optical instrument

Noun
  1. An instrument designed to aid vision (synset 103857800)
    is a type of: instrument - a device that requires skill for proper use
    subtypes:
    • binoculars, field glasses, opera glasses - (plural) an optical instrument designed for simultaneous use by both eyes
    • esophagoscope, oesophagoscope - an optical instrument for examining the inside of the esophagus
    • jeweler's glass - an optical instrument used by jewelers; has one or more lenses and is used to view features not readily seen
    • periscope - an optical instrument that provides a view of an otherwise obstructed field
    • projector - an optical instrument that projects an enlarged image onto a screen
    • sights - an optical instrument for aiding the eye in aiming, as on a firearm or surveying instrument
    • eyeglasses, glasses, specs, spectacles - (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision
    • prism spectroscope, spectroscope - an optical instrument for spectrographic analysis
    has: lens, lens system, lense - a transparent optical device used to converge or diverge transmitted light and to form images

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