- Types:
- show 22 types...
- hide 22 types...
-
binoculars, field glasses, opera glasses
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
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
-
bifocals
eyeglasses having two focal lengths, one for near vision and the other for far vision
-
bombsight
a sighting device in an aircraft for aiming bombs
-
epidiascope
an optical projector that gives images of both transparent and opaque objects
-
front projector
a projector for digital input
-
goggles
tight-fitting spectacles worn to protect the eyes
-
gun-sight, gunsight
a sight used for aiming a gun
-
lorgnette
eyeglasses that are held to the eyes with a long handle
-
mass spectrometer, spectrometer
spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
-
cine projector, film projector, movie projector
projects successive frames from a reel of film to create moving pictures
-
overhead projector
a projector operated by a speaker; projects the image over the speaker's head
-
pince-nez
spectacles clipped to the nose by a spring
-
slide projector
projector that projects an enlarged image of a slide onto a screen
-
spectrograph
a spectroscope by which spectra can be photographed
-
dark glasses, shades, sunglasses
spectacles that are darkened or polarized to protect the eyes from the glare of the sun
