Comment by ForOldHack Comment by ForOldHack 14 hours ago 1 reply Copy Link View on Hacker News You could use a freznell lens like "Brazil."
Copy Link genpfault 7 hours ago Collapse Comment - > freznellFresnel[1]?[1]: https://en.wikipedia.org/wiki/Fresnel_lens Reply View | 0 replies
> freznell
Fresnel[1]?
[1]: https://en.wikipedia.org/wiki/Fresnel_lens