Is there any way to differentiate UV light from visible or IR light?

Question

I'm working on a small sensor system that responds to only UV light and I wanted to know that is there any way to differentiate between UV light and the rest of the spectrum like using lens if so then what kind of lens to be used etc. Kindly share your thoughts.

PhillS · Answer

Use a prism to disperse the light by wavelength, and then just put the sensor where the UV part of the spectrum falls, or physically block out the wavelengths that you don't want.

Semoi · Answer

Buy a bandpass filter, which transmits around 315nm. A bandpass filter is a "glass plate", which absorb "all" wavelength except some within a certain wavelength range. Look at the transmission spectrum of the bandpass filer and check whether or not this is acceptable.

Answered by Semoi on February 20, 2021

Is there any way to differentiate UV light from visible or IR light?

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