Yes Vray Lens effects - A few things to remember before using them.
. lens interaction is essential for getting the effect you are seeking - all lights look as they do due to obstacle/normalisation/flare/bloom interaction from eye or camera.
. Use a mask threshold or the whole image will be affected.
. Render to element only. (The option of both image and render element is pretty useless because your RGB has the effect baked in anyway)
.once your scene is setup select a low output/render settings, open the effects window and click ‘interactive’ The scene will render and you can then alter the lens effect in real-time to achieve the desired result.
Stick with the coil and use it as a meshlight, and then just punch up the power very high - Coils are very bright in reality!
also make the colour of the light a dark saturated orange/yellow, to achieve a more real-world colour falloff (your light is too unsaturated presently and looks more Fluorescent than incandescent).
Pull down your ambient light a little too in order to enhance the effect 