optical device

Thesaurus

Noun

1.

optical device - a device for producing or controlling light autofocus - an optical device for focussing a camera or other instrument automatically biprism - an optical device for obtaining interference fringes camera lucida - an optical device consisting of an attachment that enables an observer to view simultaneously the image and a drawing surface for sketching it coelostat - optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror collimator - optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam device - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water" diffraction grating, grating - optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum diffuser, diffusor - optical device that distributes the light of a lamp evenly view finder, viewfinder, finder - optical device that helps a user to find the target of interest Kerr cell - optical device consisting of a transparent cell with two electrodes between two polarizing media; passes light only if the two planes of polarization are parallel; used as a high-speed shutter or to modulate a laser beam laser, optical maser - an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light lens, lens system, lense - a transparent optical device used to converge or diverge transmitted light and to form images Nicol prism - optical device that produces plane-polarized light planetarium - an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome polarimeter, polariscope - an optical device used to measure the rotation of the plane of vibration of polarized light optical prism, prism - optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image projector - an optical device for projecting a beam of light Rochon prism, Wollaston prism - optical device that produces plane-polarized ultraviolet light stereoscope - an optical device for viewing stereoscopic photographs viewer - an optical device for viewing photographic transparencies