documents and images into digital formats. They work by using light sensors to capture the details of a document, which are then processed and stored on a computer. Common types of optical scanners include flatbed scanners, sheet-fed scanners, and handheld scanners, each designed for different scanning needs. These devices are widely used in various fields, such as business, education, and healthcare, to digitize paperwork for easier storage and sharing. Optical scanners can also be found in photocopiers and multi-function printers, enhancing their functionality by allowing users to create digital copies of documents quickly.