optical device vs lens

lens vs optical device

optical device and lens both are nouns.

Word	Noun	Adjective	Verb	Adverb
optical device	Yes	No	No	No
lens	Yes	No	No	No

As nouns, lens is a hyponym of optical device; that is, lens is a word with a more specific, narrower meaning than optical device:

optical device: a device for producing or controlling light
lens: a transparent optical device used to converge or diverge transmitted light and to form images

Other hyponyms of optical device include autofocus, biprism, camera lucida, coelostat, collimator, diffraction grating, grating, diffuser, diffusor, finder, view finder, viewfinder, Kerr cell, laser, optical maser, lens system, lense, Nicol prism, planetarium, polarimeter, polariscope, optical prism, prism, projector, Rochon prism, Wollaston prism, stereoscope, viewer.

optical device (noun)	lens (noun)
a device for producing or controlling light	a transparent optical device used to converge or diverge transmitted light and to form images
	electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
	biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina
	(metaphor) a channel through which something can be seen or understood

Difference between optical device and lens

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