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Definitions of optical instrument
Definition that contains optical instrument
  • field the area that is visible (as through an optical instrument)
  • glasses (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision
  • sights an optical instrument for aiding the eye in aiming, as on a firearm or surveying instrument
  • binoculars (plural) an optical instrument designed for simultaneous use by both eyes
  • specs (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision
  • projector an optical instrument that projects an enlarged image onto a screen
  • spectacles (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision
  • periscope an optical instrument that provides a view of an otherwise obstructed field
  • eyeglasses (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision
  • ocular combination of lenses at the viewing end of optical instruments
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