This question has been asked before, here and on stagecraft, lighting
network and pro sound/lighting. There was some good concepts presented that might work really well in addition to manufactured lighting equipment designed to supplement this.
UV
gel has also been discussed on the four websites in the past. It don't exist. You can come close to simulating it's effects for
stage but remember that a
filament based lamp is extremely low in UV-A output. Thus any
gel placed in front of that light will
block out not only visible light but also from what's left of the UV-A, very little will be transmitted. In other words, from say a 10Kw lighting
fixture, you might get about as much UV light as a 9v compact
fluorescent black light. Rough figures here.
Remember also that black light is something that's not visible. The black light blue
fluorescent lamps you buy at a hardware store are both UV and blue in color spectrum. This as opposed to a true black light lamp also available that won't have any visible light coming out of it other than what phosphors or is seen by the camera. The 75w
incandescent "party
bulb" that's a black light
bulb is color corrected to simulate black light also but in fact has very little UV output.
This given UV output and not IR output. I'm not sure of any lamps that specialize in the IR spectrum other than a space heater. IR is heat for the most part not light. Thus any lamp produces heat.
Any help?