lens

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lens
Light rays converge when passing through a biconvex lens (top) and diverge when passing through a biconcave lens (bottom).f indicates the focus.

lens

 (lĕnz)
n. pl. lens·es
1. 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.
2. 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. Also called compound lens.
3. A thin piece of glass or plastic, as on a pair of sunglasses, that transmits light without refraction.
4. 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.
5.
a. A transparent, biconvex structure in the eye of a vertebrate or cephalopod that is located between the iris and the vitreous humor and focuses light rays entering through the pupil to form an image on the retina.
b. A similar structure in many invertebrates.
tr.v. lensed, lens·ing, lens·es
1. Informal To make a photograph or movie of.
2. To bend or distort (light, for example) by means of a lens, especially a gravitational field.

[New Latin lēns, from Latin, lentil (from the shape of a double convex lens).]

lensed adj.

lens

(lɛnz)
n
1. (General Physics) a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images
2. (General Physics) Also called: compound lens a combination of such lenses for forming images or concentrating a beam of light
3. (General Physics) a device that diverges or converges a beam of electromagnetic radiation, sound, or particles. See electron lens
4. (Anatomy) anatomy See crystalline lens
[C17: from Latin lēns lentil, referring to the similarity of a lens to the shape of a lentil]

Lens

(lenz; French lɑ̃s)
n
(Placename) an industrial town in N France, in the Pas de Calais department; badly damaged in both World Wars. Pop: 36 257 (2006)

lens

(lɛnz)

n., pl. lens•es.
1. a piece of transparent substance, usu. glass, having two opposite surfaces either both curved or one curved and one plane, used in optical devices for changing the convergence of light rays, as for magnification, or in correcting defects of vision.
2. a combination of such pieces.
3. some analogous device, as for affecting sound waves, electromagnetic radiation, or streams of electrons.
4. a doubly convex, transparent body in the eye, behind the pupil, that focuses incident light on the retina.
5. a body of rock or ore that is thick in the middle and thinner toward the edges, similar in shape to a biconvex lens.
[1685–95; < New Latin; Latin lēns a lentil (a lens so called from its shape); compare lentil]

lens

(lĕnz)
1. A transparent structure behind the iris of the eye that focuses light entering the eye on the retina.
2.
a. A piece of glass or plastic shaped so as to focus or spread parallel light rays that pass through it to form an image.
b. A combination of two or more such lenses used to form an image, as in a camera or telescope. Also called compound lens.

lens

- From Latin for "lentil," because of the similarity in shape.
See also related terms for similarity.

lens


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1. A device causing light rays or subatomic particles to converge or diverge as they pass through it.
2. A biconvex transparent structure behind the iris. It bends light rays entering the eye and so helps to focus them on the retina.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lens - a transparent optical device used to converge or diverge transmitted light and to form imageslens - a transparent optical device used to converge or diverge transmitted light and to form images
anastigmat - compound lens or lens system designed to be free of astigmatism and able to form approximately point images
anastigmatic lens - a lens designed to correct astigmatism
camera lens, optical lens - a lens that focuses the image in a camera
compound lens - a lens system consisting of two or more lenses on the same axis
optical condenser, condenser - lens used to concentrate light on an object
contact lens, contact - a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
converging lens, convex lens - lens such that a beam of light passing through it is brought to a point or focus
crown lens - a lens made of optical crown glass
concave lens, diverging lens - a lens such that a parallel beam of light passing through it is caused to diverge or spread out
eyepiece, ocular - combination of lenses at the viewing end of optical instruments
field lens - the lens that is farthest from the eye in an optical device with more than one lens
Fresnel lens - lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length
intraocular lens - an artificial lens that is implanted into the eye of someone to replace a damaged natural lens or someone who has had a cataract removed
meniscus - (optics) a lens that is concave on one side and convex on the other
eyeglass, monocle - lens for correcting defective vision in one eye; held in place by facial muscles
object glass, object lens, objective lens, objective - the lens or system of lenses in a telescope or microscope that is nearest the object being viewed
optical device - a device for producing or controlling light
optical instrument - an instrument designed to aid vision
2.Lens - genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils
rosid dicot genus - a genus of dicotyledonous plants
Papilionoideae, subfamily Papilionoideae - alternative name used in some classification systems for the family Papilionaceae
3.lens - (metaphor) a channel through which something can be seen or understood; "the writer is the lens through which history can be seen"
communication channel, channel, line - (often plural) a means of communication or access; "it must go through official channels"; "lines of communication were set up between the two firms"
figure of speech, trope, image, figure - language used in a figurative or nonliteral sense
4.lens - biconvex transparent body situated behind the iris in the eyelens - biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function
eye, oculus, optic - the organ of sight
lens cortex, cortex - the tissue that surrounds the lens nucleus
lens capsule - a tenuous mesoblastic membrane surrounding the lens of the eye
5.lens - electronic equipment that uses a magnetic or electric field in order to focus a beam of electronslens - electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
electronic equipment - equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)

lens

noun
Related words
adjective lenticular
Translations
عَدَسَةٌعَدَسَة العَيْنعَدَسَه
čočkasklo
linseobjektivglas
linssimykiöpoikkeutuskela
leća
lencse
augasteinnlinsa
レンズ
렌즈
lęšislęšiukas
lēcaobjektīvs
šošovka
leča
lins
เลนส์ตา
ống kính

lens

[lenz]
A. N [of spectacles] → lente m or f; [of camera] → objetivo m; (= handlens) (for stamps etc) → lupa f (Anat) → cristalino m
contact lenslente m or f de contacto, lentilla f
B. CPD lens cap Ntapa f de objetivo
lens hood Nparasol m de objetivo

lens

[ˈlɛnz] n [magnifying glass, telescope] → lentille f; [spectacles] → verre m; [camera] → objectif m (also contact lens) → lentille flens cap nbouchon m d'objectiflens hood n [camera] → pare-soleil m inv

lens

n (Anat, Opt, Phot) → Linse f; (in spectacles) → Glas nt; (= camera part containing lens)Objektiv nt; (= eyeglass)Klemmlupe f; (for stamps etc) → Vergrößerungsglas nt, → Lupe f

lens

:
lens cap
nSchutzkappe f
lens hood
nSonnenblende f, → Gegenlichtblende f

lens

[lɛnz] n (Anat) (of the eye) → cristallino; (of spectacles) → lente f; (of camera) → obiettivo

lens

(lenz) noun
1. a piece of glass etc curved on one or both sides and used in spectacles, microscopes, cameras etc. I need new lenses in my spectacles; The camera lens is dirty.
2. a similar part of the eye. The disease has affected the lens of his left eye.

lens is singular; the plural is lenses.

lens

عَدَسَةٌ čočka linse Linse φακός lente linssi lentille leća lente レンズ 렌즈 lens linse soczewka lente линза lins เลนส์ตา lens ống kính 镜头

lens

1. n. lente;
achromatic ______ acromático;
adherent ______ adherido;
biconcave ______ bicóncavo;
biconvex ______ biconvexo;
bifocal ______ bifocal;
contact ______ de contacto, lentillas;
dislocation of ___dislocación del ___;
___ implantation, intraocular___ -s intraoculares;
trifocal ______ -s trifocales
2. cristalino, lente transparente del ojo.

lens

n lente m&f; (of the eye) cristalino; bifocal — lente bifocal; (hard, soft) contact — lente de contacto (rígido, blando); progressive — lente progresivo; trifocal — lente trifocal
References in periodicals archive ?
The Aplanatic lens maintains a very small focused spot, providing for higher energies at the focal point than can be achieved with singlet lenses.