Lens
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220769715
2008-06-21T14:13:43Z
Tresckow
288007
{{wiktionarypar|lens}}
'''Lens''' can refer to:
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==In optics==
*[[Lens (optics)]], an optical element with perfect or approximate axial symmetry which transmits and refracts light
**[[Lens (anatomy)]], a part of the eye
**[[Corrective lens]] for correction of human vision
**[[Photographic lens]], a lens designed for use on a camera. See also [[:Category:Photographic lenses]]
**[[Sunglasses#Lens|Sunglass lenses]], which are light-attenuating elements
{{Seealso|Category:Lenses}}
==Focussing of other radiation and forces==
*[[Gravitational lens]], a massive astronomical object which bends the light from objects beyond it
*[[Electrostatic lens]], a device used to focus or collimate electron beams
*[[Explosive lens]], a shaped explosive charge with focussed blast used primarily in nuclear weapons
*[[Acoustic lens]], a mechanical device used in loudspeaker design to improve the dispersion of high frequencies
*[[Microwave lens]], used to focus microwave radiation and often employed in [[slotted waveguide]] antennas
==Uses associated with shapes==
''The word ''lens'' originally comes from the Latin for a [[lentil]]; the first, biconvex, optical lens was given its name because it was lentil-shaped.''
*[[Lens (genus)]], the genus of the lentil plant
*[[Lens (geometry)]], a geometric shape formed from two arcs
*[[Lens (geology)]], a body of ore or rock that is thick in the middle and thin at the edges
*[[Lens (groundwater)]], a layer of fresh water derived from rainfall, overlying saline groundwater
==Other uses==
* a metaphor for a [[Perspective (cognitive)|point of view]]
*a fictional alien device in E. E. Smith's [[Lensman]] series, which gives its bearer telepathic and other abilities
==Place names==
*[[Arrondissement of Lens]], in the ''département'' of Pas-de-Calais, France
**[[Lens, Pas-de-Calais]], a ''commune'' in that arrondissement
***[[RC Lens]], its football (soccer) club
*[[Lens, Belgium]]
*[[Lens, Valais]], Switzerland
==Names of people==
*[[Louis Lens]], Flemish rose breeder
*[[Nicholas Lens]], Belgian composer
==Acronyms==
*[[Laser Engineered Net Shaping]], a rapid prototyping technology capable of building fully-dense metal parts
{{disambig}}
[[ar:عدسة]]
[[cs:Čočka]]
[[de:Lens]]
[[es:Lente (desambiguación)]]
[[eo:Lenso]]
[[fr:Lentille]]
[[ko:렌즈 (동음이의)]]
[[hr:Leća]]
[[nl:Lens]]
[[no:Linse]]
[[ru:Линза (значения)]]
[[sk:Šošovka]]
[[th:เลนส์]]
[[tr:Lens]]
[[uk:Лінза (значення)]]
[[vo:Lens]]
[[it:Lens]]
[[pt:Lens (desambiguação)]]