Have you seen Purple/UV Street Lights around you?
(www.bitchute.com)
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Yes. White light LEDs use the same principle as fluorescent tubes; all fluorescent tubes are UV emitters inside and white phosphor outside.
The white light phosphor for LEDs can vary in emitted wavelengths by using slightly different compounds plus dye filters, but all the phosphors put out narrow bands unlike tungsten incandescents; hot tungsten puts out a broad spectrum somewhat like nature sunlight which our eyes like. LEDs suck due to the narrow wavelength range output.
UV LEDs are bad for eye health and they will damage the cornea and lens. Anyone working where these are used will get cataracts earlier in life. Beware.