Lens meaning

lĕnz
The definition of a lens is a piece of glass or other hard clear material molded with one side flat and the other curved or both sides curved that forms an image by bringing together or spreading the light that passes through it.

An example of lens is the clear pieces covering the eyes in eye glasses.

An example of lens is what a camera uses to take photos.

noun
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A thin piece of glass or plastic, as on a pair of sunglasses, that transmits light without refraction.
noun
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A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which are curved, by means of which light rays are refracted so that they converge or diverge to form an image.
noun
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A combination of two or more such pieces, sometimes with other optical devices such as prisms, used to form an image for viewing or photographing.
noun
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A device or phenomenon (such as a gravitational field) that causes light or other radiation to converge or diverge by an action analogous to that of a lens.
noun
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A transparent structure behind the iris of the eye that focuses light entering the eye on the retina.
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To make a photograph or movie of.
verb
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To bend or distort (light, for example) by means of a lens, especially a gravitational field.
verb
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Any of various devices used to focus microwaves, electrons, or sound waves.
noun
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A transparent, biconvex body situated between the iris and the vitreous humor of the eye: it focuses upon the retina light rays entering the pupil.
noun
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To photograph.
verb
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To make a film of.
verb
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A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which are curved, by means of which light rays are refracted so that they converge or diverge to form an image.
noun
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A combination of two or more such pieces, sometimes with other optical devices such as prisms, used to form an image for viewing or photographing.
noun
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A thin piece of glass or plastic, as on a pair of sunglasses, that transmits light without refraction.
noun
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A device that causes radiation to converge or diverge by an action analogous to that of an optical lens. The system of electric fields used to focus electron beams in electron microscopes is an example of a lens.
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The glass or plastic elements that focus light onto analog film or a digital sensor in a still or video camera. Lens quality is just as important in digital cameras as it was in Daguerreotype imaging of the mid-1800s (see image). See digital camera and kit lens.
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A taxonomic genus within the family Fabaceae — the lentils.
pronoun
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Origin of lens

  • New Latin lēns from Latin lentil (from the shape of a double convex lens)
    From American Heritage Dictionary of the English Language, 5th Edition
  • Latin lens (“a lentil bean”)
    From Wiktionary

Lens Sentence Examples

  • Its object is a practical one, to determine by scientific considerations the shape of lens best adapted to improve the capabilities of the telescope, which had been invented not long before.

  • If not, the substitution of an achromatic lens will be of no advantage.

  • The lateral eyes are in Limulus " compound eyes," that is to say, consist of many lenses placed close together; beneath each lens is a complex of protoplasmic cells, in which the optic nerve terminates.

  • (From Lankester, loc. cit.) forming a star-like chitinous centre in section, each lateral eye of Scorpio has several rhabdoms of five or less rhabdomeres, indicating that the Limulus lateral eye-unit is more specialized than the detached lateral eyelet of Scorpio, so as to present a coincidence of one lens with one rhabdom.

  • The curved surfaces take the place of fl e the lens in fig.

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Also Mentioned In

Words near lens in the Dictionary