Resolution for a lens from a diffraction standpoint

  • Thread starter rm_girl
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  • #1
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Homework Statement


A lens is designed to work in the visible, near-infrared, and near-ultraviolet. The best resolution of this lens from a diffraction standpoint is

Options:
a.) the same for all wavelengths.
b.) in the near-ultraviolet.
c.) indeterminate.
d.) in the near-infrared.
e.) in the visible.


Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
1,506
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do you know how diffraction depends on wavelength
 
  • #3
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shorter wavelengths get diffracted at greater angles?
 
Last edited:
  • #4
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So would it be near-infrared because it has the longest wavelength, therefore less diffraction?
 
  • #5
1,506
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for a lens of a given SIZE you get less diffraction for a short wavelength !!!
think about it
Which has the shortest wavelength?
 
  • #6
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Ultraviolet would have the shortest
 
  • #7
1,506
18
That is correct so all other things being equal there is less diffraction for UV, visible and infra red in that order.
 
  • #8
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Thanks
 

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