>"In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to the radii of curvature of the lens surfaces. Lenses whose thickness is not negligible are sometimes called thick lenses.
The thin lens approximation ignores optical effects due to the thickness of lenses and simplifies ray tracing calculations."
Which makes me wonder if there's a link between Fourier Transformations and Ray Tracing, and if so, how does it express itself?
Although, that's probably going seriously off-topic for this HN article! <g>
Also (since I didn't know what a "thin lens" was prior to reading this (I never studied Optics)) I Googled it, and found the Wikipedia page for it:
https://en.wikipedia.org/wiki/Thin_lens
>"In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to the radii of curvature of the lens surfaces. Lenses whose thickness is not negligible are sometimes called thick lenses.
The thin lens approximation ignores optical effects due to the thickness of lenses and simplifies ray tracing calculations."
Which makes me wonder if there's a link between Fourier Transformations and Ray Tracing, and if so, how does it express itself?
Although, that's probably going seriously off-topic for this HN article! <g>
Anyway, thanks again for the link/info!