Lens

- A device for focusing light rays onto a CCD or film.
Found on http://www.encyclo.co.uk/local/21026

Lens

(Digital cameras and photo printers) Transparent glass or plastic that has been formed and polished to form a certain shape, usually spherical. When a beam of light reaches the area between the air and the lens, a part of this light is always reflected. The remaining light passes into the lens and alters its propagation direction, i.e. the light i...
Found on http://www.encyclo.co.uk/local/20472

lens

(from the article `ocean`) Over many decades this process forms a deep lens of warm, saline North Atlantic Central Water. The shape of the lens of water is distorted by other ...
Found on http://www.britannica.com/eb/a-z/l/34

lens

(lenz) A transparent refractive organ of the eye positioned posterior to the pupil and iris.
Found on http://www.mhhe.com/biosci/abio/glossary.mhtml

lens

(lenz) a piece of glass or other transparent material so shaped as to converge or scatter light rays. See also glasses Lenses: (A–F), Spherical lenses: (A), biconvex; (B), biconcave; (C), planoconvex; (D), planoconcave; (E), concavoconvex, periscopic convex, converging meniscus; (F...
Found on http://www.encyclo.co.uk/local/21001

lens

[n] - genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils 2. [n] - biconvex transparent body situated behind the iris in the eye 3. [n] - electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons 4. [n] - a trans...
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Lens

• (n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, th...
Found on http://thinkexist.com/dictionary/meaning/lens/

lens

<physics> A transparent optical element, so constructed that it serves to change the degree of convergence or divergence of the transmitted rays. ... (05 Aug 1998) ...
Found on http://www.encyclo.co.uk/local/20973

lens

noun electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
Found on http://wordnetweb.princeton.edu/perl/webwn?s=lens

lens

lense noun a transparent optical device used to converge or diverge transmitted light and to form images
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lens

(eye) Anatomy of the lens and surrounding structures A transparent structure located just behind the pupil of the vertebrate eye. It lies in the aqueous humor, by which it is oxygenated and nourished, and is attached by suspensory ligaments to the ciliary body. The le...
Found on http://www.daviddarling.info/encyclopedia/L/lens_eye.html

Lens

[anatomy] The crystalline lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of...
Found on http://en.wikipedia.org/wiki/Lens_(anatomy)

Lens

[genus] Lens is a genus of the legume family mostly known for its edible seeds, which are referred to as lentils. Lens contains four species of small, erect or climbing herbs with pinnate leaves, small inconspicuous white flowers, and small flattened pods. The lentil most commonly eaten is the seed of Lens culinaris. ...
Found on http://en.wikipedia.org/wiki/Lens_(genus)

Lens

[geology] 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. Adjective: `lenticular`. A lens can also refer to an irregular shaped formation consisting of a porous, permeable sedimentary deposit surrounded by impermeable rock. ...
Found on http://en.wikipedia.org/wiki/Lens_(geology)

Lens

[geometry] In geometry, a lens is a biconvex (convex-convex) shape comprising two circular arcs, joined at their endpoints. If the arcs have equal radii, it is called a symmetric lens, otherwise is an asymmetric lens. A concave-convex shape is called a lune. The vesica piscis is one form of a symmetrical lens; the term is also used for lens...
Found on http://en.wikipedia.org/wiki/Lens_(geometry)

Lens

[hydrology] In hydrology a lens is a convex layer of fresh groundwater that floats on top of denser saltwater. It arises when rainwater seeps down through a soil surface and then gathers over a layer of seawater at or down to about five feet below sealevel. Freshwater lenses are often found on small coral or limestone islands and atolls, wh...
Found on http://en.wikipedia.org/wiki/Lens_(hydrology)

lens

Click images to enlargeIn optics, a piece of a transparent material, such as glass, with two polished surfaces – one concave or convex, and the other plane, concave, or convex – that modifies rays of light. A convex lens brings rays of light together; a concave lens makes the rays diverge. Lenses are essenti...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0001983.html

Lens

Lens (lĕnz) noun ; plural Lenses (-ĕz). [ Latin lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Confer Lentil .] (Opt.) A piece of glass, or other transparent substance, ground with two opposite regu...
Found on http://www.encyclo.co.uk/webster/L/29

lens

A clear disk that focuses light, as in a camera or microscope. In the eye, the lens is a clear, curved structure at the front of the eye behind the pupil. It focuses light rays that enter the eye through the pupil, making an image on the retina (light-sensitive layers of nerve tissue at the back of the eye).
Found on http://www.cancer.gov/dictionary?expand=L

lens

A clear optical element that produces an image by refraction. A convex lens makes light rays converge at a focal point, while a concave lens causes rays to diverge. A thinner lens has a longer focal length than a thicker one, and is also easier to make and suffers less from chromatic aberration and ...
Found on http://www.daviddarling.info/encyclopedia/L/lens.html

Lens

A lens is a transparent substance, usually glass or plastic, so formed that rays of light passing through it are made to change their directlon, and to magnify or diminish objects at a certain distance. Lenses are double convex, or convex on both sides; double-concave, or concave on both sides; plano-convex, or plano-concave, that is, with one side...
Found on http://www.probertencyclopaedia.com/browse/GL.HTM

Lens

A lens is an optical component whos surface curvature and refractive index are designed such that the direction of light incident upon it is controlled.Formulae exist for thin lens approximations to determine focal lengths etc.For an object at distance d whos image is formed at d'
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Lens

A metallic disk with one or more holes to which an electrical potential can be applied. A lens can be used to accelerate or decelerate ions as the ions approach the lens and to focus an ion beam as the beam passes through the lens.
Found on http://www.kcl.ac.uk/research/facilities/mspec/instr/glossary2

Lens

A optical device made of glass or other transparent material that forms images by bending and focusing rays of light. A lens made of a single piece of glass cannot produce very sharp or exact images, so camera lenses are made up of a number of glass 'elements' that cancel out each other's weakness and work together to give a s...
Found on http://www.encyclo.co.uk/local/21048

Lens

A optical device made of glass or other transparent material that forms images by bending and focusing rays of light. A lens made of a single piece of glass cannot produce very sharp or exact images, so camera lenses are made up of a number of glass 'elements' that cancel out each other's weakness and work together to give a sharp true image. The s...
Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
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