This might be up in the realm of LeForgeron, TOK, Bill Pokorny, etc:

https://mattferraro.dev/posts/caustics-engineering

This was an entry in the 2021 Summer Of Maths Exposition run by Grant of
3Blue1Brown.

https://www.youtube.com/watch?v=F3Qixy-r_rQ

Something to think about - it would make a really cool macro, where a user could
plug in the filename of an image, and get out a caustic lens!

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