The Texture Emission node allows any valid texture type to set the light intensity instead of temperature value, which is what the Blackbody Emission node does. If you wish to specify emission by Kelvin temperature, then use the Blackbody Emission node instead. 


Texture Emission is useful for many effects, such as a projector, a cinema screen/TV screen, signage, and so on. To see how to create the projector example, go to this section.


texture emission node set up