I've been a fan of Mike Carey's Lucifer comic series, for its believable portrait of a fallen angel. The series spun off from Neil Gaiman's The Sandman, which established this incarnation of Lucifer Morningstar.
In short, Lucifer gets tired of the role given to him by God, so he abandons Hell and opens a piano bar on Earth called "Lux" (best in LA!). I know "lux" means "light", so this one is ok.
Now there's a new Lucifer series, set right after the previous run. In it, Lucifer returns to Earth and opens a bar called "Ex Lux":
I'd have missed him, had I not read the original series right before reading this one :D
What does "ex lux" mean? This website says "lightbringer", and I'd be inclined to believe it (because Lightbringer is Lucifer official title), had it not listed "machine translation" as its source.
I could try to scrape the barrel of my Latin knowledge, and suggest that it means "from light" - using "deus ex machina" as a reference point - but I don't dare.
Instead, I'm asking here: what does "ex lux" mean?