What is the difference between LED and incandescent blacklight bulbs??

LED blacklights and incandescent blacklight bulbs are different in terms of UV output.

Incandescent blacklight bulbs typically emit ultraviolet (UV-A) light in the range of 320 to 400 nanometers, which is visible as a purplish-blue light. This type of light is known as “blacklight” due to the fact that it causes many white and fluorescent materials to glow or fluoresce.
LED blacklights, on the other hand, emit a more intense and focused UV-A light in the range of 365 to 385 nanometers. This makes LED blacklights a more efficient and effective option for illuminating UV-reactive materials. LED blacklights also have the advantage of being more energy-efficient and long-lasting compared to incandescent blacklight bulbs.

In conclusion, while both LED and incandescent blacklights emit UV-A light, LED blacklights are typically more efficient and effective due to the higher UV output and more focused wavelength.