- TL;DR Summary
- I need ink that reacts through an IR lens
I’m making an eyepiece that can see hidden messages, and I need to know an ink that you’ll be able to see through the IR lens.
Just so you know, I mean looking through the actual lens, not through the cameraSome type of invisible inks in general:
and for IR in particular
You can also find more stuff via a Google search.
Is this from a game? Physically, the images already show a huge error in the concept.I'm making a prototype of this, also what if there's light shining through the lensView attachment 276950View attachment 276951
Correction: Most people can't.You can't see IR light no matter what kind of lens you use.
I always thought that was due to the LED producing a distribution of frequencies?Correction: Most people can't.
Generally, humans can see wavelengths down to about 750nm.
My son can reliably see the light from a TV remote - about 940nm - well into the near IR.
Yep. My son has a superpower.
So, the solution for the OP is ensure he is young of age.
Perhaps, but that distribution is certainly entirely below my ability to detect.I always thought that was due to the LED producing a distribution of frequencies?