'LENS' definitions:
Definition of 'lens'
From: WordNet
noun
A transparent optical device used to converge or diverge transmitted light and to form images [syn: lens, lense, lens system]
noun
Genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils [syn: Lens, genus Lens]
noun
(metaphor) a channel through which something can be seen or understood; "the writer is the lens through which history can be seen"
noun
Biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina [syn: lens, crystalline lens, lens of the eye]
noun
Electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons [syn: lens, electron lens]
Definition of 'Lens'
From: GCIDE
- Lens \Lens\ (l[e^]nz), n.; pl. Lenses (-[e^]z). [L. lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Cf. Lentil.] (Opt.) 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, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. [1913 Webster] Lenses [1913 Webster]
- Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus. [1913 Webster]
- Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other.
- Crystalline lens. (Anat.) See Eye.
- Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; -- so called from the inventor.
- Multiplying lens or Multiplying glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied.
- Polyzonal lens. See Polyzonal. [1913 Webster]
Synonyms of 'lens'
From: Moby Thesaurus
- baby blues,
- banjo eyes,
- bright eyes,
- clear eyes,
- cornea,
- eye,
- eyeball,
- eyelid,
- goggle eyes,
- iris,
- lid,
- naked eye,
- nictitating membrane,
- oculus,
- optic,
- optic nerve,
- orb,
- organ of vision,
- peeper,
- popeyes,
- pupil,
- retina,
- saucer eyes,
- sclera,
- starry orbs,
- unaided eye,
- visual organ
Acronyms for 'LENS'
From: V.E.R.A.
- Laser Engineered Net-Shaping
Words containing 'LENS'
- len,
- Collimating lens,
- Crossed lens,
- Crystalline lens,
- Cylindrical lens,
- Echelon lens,
- Ervum Lens,
- Field lens,
- Fresnel lens,
- Immersion lens,
- Multiplying lens,
- Pole of a lens,
- Polyzonal lens,
- Spot lens,
- Telephoto lens,
- achromatic lens,
- anastigmatic lens,
- camera lens,
- closeup lens,
- compound lens,
- concave lens,
- contact lens,
- converging lens,
- convex lens,
- crown lens,
- diverging lens,
- electron lens,
- fisheye lens,
- genus lens,
- intraocular lens,
- lens cap,
- lens capsule,
- lens cortex,
- lens cover,
- lens culinaris,
- lens hood,
- lens implant,
- lens maker,
- lens nucleus,
- lens of the eye,
- lens system,
- macro lens,
- object lens,
- objective lens,
- optical lens,
- portrait lens,
- spotted lens,
- telephotographic lens,
- zoom lens,
- accommodating lens implant,
- interocular lens implant,
- monofocal lens implant,
- multifocal lens implant,
- wide-angle lens,
- Focal distance or length of a lens or mirror