arduino uno lcd frequency mirror?

Although in theory its possible the practice would take a lot of work above and beyond just adding emitter detectors in the IR range.

The output from an LCD "may" work but its doubtful you would get any sort of distance out of it as it emits colours at a completely different wavelength to the IR diodes. and may not be able to provide a focused enough band.

If you need any more info just google "IR wavelength" there is a whole gamut of useful info out there.

IR and UV are either side of the "visible" spectrum

BTW you know the is the ZERO section dont you ?