Lens can refer to:
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. A lens is an optical device with perfect or approximate Axial symmetry which transmits and refracts Light, converging or diverging The lens is a transparent biconvex structure in the Eye that along with the Cornea, helps to Refract Light to be focused A corrective lens is a lens worn in front of the Eye, mainly used to treat Myopia, Hyperopia, astigmatism, and adjustable focus A photographic lens (also known as objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with See also Category:Photographic lenses
- Sunglass lenses, which are light-attenuating elements
- See also: 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
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. Sunglasses or sun glasses are a visual aid variously termed Spectacles or Glasses, which feature lenses that are coloured or darkened to prevent strong A gravitational lens is formed when the light from a very distant bright source (such as a Quasar) is "bent" around a massive object (such as a cluster of An electrostatic lens is a device that assists in the transport of Electrons emitted from a sample to an Electron analyzer, analogous to the way an optical lens An explosive lens —as used for example in Nuclear weapons €”is a highly specialized explosive charge The lentil or daal or pulse ( Lens culinaris) is a bushy Annual plant of the legume family grown for its lens-shaped Seeds
- 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 point of view
- a fictional alien device in E. The genus Lens of the Legume family Fabaceae contains four species of small erect or climbing Herbs with pinnate leaves and small inconspicuous In Geometry, a lens is a Convex Shape comprising two circular arcs joined at their endpoints In Geology a lens is a body of Ore or rock or a deposit that is thick in the middle and thin at the edges resembling a convex lens in cross-section Perspective in theory of Cognition is the choice of a context or a Reference (or the result of this choice from which to Sense, Categorize 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, Pas-de-Calais, a commune in that arrondissement
- 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
Dictionary
lens
-noun
- An object, usually made of glass, that focuses or defocuses the light that passes through it.
- A device which focuses or defocuses electron beams.
- (geometry) A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
- (biology) A genus of the legume family; its bean.
- (anatomy) The transparent crystalline structure in the eye.
-verb
- (transitive) To film, shoot.
- (geology) To become thinner towards the edges.
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