And today I managed to make it almost perfect.
I'm quite happy with the light reflections up and down and the cone is very similar to the real one... I added a rectangular box inside the lamp to split the top and bottom lights, so that the light cone is uniform.
Attached a picture took in the moorning and the result with q4 settings.
https://photos.google.com/share/AF1QipMI34bHa...4UGdpeHBkb1hPSHJqNGRfdF9n
I think I'll copy okh glow effect (if you don't mind it!) and then i'm happy with that!
I used 18 light sources (but I think 6-7 of them can be removed after setting the glow effect) and 5 up and 5 down are for the correct cone and light level, so if someone want so save money on lights, i can be done with a couple up and a couple down with similar results...
https://drive.google.com/open?id=1-FLoUQ01g6iiMOHjnQu4igIwLihJ4dKN
