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lens meaning

[ lenz ] Pronunciation:   "lens" in a sentence
  • Noun: lens  lenz
    1. A transparent optical device used to converge or diverge transmitted light and to form images
      - lense [non-standard], lens system 
    2. (metaphor) a channel through which something can be seen or understood
      "the writer is the lens through which history can be seen" 
    3. Biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina
      - crystalline lens, lens of the eye 
    4. Electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
      - electron lens
    Verb: lens  lenz
    1. Cause light to bend, as with a lens
      "the glass lensed the light"
    Noun: Lens
    1. Genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils
      - genus Lens

    Derived forms: lensed, lensing

    Type of: channel, communication channel, electronic equipment, line, optical device, organ, rosid dicot genus

    Part of: eye, oculus, optic, optical instrument, Papilionoideae, subfamily Papilionoideae

    Encyclopedia: Lens, France Lens, Ontario Lens Lens, Belgium Lens, Valais Lens, crystalline Lens, Pas-de-Calais Lens, Switzerland


  • [Architecture]
    1.

    A glass or plastic having smooth, regular opposite surfaces, shaped to control transmitted light by refraction; used in a lighting unit to focus, disperse, or collimate light rays.

    2.

    A combination of such elements.


  • [Electronics]
    1. A usually circular piece of transparent material with one or both surfaces curved in cross section, used (through its refractive properties) to focus or spread rays that pass through it. Lenses for visible light must be transparent, but those for other radiation, such as radio waves, need not transmit light. Also see ANTENNA LENS.
    2. In a cathode-ray tube, one or more high-voltage electrodes for focusing an electron beam to a fine point on the screen.

  • [Medicine]
    also lense n
    1 : a curved piece of glass or plastic used singly or combined in eyeglasses or an optical instrument (as a microscope) for forming an image
    2 : a device for directing or focusing radiation other than light (as sound waves, radio microwaves, or electrons)
    3 : a highly transparent biconvex lens-shaped or nearly spherical body in the eye that focuses light rays entering the eye typically onto the retina, lies immediately behind the pupil, is made up of slender curved rod-shaped ectodermal cells in concentric lamellae surrounded by a tenuous mesoblastic capsule, and alters its focal length by becoming more or less spherical in response to the action of the ciliary muscle on a peripheral suspensory ligament — lensed adj — lens·less adj

Examples

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  1. she heard the tinkle of the broken lens.
  2. fit smoked plastic lenses in spectacles.
  3. displacement of the lens is not uncommon.
  4. these sandstone bodies form elongate lenses.
  5. light is condensed by means of lenses.

Related Words

  1. lennon meaning
  2. lennox robinson meaning
  3. lennox-gastaut syndrome meaning
  4. leno meaning
  5. lenocinium meaning
  6. lens antenna meaning
  7. lens cap meaning
  8. lens capsule meaning
  9. lens cortex meaning
  10. lens cover meaning
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