Invisible light? You mean this?
"Exploring invisible light
At either end of the rainbow there is light we can't see. Below the red end is near infrared light, shorter in wavelength than the infrared we feel as heat. Above the violet end of the rainbow is near ultraviolet, longer in wavelength than the ultraviolet light that causes sunburn."
I think you have it backwards. Right now, most LED fixtures contain no UV or infrared light.
U.S. Department of Energy - Energy Efficiency and Renewable Energy
Solid-State Lighting
Comparison of Power Conversion of White Light Sources
All light sources convert electric power into radiant energy and heat in various proportions. Incandescent lamps emit primarily infrared (IR), with a small amount of visible light. Fluorescent and metal halide sources convert a higher proportion of the energy into visible light, but also emit IR, ultraviolet (UV), and heat. LEDs generate little or no IR or UV, but convert only 15%-25% of the power into visible light; the remainder is converted to heat that must be conducted from the LED die to the underlying circuit board and heat sinks, housings, or luminaire frame elements. The table below shows the approximate proportions in which each watt of input power is converted to heat and radiant energy (including visible light) for various white light sources.
Power Conversion for "White" Light Sources Incandescent†
(60W) Fluorescent†
(Typical linear CW) Metal Halide‡ LED*
Visible Light 8% 21% 27% 15-25%
IR 73% 37% 17% ~0%
UV 0% 0% 19% 0%
Total Radiant Energy 81% 58% 63% 15-25%
Heat
(Conduction + Convection) 19% 42% 37% 75-85%
Total 100% 100% 100% 100%
† IESNA Handbook ‡ Osram Sylvania