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About spatial resolution

  1. Apr 23, 2016 #1
    1. The problem statement, all variables and given/known data
    擷取1.PNG

    2. Relevant equations
    θmin=1.22λ/D

    3. The attempt at a solution
    (a)θmin=1.22λ/D
    (b)θs=1.22(600nm)/30mm=24.4μm but what is spatial resolution and how to calculate it??
     
  2. jcsd
  3. Apr 23, 2016 #2

    SammyS

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    That answer should be in units appropriate for an angle, certainly not μm .
     
  4. Apr 23, 2016 #3

    blue_leaf77

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    It's related to the angular resolution. You can think of the spatial resolution as the arc length of a circle subtended by the angle of angular resolution.
     
  5. Apr 23, 2016 #4
    sor, it is μrad
     
  6. Apr 23, 2016 #5

    SammyS

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    Yes.
     
  7. Apr 23, 2016 #6
    s=rθ, so what is r is this question?object distance? focal length?image distance?
     
  8. Apr 23, 2016 #7

    blue_leaf77

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    About the circle I was talking about, you can assume it to be centered at the center of the lens and since your image is located at the focal plane, the arc length of interest must touch the focal plane. What will r be?
     
  9. Apr 23, 2016 #8
    Focal lenght?
     
  10. Apr 23, 2016 #9

    SammyS

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    Yes.
     
  11. Apr 23, 2016 #10
    Thank
     
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