Come to think about it...
For these helmets to work, don't you need a; strong enough power, b; a (as you say) a film/sensor on the other, otherwise.....wouldn't be useless otherwise?
If you're gonna use it to see through your fighter, doesn't it mean that you'll need the film/sensor on the outside of the fuselage, for it to work?
If so, how does this (or these) film/sensors affect the stealth etc., etc..?
Somehow, I think that someone has read too many of those Sci Fi comics....