sentence: Prisms are used in binoculars to bend the light.
sentences_after: This lets the tubes of the binoculars be short. Sometimes prisms are used to reflect light instead of bending it. Some cameras use a prism to send light to the viewfinder, so the photographer can see what will be photographed.
concept_name: prism
headings: Prism (optics) Uses
categories: Optics