- #1
excalibur313
- 18
- 0
Hi Everyone,
I am trying to find a formula that relates numerical aperture of a lens to the beam diameter that it would collimate a point source from. I could also do this from the effective focal length if that is easier.
Thanks for your help!
I am trying to find a formula that relates numerical aperture of a lens to the beam diameter that it would collimate a point source from. I could also do this from the effective focal length if that is easier.
Thanks for your help!