Difference between revisions of "Lens"

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(Created page with 'File:lighterstill.jpgright|frame ==Origin== Special use of Latin lēns a lentil (from its shape) *[http://en.wikipedia.org/wiki/17th_cen...')
 
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==Origin==
 
==Origin==
 
Special use of [[Latin]] lēns a lentil (from its shape)
 
Special use of [[Latin]] lēns a lentil (from its shape)
*[http://en.wikipedia.org/wiki/17th_century 1693]
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*[https://en.wikipedia.org/wiki/17th_century 1693]
 
==Definitions==
 
==Definitions==
 
*1. A piece of [[glass]], or other [[transparent]] substance, with two curved [[surfaces]], or one plane and one curved surface, serving to cause regular [[convergence]] or divergence of the [[rays]] of [[light]] passing through it.
 
*1. A piece of [[glass]], or other [[transparent]] substance, with two curved [[surfaces]], or one plane and one curved surface, serving to cause regular [[convergence]] or divergence of the [[rays]] of [[light]] passing through it.
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*3. ''[[Geology]]'' . a body of [[rock]] or ore that is thick in the middle and thinner toward the edges, similar in shape to a biconvex lens.  
 
*3. ''[[Geology]]'' . a body of [[rock]] or ore that is thick in the middle and thinner toward the edges, similar in shape to a biconvex lens.  
 
==Description==
 
==Description==
A '''lens''' is an [[optical]] device with [[perfect]] or approximate axial [[symmetry]] which [[transmits]] and [[refracts]] [[light]], converging or diverging the beam. A simple lens consists of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple [[elements]] allows more optical aberrations to be corrected than is possible with a single element. Lenses are typically made of [[glass]] or [[transparent]] plastic. Elements which refract [[electromagnetic]] [[radiation]] outside the visual [[spectrum]] are also called lenses: for instance, a [http://en.wikipedia.org/wiki/Microwave microwave] lens can be made from [http://en.wikipedia.org/wiki/Paraffin_wax paraffin wax].[http://en.wikipedia.org/wiki/Lens_%28optics%29]
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A '''lens''' is an [[optical]] device with [[perfect]] or approximate axial [[symmetry]] which [[transmits]] and [[refracts]] [[light]], converging or diverging the beam. A simple lens consists of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple [[elements]] allows more optical aberrations to be corrected than is possible with a single element. Lenses are typically made of [[glass]] or [[transparent]] plastic. Elements which refract [[electromagnetic]] [[radiation]] outside the visual [[spectrum]] are also called lenses: for instance, a [https://en.wikipedia.org/wiki/Microwave microwave] lens can be made from [https://en.wikipedia.org/wiki/Paraffin_wax paraffin wax].[https://en.wikipedia.org/wiki/Lens_%28optics%29]
  
 
[[Category: Physics]]
 
[[Category: Physics]]

Latest revision as of 01:20, 13 December 2020

Lighterstill.jpg

Lens and wavefronts.gif

Origin

Special use of Latin lēns a lentil (from its shape)

Definitions

Description

A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element. Lenses are typically made of glass or transparent plastic. Elements which refract electromagnetic radiation outside the visual spectrum are also called lenses: for instance, a microwave lens can be made from paraffin wax.[1]