lens applications

• the camera

  takes light from large, distant objects and forms smaller real images on film or a CCD (charged coupled device) sensor
• movie projector


  takes a small, inverted object and projects a larger, upright, real image on the screen
• magnifying glass


  if the object is between F' and the lens, a larger, virtual image is produced
• compound microscope


  the microscope is an arrangement of two converging lenses. the lens creates a larger, inverted, real image, but we only see a larger, virtual image
• refracting telescope


  same principle as the microscope, but the object is farther away