Clear chemical or material that will absorb or deflect IR?

AI Thread Summary
The discussion centers on finding a material that can absorb or deflect infrared light in the 890 - 910 nm range to prevent reflection back to its source. The user seeks a clear or semi-clear substance to coat or cover a target object, which is crucial for accurate distance measurement using IR pulses. Previous threads were referenced, but they did not provide satisfactory answers. The user clarified that the IR is directed towards a metal or plastic object to measure distance based on pulse reflection. The goal is to find a suitable compound or material that effectively disrupts this measurement process.
Jirby
Messages
3
Reaction score
0
Hello All,

I'm curious if there is some chemical or clear / semi-clear material that will absorb or deflect infra red light in the 890 - 910 nm range.

IR absorption would be ideal, but deflection should work as well.
The idea is to prevent reflection of IR back to it's source.

I hope this isn't too vague/broad of a question.
Thanks,
 
Engineering news on Phys.org
Welcome to the PF. :smile:
Jirby said:
The idea is to prevent reflection of IR back to it's source.
Reflection off of what? What is the IR being directed toward?

Simple window glass generally does not pass IR wavelengths...
 
  • Like
Likes Jirby and russ_watters
Reflection off of what? What is the IR being directed toward?

Consider a stationary source emitting pulses of IR towards a metal or plastic object, with the intention of determining the distance between the source and target object.
In this case, distance is calculated by measuring the time it takes for a pulse to travel to the target and reflect back to the source.
The IR pulse would have a wavelength in the 890 - 910 nm range.
I'm wondering if there is an existing chemical or compound, with which one could coat the target object, or a material that could cover the target object that would absorb the incoming pulse or deflect it away from its source; effectively preventing the distance calculation.
Preferably this compound or material would be clear or at least mostly see-through.

 
anorlunda said:
Thank you for the links. I'd actually already looked at 2 of these before i posted, but they didn't have the answers I was looking for.
Perhaps I didn't sate my question with enough detail. I provided more info in a reply to Berkeman below.
Cheers!
 
Back
Top