Ray mapping approach in double freeform surface design for collimated beam shaping beyond the paraxial approximation · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/1701.03076/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTRay mapping approach in double freeform surface design for collimated beam shaping beyond the paraxial approximation — mentioned by djmipshttps://news.ycombinator.com/item?id=20399547urn:hackerpapers:mention:1701.03076:20399547Wed, 10 Jul 2019 06:18:49 GMT<p>I voted for your comment because it&#x27;s interesting but I don&#x27;t agree that the example you linked is the same problem as solved in this post. But that is an opinion because I&#x27;m not informed enough to know for sure. Meanwhile I did dig up a paper related to mapping radiance with a shaped lens like the artist you linked. It&#x27;s a cool topic! https://arxiv.org/pdf/1701.03076.pdf</p><p><a href="https://hackerpaper.kaipfister.de/p/1701.03076/">Paper and discussion history</a>. A mention is not an endorsement.</p>physics.optics