# Resolution for a lens from a diffraction standpoint

1. Apr 10, 2013

### rm_girl

1. The problem statement, all variables and given/known data
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.

2. Relevant equations

3. The attempt at a solution

2. Apr 10, 2013

### technician

do you know how diffraction depends on wavelength

3. Apr 10, 2013

### rm_girl

shorter wavelengths get diffracted at greater angles?

Last edited: Apr 10, 2013
4. Apr 10, 2013

### rm_girl

So would it be near-infrared because it has the longest wavelength, therefore less diffraction?

5. Apr 10, 2013

### technician

for a lens of a given SIZE you get less diffraction for a short wavelength !!!
Which has the shortest wavelength?

6. Apr 10, 2013

### rm_girl

Ultraviolet would have the shortest

7. Apr 10, 2013

### technician

That is correct so all other things being equal there is less diffraction for UV, visible and infra red in that order.

8. Apr 10, 2013

Thanks