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A comment on Fluorite lenses: Corrective capabilities beyond ordinary optical glass. Parent comment

Re:Fluorite lenses: Corrective capabilities beyond ordinary ... by Micanthus on Wednesday January 17, 2024 @03:12AM (#39024792)
> a lens is a Fourier transformer. Of a sort.

Can you expand on that? Or have some reading for that?

I guess it makes sense, light is a wave and anything even vaguely to do with waves seems to end up with Fourier transforms, but still I'm curious about the details

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Re:Fluorite lenses: Corrective capabilities beyond ordinary ... by infogulch on Wednesday January 17, 2024 @03:28AM (#39024916)
How about a practical demonstration of optical Fourier transforms?

https://www.youtube.com/watch?v=Y9FZ4igNxNA

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