Refraction through a thin lens

Discussion in 'Physics' started by logearav, Oct 14, 2011.

  1. logearav

    Thread Starter Member

    Aug 19, 2011
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    A lens is a transparent refracting medium bounded by two spherical surfaces.R1 and R2 are radii of two surfaces.

    Will the Radii R1 and R2 will be same or different ?

    I hope that they are same, otherwise there wont be symmetry. Still doubts lingers. Revered members can help.
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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  3. davebee

    Well-Known Member

    Oct 22, 2008
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    The radii may be the same or they may be different.

    A common variant of lens used in telescope eyepieces has one flat surface and one curved surface.

    There is no need for opposite sides of a lens to be symmetrical.
     
  4. tgotwalt1158

    Member

    Feb 28, 2011
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    It depends upon the use of the lens. There are several ways to remedy the faults of lenses viz. aberration, astigmatism, chromatic aberration etc, which may be corrected by designing several lenses one after another, and having a combination of spehrical and plano surfaces.
     
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