Weird cameras are just the best, aren’t they? And they don’t get much weirder than this. Researchers at Harvard University’s John A. Paulson School of Engineering and Applied Sciences (SEAS) have published a paper detailing a tiny camera that sees the world the way a shrimp and some insects see it. That is, in polarised light.
Polarisation is essentially the directions in which light waves travel. And this polarisation camera shows us those directions in a rainbow of colours, with the visible light removed. The technology’s been around for a while, although not at this sort of small scale. It opens up a lot of new applications for using such cameras.