> Humans cannot perceive infrared light due to the physical thermodynamic properties of photon-detecting opsins.

Seeing near-NIR without pointing a laser at your eye is interesting, but "cannot perceive"?

It's dim, yes. But there are perception reports well beyond 1000 nm (like 1.3 or 1.5 um). People see NIR ophthalmoscopes. I fuzzily recall a DIY attempt to wear a NIR bandpass filter, to make bright day into dark-adapted near-NIR night. And two-photon sensitivity[1] can level off the single-photon sensitivity log curve above 900 nm.

[1] https://www.sciencedirect.com/science/article/pii/S004269892...