There are usually two to three mirrors in a scanner and they are slightly curved so to reflect the image onto a smaller surface.
Americium is not used in bar code scanners.
To view physical appearance by own-self.answer #2grocery store scanners use mirrors to direct the lasers, many other laser applications use mirrors to move and direct the beams. Many industrial processes use mirrors and lasers to direct light and laser beams. You use mirrors to drive safely. Warehouses use mirrors on the corners to prevent collisions. Many camera have mirrors in them. We use mirrors for many different applications.
Lutetium is used in PET scanners
If you are looking for a brand-new scanner, uniden.com has scanners listed for sale. If you are looking for a used scanner, sites such as ebay.com and amazon.com may have used scanners listed for sale.
Laser scanners are used in: 3d printers, laser printers, for treatment of long-sighted eyes, laser shows, in microscopes, laser tv, LIDAR which is a technology that can determine the distance of objects. It is also used in barcode scanners.
Dell scanners are used for scanning documents. They are great for both home and office use. They are also used for copying documents, articles and pictures.
parallel port
Mercury WAS used for mirrors- it provided a bright reflection that did not tarnish.
Convex mirrors
Concave mirrors
Concave mirrors are used in telescopes. Convex mirrors are used as side-view mirrors in cars.
Dentists use a variety of equipment, including x-ray machines, drills, mouth mirrors, probes, forceps, brushes, and scalpels. Lasers, digital scanners, and other computer technologies also may be used.