I was thinking about how one can calculate the F-Number of compound lenses or lenses with really weird shapes. I think one can successfully do this with the Monte Carlo algorithm that was described on one of the other slides in this lecture. We can get an approximate for focal length by just running that algorithm for light sources from infinity. By definition, the focus is where rays from infinity converge. So we can just take an average of axial distance from the lens. This will give us an approximate of focal length which we can use to calculate the F-Number.
Boomaa23
@SudhanvaKulkarni123 that seems like it would work, however it may be simpler to just add these values as focal distances are additive (i.e. 1/f=1/f1+1/f2 for two compound lenses). For lenses with weird shapes I'm not as certain about this approach. Source: https://www.ncbi.nlm.nih.gov/books/NBK597385/
I was thinking about how one can calculate the F-Number of compound lenses or lenses with really weird shapes. I think one can successfully do this with the Monte Carlo algorithm that was described on one of the other slides in this lecture. We can get an approximate for focal length by just running that algorithm for light sources from infinity. By definition, the focus is where rays from infinity converge. So we can just take an average of axial distance from the lens. This will give us an approximate of focal length which we can use to calculate the F-Number.
@SudhanvaKulkarni123 that seems like it would work, however it may be simpler to just add these values as focal distances are additive (i.e. 1/f=1/f1+1/f2 for two compound lenses). For lenses with weird shapes I'm not as certain about this approach. Source: https://www.ncbi.nlm.nih.gov/books/NBK597385/