... not to mention that it's practically screwed into his skull so it stays in one place.
The "wander lamps" are imagery projectors.
The alternate from BAE uses optical waveguide technology (like the Thales, nee Gentex Scorpion) with flat combiners in front of the pilot's eyes. But the tech did not exist when the JSF program started. Nor did the rather similar digital HUD technology that makes a HUD compatible with a panoramic display by eliminating the huge optical package underneath a conventional HUD.