English > optical instrument: 1 sense > noun 1, artifact| Meaning | An instrument designed to aid vision. |
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| Parts | lens, lense, lens system | A transparent optical device used to converge or diverge transmitted light and to form images |
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| Narrower | binoculars, field glasses, opera glasses | An optical instrument designed for simultaneous use by both eyes |
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| esophagoscope, oesophagoscope | An optical instrument for examining the inside of the esophagus |
| jeweler's glass | An optical instrument used by jewelers |
| 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 |
| spectacles, specs, eyeglasses, glasses | optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision |
| spectroscope, prism spectroscope | An optical instrument for spectrographic analysis |
| Broader | instrument | A device that requires skill for proper use |
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| Spanish | instrumento óptico |
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| Catalan | instrument òptic |
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