click "it worked" i this is what you need.
open the bulb in solidworks
and chnge the scene to pitch black.
and press final render
this is what you get now directly.
now go to options in the "render tools" tab
and select bloom this will give you the dispersion of light in the final render only
the initial values will be 100 and 5
change the values as u wish and select final render to see the bloom option this is what you get for values 100 and 20.
this is what you get for another scene and another set of values