i think inde is not appropriate here, and that e/ex is better, or perhaps a/ab - someone wiht greater skill and knowledge will have to comment on this. I suppose the nice thing about a/ab could be that it allows for an ambiguous interpretation as to whether the effusio comes 'out of' or is occassioned 'by' the lantern/light.
For lantern/light you have a number of options. The best, I think, is luminare, -is. This is neo-latin, but then again, there weren't many cinemas around in Cicero's time. If you want a more classical term then either lumen, -is , lampas, -dis or lanterna, -ae could be suitable.
Effusio seems good to me.
So all up:
1. a/e luminare effusio.
2. a/e lumine effusio.
3. a/e lampade effusio.
4. a/e lanterna effusio.
Personally i prefer the first option for your purposes, and would probably use 'a' rather than 'e'.
“Cum ego verbo utar,” Humpty Dumpty dixit voce contempta, “indicat illud quod optem – nec plus nec minus.”
“Est tamen rogatio” dixit Alice, “an efficere verba tot res indicare possis.”
“Rogatio est, “Humpty Dumpty responsit, “quae fiat magister – id cunctum est.”